Mrs
Kaoru Ueno
(Metal Technology Co. Ltd.)
06/12/2017, 09:00
At the previous international conference HIP ‘14 it was suggested that the HIP method for the fabrication of the radial plate segment, which is the structure for supporting the toroidal magnetic field coil of ITER, be used.
The purpose of this suggestion was to improve the material yield and reduce the time spent on the machining process.
In order to verify that a uniform HIP effect for a...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 09:25
Hot Isostatic Pressing (HIP) is a method to consolidate dry metal and ceramic powders by increasing the temperature up to the sintering threshold and applying high pressure, typically 15-30 ksi in an inert Argon atmosphere.
This work presents the results performed together with Quintus Technologies and Department of Energy’s Idaho Site contractors to significantly reduce the volume of dry...
Dr
Tomofumi Sakuragi
(Radioactive Waste Management Funding and Research Center)
06/12/2017, 09:50
Silver impregnated materials are widely used as an absorbent of radioactive iodine in the nuclear industry. A commercial fuel reprocessing facility of Japan will be working in shortly. The waste management for the spent alumina sorbent (AgA) to be disposed in deep underground is a challenge because iodine-129 has the extreme long-life and a mobile nature in aquifer systems. For the safety...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 11:00
Oral Presentation
Additive Manufacturing (or 3D-printing) is the newest technology to mass produce small to medium-size parts with high tolerances and quality for many industries, i.e. Automotive, Medical, Dental and Aerospace.
However, even after the final sintering residual pores exist within the material. To remove these pores, Hot Isostatic Pressing or HIP is the obvious choice. By applying a HIP step,...
Dr
Miren Aristizabal
(University of Birmingham)
06/12/2017, 11:35
Oral Presentation
Samples of gas-atomisedTi6Al4V powder have been HIPped after which they were cooled at different rates in the HIP and/or subsequently heat treated in order to obtain very different microstructures. Microstructural observations have been carried out using scanning and transmission electron microscopy. The samples were tested in tension and in fatigue in order to assess the influence of the...
Prof.
Eduard Hryha
(Chalmers University of Technology)
06/12/2017, 12:00
Oral Presentation
Metal powders are characterized by the large surface area that results in high surface reactivity of the powder. This is especially important in case of complex alloys containing elements with high sensitivity to oxygen (Cr, Mn, Si, V, Zr, etc.) such as tool steels, Ni-base super-alloys, stainless steels, etc. The residual surface oxides hinder the metallic bonding between the powder particles...
Mr
Fredrik Meurling
(Sandvik Materials Technology)
06/12/2017, 12:25
Oral Presentation
Oxygen control during powder manufacturing and handling is crucial when manufacturing HIPed parts. The influence of elevated oxygen content on mechanical properties is something that has been debated and investigated for many years. The general consensus in the industry is that oxygen has a very detrimental effect on the toughness of the material if present in excessive amounts.
The...
Dr
Dhriti Bhattacharyya
(ANSTO, Lucas Heights, NSW 2234, Australia)
06/12/2017, 14:00
The quality of additively manufactured metallic microlattice materials is reported to be dependent on process parameters. These fabricated structures have inherent defects such as micro-voids. The build angle of the part is likely to affect its microstructure and mechanical properties due to the stacking-layered-fused nature of the metal powder in Powder Bed Fusion (PBF) process, which is...
Mr
Martin Östlund
(Sandvik Materials Technology)
06/12/2017, 14:25
Oral Presentation
PM HIP 316L is an alloy that is of increased interest for nuclear applications since it´s recent ASME code case approval. Over the years comprehensive data and understanding of the properties and features have been collected and evaluated which will be summarised in this article. Since the early developments of the PM HIP technology it has been observed that PM HIP alloys generally exhibit...
Prof.
Makoto Nanko
(Nagaoka University of Technology)
06/12/2017, 14:50
Oral Presentation
Transparent polycrystalline alumina (TPA) ceramics have been used in optical devices such as optical windows and high efficiency lumps. They have been produced with sintering process with advanced fine alumina powder. Pulsed electric current sintering (PECS), which is also so-called spark plasma sintering (SPS), is useful for producing TPA ceramics. However, transparency of TPA ceramics...
