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sintered chemistry

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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
... relating to welding of PM stainless steels, specifically, the effects of density, residual porosity, and sintered chemistry on weldability. Further, the article investigates the influence the sintering atmosphere has on machinability, as well as differences created by the presence of residual porosity...
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
... sintering. All conventional aluminum PM alloys behave in a similar manner, although the extent and kinetics of the hardness transition varies with alloy chemistry. Fig. 4 Aging response of A-2014. Apparent hardness as a function of time after sintering. Source: Ref 37 When even greater...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006056
EISBN: 978-1-62708-175-7
... blends, typically in the range of 0.2 to 3% by weight, to facilitate compaction processes. Therefore, quality systems rely on analytical methods to quantify the organic content of powder blends. Sintered weight loss is a simple method used to quantify mass loss during sintering. It is calculated from...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005727
EISBN: 978-1-62708-171-9
... to a false representation of the as-received feedstock. The material groups, chemistry, manufacturing, and applications of commonly used materials in thermal spray are provided in Table 1 . Sintering The term sintering refers to the joining of particles through the combined actions of pressure...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
... there is still open porosity. Aluminum and silicon almost completely evaporate; potassium remains in the sintered ingot, forming bubbles. The changes in chemistry during sintering, associated with the potassium bubble formation, are critical to the properties of the ingot and, consequently, to those of the final...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... of the preform, refine the sintered grain structure, and produce deformation texture allowing production of a part with mechanical properties dependent primarily on chemistry and heat treatment. Both forging preforms and near-net-shape parts produced by CIP facilitate production of prototype parts with reduced...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006118
EISBN: 978-1-62708-175-7
... contains oxides of silicon on the particle surfaces, which must be largely reduced in order to enhance sintering and to improve the resistance of the sintered material to pitting corrosion. Control of chemistry and microstructure is critical to achieving the desired final properties, including...
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
... of A-2014 is shown in Fig. 4 . Here, a hardness increase of ~15% transpires within two days after sintering. All conventional aluminum PM alloys behave in a similar manner, although the extent and kinetics of the hardness transition varies with alloy chemistry. Fig. 4 Aging response of A-2014...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006674
EISBN: 978-1-62708-213-6
... engineered materials are given in Table 1 . Additional CTE data can be found in the latest edition of the CRC Handbook of Chemistry and Physics as well as many industry trade associations, materials science textbooks, and literature from manufacturers of alloys, ceramics, and plastics. The values...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005848
EISBN: 978-1-62708-167-2
... Abstract Controlled atmosphere chambers are used to control the surface chemistry of the metals that are being processed. This article focuses on the various types of controlled atmospheres used in induction heat treating and brazing, namely, inert gas atmospheres based on argon and helium...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006045
EISBN: 978-1-62708-175-7
... the sintering of blended elemental powders, high-strength titanium alloys, and porous material as well as the sintering of titanium powders by microwave heating. cold isostatic pressing die pressing direct powder rolling high-strength titanium alloys microwave heating powder consolidation powder...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006136
EISBN: 978-1-62708-175-7
... Abstract Direct powder rolling (DPR) is a process by which a suitable powder or mixture of powders is compacted under the opposing forces of a pair of rolling mill rolls to form a continuous green strip that is further densified and strengthened by sintering and rerolling. This article...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006068
EISBN: 978-1-62708-175-7
... of Sintering Stainless Steel Powder,” Special Interest Seminar, 1998 World Congress ( Granada, Spain ) 11. Reinshagen J. and Neupaver A. , Principles of Atomization , Physical Chemistry of Powder Metals Production and Processing , Smith W.M. , Ed., TMS/AIME , 1989 , p 16 12...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006582
EISBN: 978-1-62708-290-7
... on existing nickel-base superalloys. However, commercial entities have begun investigating the development of AM-specific nickel-base superalloy chemistries to leverage the unique thermal signatures of these processes. Additionally, early driving forces for materials development of nickel-base superalloys...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
.... Chemical Analysis The chemistry of a ceramic or glass is an important starting point in the characterization process because it is almost always vital to specification and property control. Very small quantities of additive can have a major effect on both processing and ultimate properties. Sintering...
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
... master alloy powders, or other desired additions, is cold pressed into shape and subsequently sintered to higher density and uniform chemistry. One such process is the ADMA Products, Inc. blended elemental hydrogenated titanium powder production process based on titanium sponge conversion with hydrogen...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006100
EISBN: 978-1-62708-175-7
... on the manufacturing process of powder metallurgy friction materials through a process of mixing/blending, compacting, and sintering. The final machining that they undergo, to ensure that they meet dimensional specifications, is also discussed. blending compacting friction powder metallurgy materials...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003054
EISBN: 978-1-62708-200-6
... Abstract Sintering provides the interparticle bonding that generates the attractive forces needed to hold together the otherwise loose ceramic powder mass. It also improves hardness, strength, transparency, toughness, electrical conductivity, thermal expansion, magnetic saturation, corrosion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... Abstract This article discusses the production of low-alloy steel parts by powder forging, focusing on the material considerations, such as hardenability and inclusion assessment; and process considerations, including sintering and reheating, metal flow, and secondary operations. It presents...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003129
EISBN: 978-1-62708-199-3
... Abstract This article provides an overview of the composition and properties of powder metallurgy (P/M) aluminum powders for pressed and sintered parts. It includes the steps involved in the processing of high-performance P/M alloys. The article describes the classes of high-performance P/M...