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
Materials
Oral Presentation
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
Aerospace
Oral Presentation
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
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
Materials
Oral Presentation
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
Materials
Oral Presentation
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...