Mr
Nils Wulbieter
(Chair of Materials Technology, Ruhr-Universität Bochum, Germany)
06/12/2017, 15:15
Oral Presentation
The possibility to combine the densification or compaction of steel parts with a heat treatment has evolved recently by the production of HIP-Units with a rapid quenching device. Since then several studies have been performed to assess the cooling speed and show possibilities to heat treat steels. It was shown before that several alloyed steel grades can be hardened with the method of...
Mr
Maheswaran Vattur Sundaram
(Chalmers University of Technology)
06/12/2017, 16:00
Oral Presentation
Water-atomised powder metallurgical (PM) steels offer cost-effective solutions for structural components and are typically processed through the ‘press and sinter’ route. Utilizing these steels for high performance applications requires further improvement of their mechanical performance. This requires increased density as compared to that achieved via the conventional uniaxial pressing and...
Mr
Benjamin Ruttert
(Ruhr-Universität Bochum)
06/12/2017, 16:25
Oral Presentation
Single crystal Ni-base Superalloys (SXs), used as blade materials, operate at temperatures close to their melting point and have to withstand mechanical and chemical degradation. Casting and extensive solution heat-treatments of such blades introduce porosity, which can only be reduced by hot isostatic pressing (HIP). Recent developments of a HIP unit with a quenching possibility allow...
Dr
Inigo Iturriza
(Ceit_IK4)
06/12/2017, 16:50
Oral Presentation
The increase in the operational temperature range of structural materials plays an important role in most demanding energy generation sources and in certain industrial processes since it enhances the efficiency and promotes a reduction of the environmental pollution. In this sense, oxide dispersion strengthened ferritic stainless steels (ODS FS) are candidate materials for structural...
Prof.
Liubov Magerramova
(Alexandrovna)
06/12/2017, 17:15
In order increasing the gas-dynamic and strength characteristics of the turbine wheel gas turbine engines and reducing their weight the bimetallic turbine blisk with shrouded blades was engineered. To connect the separately cast shrouded blades nickel superalloy with disc of heat-resistant alloy powder is suggested a method of hot isostatic pressing (HIP). The complexity of the problem of...
Mr
qing teng
(Huazhong University of Science and Technology)
06/12/2017, 18:00
In this work, diffusion bonding between Aluminum and Copper were successfully performed by hot isostatic pressing (HIP). In order to improve the strength of diffusion bonding joint, different thickness of pure Nickel foils was used as an intermediate layer. The microstructure of the interface between Aluminum and Copper was investigated using X-ray diffraction (XRD) technique, secondary...
Mr
Motoyasu Aoki
(Doshisha University)
06/12/2017, 18:00
Fabrication of diamond/SiC=75/25~50/50vol% composites have been tried using hot isostatic pressing at 1450°C under 196 MPa for 2 h from the mixtures of diamond and Si powders. The former consisted of bimodal particle sizes Ps of 69 and 9.2 µm, and the latter average Ps of 0.60 µm. They were mixed using an alumina mortar and pestle for 30 min in ethanol thoroughly. After drying, a small amount...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 18:00
MIM is an excellent process to produce smaller parts in large numbers for many industries, i.e. Automotive, Medical, Dental and Aerospace.
However, even after the final sintering residual pores exist within the material. To remove these pores, Hot Isostatic Pressing or HIP is the obvious choice. By applying a HIP step, pores will be eliminated and the density will increase to virtually 100%...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 18:00
Powder Metallurgy is a competitive method vs forgings and castings, when it comes to cost effectiveness manufacturing of complex parts or alloy systems prone to cracking during heat treatment.
By applying a Heat Treatment step in the HIP, due to the use of high pressure during the HT-step, it opens up new possibilities for to improve the strength, ductility and especially the fatigue...
Mr
Yi-wen ZHANG
(Central Iron and Steel Research Institute)
06/12/2017, 18:00
Dual-alloy turbine wheels produced by HIP diffusion bonding of vacuum investment cast blade rings of the cast superalloy K418B to preconsolidated powder metal hubs of the powder metallurgy(PM) superalloy FGH4091, which have the long cyclic lives characteristic of PM superalloys combined with the high creep strength and net-shape blades characteristic of cast superalloys. After machining, the...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 18:00
Hot Isostatic Pressing, HIP, is a method to apply a high pressure, typically 7,500 – 30,000 psi, at elevated temperatures, typically 700F up to 4000F, to eliminated voids in the material, like pores and gas bubbles, for increased material properties, i.e fatigue, tensile strength and elongation, and remove cracks and to reduce scrap.
