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postsintering heat treatment

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002374
EISBN: 978-1-62708-193-1
..., and postsintering heat treatments. Safety factors for P/M materials are also detailed. References 1. German R.M. , Powder Metallurgy Science , 2nd ed. , Metal Powder Industries Federation , 1994 2. Karlsson B. and Bertilsson I. , Mechanical Properties of Sintered Steels...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003166
EISBN: 978-1-62708-199-3
... requiring postsinter heat treatment, they can provide clearly superior mechanical properties ( Table 4 ). The W-Ni-Cu system was the first heavy-alloy system developed and is still used occasionally for components that must exhibit minimal ferromagnetic character. By far the most important alloy system...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006125
EISBN: 978-1-62708-175-7
... ∼2:1 to 9:1, and postsinter heat treatment is mandatory in every case to control intermetallic formation (Co 3 W and others). Although a variety of possible fabrication technologies exist and may be utilized for very specific applications, virtually all WHA manufacture worldwide utilizes...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006119
EISBN: 978-1-62708-175-7
... and part-to-part) as well as a greater degree of the control of sintering parameters. Ferritic and austenitic stainless steels typically do not benefit from a postsinter heat treatment, except when parts are sintered in an atmosphere containing nitrogen and the cooling rate was inadequate to prevent Cr...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006020
EISBN: 978-1-62708-175-7
... satisfactory properties. However, optimal properties require postsintering heat treatment to tailor strength and ductility. NET-SHAPE COMPONENTS formed using the powder injection molding (PIM) process are made mostly of a variety of metals (approximately 80% of all applications), primarily of stainless steel...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006069
EISBN: 978-1-62708-175-7
... containing part is heat treated in a nitrogen-rich atmosphere, a graded material with a hard and wear-resistant surface enriched with cubic carbides and a tough core is produced. Heat treatment with N 2 can take place separately or as part of the single sinter cycle. Figure 9 shows a typical N 2...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006132
EISBN: 978-1-62708-175-7
... in camshaft bearing cap (cam cap) production. The article discusses the production steps involved in cam cap manufacturing: powder production, compaction, sintering, repressing, and heat treatment. In addition, it reviews the R&D work involved in improving the structural properties of emerging aluminum...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001083
EISBN: 978-1-62708-162-7
... Abstract This article focuses on the mechanical properties, production of titanium powder metallurgy (P/M) compacts, namely, blended elemental (BE) compacts and prealloyed (PA) compacts. It explains the postcompaction treatments of titanium P/M compacts, including heat treatment...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006497
EISBN: 978-1-62708-207-5
.... It reviews emerging technologies that promise to offer exciting ways to produce aluminum parts. The article discusses the various steps involved in PM, such as powder production, compaction, sintering, repressing, and heat treatment. It provides information on aluminum production statistics and the wear...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006255
EISBN: 978-1-62708-169-6
... and prevents oxidation while workpieces are in the furnace. Oxygen in solution can segregate to grain boundaries and cause brittle behavior. Hydrogen also prevents loss of material due to oxide evaporation. Material annealed in hydrogen does not require postanneal chemical cleaning or other treatment to remove...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
... heat treatment steps (annealing and aging). Other postconsolidation steps that are sometimes used in MIM include tumbling, coining, final machining, and final surface treatment (carburizing, nitriding, carbonitriding, black oxide treatment, etc.). Figure 2 shows a schematic flow chart for a typical...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006022
EISBN: 978-1-62708-175-7
.... Thermophysical properties of sintered steels, in particular their coefficient of thermal expansion and their thermal conductivity, are needed when designing parts and when modeling heat treatment processes. Opinions differ in the PM community as to the effect of density on these properties. Danninger has shown...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006101
EISBN: 978-1-62708-175-7
.... Potter V.C. , James W.B. , and Murphy T.F , Improved Dimensional Control and Elimination of Heat Treatment for Automotive Parts , Advances in Powder Metallurgy , Vol 3 ., Pease L.F. III and Sansoucy R.J. , Ed., Metal Powder Industries Federation , 1990 , p 33 – 48...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002486
EISBN: 978-1-62708-194-8
... the response to these secondary operations, several guidelines are provided in this section. Repressing Impregnation and Infiltration Steam Treating Heat Treatment Finishing Once the die-compaction processing method has been selected the designer must consider the product configuration...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006042
EISBN: 978-1-62708-175-7
.... In contrast, modern HIP units can provide a rapid cool option, which decreases cycle time and potentially offers the capability for in situ heat treatment. Fig. 6 Schematic of conventional (broken line) and rapid-cool (solid line) HIP cycles. For some materials, the severity of the cooling rate...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006095
EISBN: 978-1-62708-175-7
..., and extrusions), such as hot rolling, forging, and extrusion The mechanical properties of PM titanium products also depend on the final product heat treatment, and chemical and/or thermochemical processing, if the latter steps are used. Tables 1 , 2 , 3 , 4 , 5 , 6 provide a comprehensive...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... The effect of air gaps is to shear the magnetization curve. Magnetic properties of magnetic materials depend on the chemical composition, cold deformation, and heat treatment. Iron, nickel, and cobalt are ferromagnetic materials. Iron and cobalt have high magnetic saturations ( Table 1 ). Cobalt and cobalt...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006579
EISBN: 978-1-62708-290-7
... solutionizing, quenching, and aging steps exhibited properties on par with cast/wrought data, albeit anisotropic. This indicates that for copper-chromium alloys made with LPBF, only direct aging without solution heat treatment is a superior approach for realizing a good balance between mechanical properties...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006412
EISBN: 978-1-62708-192-4
... metals at many sites in the interface. Heat, which may be applied simultaneously with pressure in hot rolling and subsequently in postroll annealing, serves to develop complete diffusion bonding from the initial weld sites and to recrystallize the aluminum alloys so that the final bimetallic strip...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7