Another advantage with HIP is the heat treatment that can...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
06/12/2017, 18:00
A common problem in the HIP industry is discoloring of parts with high Chromium content, like for Stainless Steel or Cobalt-Chromium-alloys that turns out green, for Ti-alloys that turns out blue or yellow, and for Cu-alloys that can have a black surface.
HIP users use different methods to avoid the coloring, like having different kind of getters, i.e. Titanium sponge. They wrap parts in...
Prof.
Hongxia Chen
(CHINA IRON & STEEL RESEARCH INSTITUTE GROUP)
06/12/2017, 18:00
Additive manufacturing technology has significant advantages in fabricating parts with complex shape, but the internal defects, such as residual stress, pores and microcracks, would result in fatal problems under certain circumstances. To meet the requirement of HIP treatment on additive manufactured parts, we studied the thermodynamic behavior of the gas medium under high temperature and high...
Mr
Katsumi WATANABE
(KOBE Steel, Ltd.)
07/12/2017, 08:00
The toll services have been increased in the recent Japanese HIP market. This trend leads to larger HIP equipment and shorter cycle times for productivity improvement. In addition, longer life cycle of pressure vessels are demanded to reduce the costs in conformance with the requirements of the relevant laws and regulations of Japan.
To meet such demands, the HIP equipment with a new rapid...
Mr
Maxime Pauwels
(Engineered Pressure Systems International NV), Mr
Pierre Colman
(Engineered Pressure Systems International NV)
07/12/2017, 08:35
Several aspects of load cooling in a production HIP unit have been widely tackled in the last 40 years.
The aim of this paper is to make an overview of the required cooling types applied to typical metallurgical applications available for industrial HIP users.
Both electronic controls and furnace & heat shield design have progressed in order to fulfill this demand, while considering the...
Dr
Victor Samarov
(LNT PM Inc.)
07/12/2017, 09:00
The paper analyzes 40 years of personal experience in developments of PM HIP processes along with the general tendencies of HIP evolution from a process developed in Battelle in 1956 to solve some specific problems in nuclear technology to a world-wide technology of building new materials and structures for critical applications
Fundamental physical and technological differences of HIP...
Prof.
michael loretto
(University of Birmingham UK)
07/12/2017, 09:25
It is widely accepted that Near Net Shape HIP (NNSHIP) has many advantages over alternative process-routes for the production of some types of components, but as with all process-routes there are disadvantages. This process-route now has competition from additive manufacturing, which is being used to produce components such as engine casings, but the various technologies of additive...
Mr
Magnus Ahlfors
(Quintus Technologies AB)
07/12/2017, 09:50
Hot Isostatic Pressing is widely used today to eliminate internal defects in components to achieve improved material properties like ductility and fatigue. With the modern HIP systems that Quintus Technologies can offer today there are possibilities to incorporate more processes steps into the HIP process. These process steps can be stress relief, solutionizing, quenching, ageing, tempering...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
07/12/2017, 10:15
The largest HIP unit operated in the world today has a hot zone diameter of 2.05 meters which is very big. However, there are even bigger components produced that would benefit from a HIP process but which can’t be HIP:ed today because of the size. These components could be large pump house castings for nuclear power plants or large circular components for aerospace engines for...
Mr
Martin Östlund
(Sandvik Materials Technology)
07/12/2017, 11:30
PM HIP is a widely applied manufacturing technology to produce thick walled and complex shaped duplex and super duplex stainless steel (DSS and SDSS) components for the petrochemical as well as the oil and gas industry. The PM HIP process offers the advantage of a fine grained microstructure which generates an increased resistance to HISC (Hydrogen Induced Stress Cracking) as well as higher...
Mr
Toyohito Shiokawa
(Metal Technology Co. Ltd.)
07/12/2017, 12:05
Material used for steam piping of power plants is exposed to high temperatures and high pressures over long periods. As a consequence, forged Grade 91 alloy steel is commonly chosen to meet these demands. However, complicated structures such as a valve body need to be machined from large forged blocks. As a result, the machining time is long and the material weight is heavy. Therefore, by...
Dr
Alberto Lapina
(MAN Diesel & Turbo)
07/12/2017, 12:30
The exhaust valve spindle is one of the most challenging components in the marine two-stroke diesel engine. It has to withstand high mechanical loads, thermal cycling, surface temperatures beyond 700 $^{\circ}$C, and molten salt induced corrosion.
Powder metallurgy gives the opportunity of improving the component using materials not applicable by welding or forging. Therefore exhaust valve...
Mr
Tomas Berglund
(Sandvik Powder Solutions)
07/12/2017, 14:30
Oral Presentation
The type of hard phase in combination with matrix material has a great influence on the wear properties of PM HIP Metal Matrix Composites. The hardness and toughness of the hard phase as well as its reaction with the matrix in combination with wear mechanism can cause significant differences in performance of the material. Three materials with the same matrix alloy but different carbide types...
Dr
ANDERS EKLUND
(QUINTUS TECHNOLOGIES AB)
07/12/2017, 14:55
Oral Presentation
Hot isostatic pressing (HIP) technology has been known for more than 50 years, and is considered today as being a standard production route for many applications. The HIP process applies high pressure (50-200 MPa) and high temperature (400-2,000°C) to the exterior surface of parts via an inert gas (e.g., argon or nitrogen). The elevated temperature and pressure cause sub-surface voids to be...
Mr
Maheswaran Vattur Sundaram
(Chalmers University of Technology)
07/12/2017, 15:20
Oral Presentation
Powder metallurgical materials usage in high performance applications is limited by the inherent porosity that contributes to the inferior properties as compared to the wrought material. Combination of powder metallurgical routes with HIP as a final processing step allows to reach fully dense material. In addition, recent development in HIP processes with integration of rapid cooling proved to...
Dr
Hamish Fraser
(The Ohio State University)
07/12/2017, 15:45
Oral Presentation
The advent and enthusiasm for additive manufacturing (AM) has increased significantly the use of titanium alloy powders. For most of the powder-based AM processing techniques, there is a requirement for the fine powders of narrow size range. Since most of the atomizing techniques produce a range of sizes, with a more or less Gaussian distribution, this means that after delivering powders for...
Prof.
Eduard Hryha
(Chalmers University of Technology)
07/12/2017, 16:30
Oral Presentation
Typically gas atomized powder grades are used for hot isostatic pressing. Gas atomization provides spherical powder with the high purity that is required for HIP. Water atomized steel powder is significantly cheaper but has some drawbacks when it comes to the powder purity, irregular powder surface, difficulty to produce high alloyed materials, etc.
Recent advancement in the water...
Dr
Hamish Fraser
(The Ohio State University)
07/12/2017, 16:55
Oral Presentation
Recently, a Center of Excellence (CoE) in Hot Isostatic Pressing (HIP) has been established at the Ohio State University tasked with overcoming the long existing technical barriers to the use of HIP for critical applications and exploiting fully the advantages afforded by powder metallurgy processing. In particular the current research has been aimed at minimizing the influence of prior...
Dr
Maxime Gauthier
(National Research Council Canada)
07/12/2017, 17:20
Oral Presentation
Much work has been carried out in the last decade on the development of high performance alloys to reduce vehicle weight. These alloys are often characterized by low room-temperature formability. A variety of hot forming processes (hot stamping, hot extrusion and high-pressure die casting) are thus being used or adapted for these alloys. The final mechanical properties, shape complexity and...
Mr
Jian Jia
(Central Iron and Steel Research Institute), Prof.
Yiwen Zhang
(Central Iron and Steel Research Institute)
07/12/2017, 17:45
Oral Presentation
FGH4097 is a new type of powder metallurgy (PM) superalloy developed in China. It is mainly used as the key hot end components for the advanced aero-engines, for instance the turbine disc and compressor disk etc. Powders of FGH4097 alloy were produced by plasma rotating electrode process (PREP) firstly, and then consolidated into billets with a size of Φ80*135mm by hot isostatic pressing...
Mr
Arnulf Hoertnagl
(Institute for Materials System Technology Thurgau at the University of Applied Sciences Konstanz)
08/12/2017, 08:00
The formation of undesirable intermetallic phases affected by low cooling rates of HIP-manufactured components made of duplex stainless steels requires a conventional heat treatment combined with quenching in a water bath. From a technical point of view, this thermal post-treatment is energy-intensive as well as time-intensive. An approach to avoid these disadvantages is the application of an...
Mr
Sebastian Riehm
(RWTH Aachen University, Institute for Materials Applications in Mechanical Engineering, IWM)
08/12/2017, 08:25
Oral Presentation
A promising production route for high quality taylor-made parts can be established by combining Additive Manufacturing (AM) and Hot Isostatic Pressing (HIP): With the help of a numerical simulation routine, the geometry of the parts prior to HIP is calculated. These geometry-optimised parts are built by Laser Beam Melting (LBM) and consolidated by HIP. After HIP they exhibit a net-shape form...
Dr
Alexander Logachev
(JSC"Kompozit")
08/12/2017, 08:50
Oral Presentation
We have proposed a following approach to determine the parameters of hot isostatic pressing (HIP) intend for consolidation of the powders from intermetallic alloys with a large prone to embrittlement at ambient temperatures. We analyze a temperature dependence of the mechanical properties (0.02 proof stress, σ0.02) and diffusion characteristics (the diffusion coefficients in the bulk and along...
Prof.
Christoph Broeckmann
(IWM, RWTH Aachen University, Germany)
08/12/2017, 09:15
Oral Presentation
Components produced by PM-HIP from corrosion resistent steels with a ferritic-austenitic duplex microstructure are widely used in offshore-applications and in the chemical industry. In most of these applications high toughness – particular at low temperatures – is a mandatory requirement. In contrast to austenitic steels, tough-ness of duplex steel shows a temperature dependent transistion...
Robert Joseph
(Metal Technology Co. Ltd.)
08/12/2017, 09:40
Titanium aluminide, one of important next generation high temperature materials, attracts intense R&D interests, and the application for aeronautics and space fields is seriously studied. TiAl components additively manufactured by us possesses more than 99% density and good mechanical properties, however residual voids are problematic in the area where cyclic properties are important,...
Dr
Victor Butrim
(JSC"Kompozit" Deputy director general)
08/12/2017, 10:05
Oral Presentation
HIP solid-state diffusion welding is a controlled process during all stages of technological process. Unlike other known solid-state welding techniques the HIP allows to provide strong and dense welded joint with stability properties irrespective of the sizes and a configuration of welded materials contact surfaces.
Here we present some special pilot examples of HIP diffusion welding of...
Dr
Benjamin PICQUE
(AUBERT&DUVAL)
08/12/2017, 11:00
One of the main challenges for the next generation of aeronautic engines aims at reducing consumptions and environmental impact like emissions and noise, in improving at the same time the performances and efficiency. To reach these objectives, an increase of the engines internal temperature is needed.
In the turbine, increasing temperature is already possible for the discs with the use of...
Mr
Rei Mihara
(Space Technology Group, Research & Engineering Div., IHI Corporation)
08/12/2017, 11:35
Net Shape HIP (NSHIP) process is a suitable approach for both high performance and cost reduction compared to the castings and the machining of forged materials. We have developed the NSHIP technology in order to utilize for the LE-9 engine turbopump of H3 rocket which is under development by JAXA.
In this paper, we show the verification result of our modified FEM analysis model which...
Dr
Suk-Hwan Yoon
(Korea Aerospace Research Institute)
08/12/2017, 12:00
In Korea, we are developing liquid rockets for commercial launch services, and the government agency, Korea Aerospace Research Institute (KARI), is responsible for main development. Turbopump, which is a key component of liquid rocket engine, is a rotating machine that pressurizes fuel and liquid oxygen in an extreme environment and supplies them to a combustion chamber. Design requirements...
Dr
Gerard RAISSON
(Consultant)
08/12/2017, 14:00
The paper addresses the challenging scientific and technological tasks of achieving limitation of over thickness to 1% of a linear dimension in HIPing Near Net shape PM Components of large size up to 3 meter diameter. To reach this goal it is necessary to increase precision of modeling which has to include thermal conductivity for large (thick) parts, especially influential at the initial...
Mr
Alessandro Abena
(University of Birmingham)
08/12/2017, 14:35
The non-uniform shrinkage of the tool/canister under hot isostatic pressing (HIP) condition is influenced by many factors, among which the powder relative density distribution seems to have a strong effect. Prediction of the final tool deformation is fundamental for canister design in order to meet dimensional tolerances of final component. To this end, numerical approaches represent a...
Mr
Yuanbin Deng
(RWTH Aachen University, Institute for Materials Applications in Mechanical Engineering, IWM)
08/12/2017, 15:00
In Hot Isostatic Pressing (HIP) of metal powder, anisotropic shrinkage of the capsule induced by inhomogeneity of the initial powder filling density determines the reproducible realization of small geometrical allowances. This becomes a detrimental factor in the manufacturing of near-net-shape components due to their high requirements of the final shape accuracy. This challenge can be solved...
Mr
Robert Conaway
(1944)
08/12/2017, 15:25
