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austenite decomposition

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Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006300
EISBN: 978-1-62708-179-5
...Abstract Abstract This article discusses the stable and metastable three-phase fields in the binary Fe-C phase diagram. It schematically illustrates that austenite decomposition requires accounting for nucleation and growth of ferrite and then nucleation and growth of pearlite in the remaining...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006319
EISBN: 978-1-62708-179-5
...Abstract Abstract The transformation of austenite of cast irons represents a more complex and less studied subject. This article discusses the general features of the decomposition of austenite into bainite. It describes the heat treatment cycles of austempered cast iron microstructure...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005959
EISBN: 978-1-62708-168-9
... by a discussion on physical metallurgy, including crystallographic identity, thermal stability and decomposition, nitrogen and carbon solubility in expanded austenite, and diffusion kinetics of interstitials. It provides a description of low-temperature nitriding and nitrocarburizing processes for primarily...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005786
EISBN: 978-1-62708-165-8
... (upper right) and time-temperature-transformation diagram representing isothermal austenite decomposition upon cooling (lower right) for a eutectoid steel. Adapted from Ref 8 Fig. 4 Austenite grain (nodule) us versus austenitizing time at different temperatures. Reprinted from Ref 1...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005966
EISBN: 978-1-62708-166-5
... ferrite (white etching grains) comingled with austenite decomposition product. At the bottom, the structure becomes solely austenite decomposition product. While the carbon content in the steel increases in the downward direction in this micrograph, the decarburized zone extends well below the field...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003739
EISBN: 978-1-62708-177-1
... Microstructures in Low-Carbon Alloy Steels and Their Mechanical Properties , Transformation and Hardenability in Steels , Climax Molybdenum Co., 1967 , p 69 – 107 32. Nilan T.G. , Austenite Decomposition at High Pressure , Transformation and Hardenability in Steels , Climax Molybdenum Co., 1967...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005414
EISBN: 978-1-62708-196-2
... Decomposition of Austenite into Several Transformation Products , Acta Mater. , Vol 45 , 1997 , p 2911 – 2920 50. Koistinen D.P. and Marburger R.E. , A General Equation Describing the Extent of the Austenite-Martensite Transformation in Pure Iron-Carbon Alloys and Plain Carbon Steels...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005517
EISBN: 978-1-62708-197-9
... chemical reactions. Such methods, while of great value in their own right, were limited when trying to understand the general behavior of metallic alloys, where properties of nonstoichiometric metallic phases with wide ranges of composition, such as austenite and ferrite in steels or the gamma phase...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005819
EISBN: 978-1-62708-165-8
... be considered only introductory. The Iron-Carbon Phase Diagram Pearlite and Bainite Proeutectoid Ferrite and Cementite Martensite Tempered Martensite The previous sections have shown that the decomposition of austenite produces a wide variety of microstructures in response to such factors...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005587
EISBN: 978-1-62708-174-0
... 351 – 362 20. Vandermeer R.A. , Modeling Diffusional Growth during Austenite Decomposition to Ferrite in Polycrystalline Fe-C Alloys , Acta Metall. , Vol 38 ( No. 12 ), 1990 , p 2461 – 2470 21. Tecco D.G. , The Effects of Micro-Alloy Level over the Kinetics of Grain...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003195
EISBN: 978-1-62708-199-3
... and ferrite. A, austenite. Source: Ref 6 Fig. 4 The procedure for determining isothermal cooling (IT) diagrams. Line 1: Temperature versus time. Line 2: Elongation versus time. S represents the start and F the finish of austenite decomposition. Fig. 5 Isothermal transformation diagram...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005962
EISBN: 978-1-62708-168-9
.... , Austenite Decomposition during Continuous Cooling of an HSLA-80 Plate Steel , Metall. Mater. Trans. A , Vol 27 , 1996 , p 1557 – 1571 10.1007/BF02649815 11. Vaynman S. , Isheim D. , Kolli R.P. , Bhat S.P. , Seidman D.N. , and Fine M.E. , High-Strength Low-Carbon...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005882
EISBN: 978-1-62708-167-2
.... , On the Role of Kinematics in Constructing Predictive Models of Austenite Decomposition , Austenite Formation and Decomposition , Buddy Damm E. and Merwin M.J. , eds., ISS and TMS , 2003 , p 311 – 331 • Ferguson B.L. , et al. , Limited Hardenability Steels and Intensive Quenching...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001480
EISBN: 978-1-62708-173-3
... for publication 10.1179/cmq.1993.32.4.351 20. Vandermeer R.A. , Modeling Diffusional Growth During Austenite Decomposition to Ferrite in Polycrystalline Fe-C Alloys , Acta Metall. , Vol 38 ( No. 12 ), 1990 , p 2461 – 2470 10.1016/0956-7151(90)90257-H 21. Tecco D.G. , The Effects...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005949
EISBN: 978-1-62708-168-9
... 1044, 1045, 1045H, and 1046. Source: Ref 4 , 7 Heat treatment temperature of selected plain carbon steels Table 10 Heat treatment temperature of selected plain carbon steels Steel Austenitizing temperature for direct hardening Normalizing temperature range (with nominal) Full...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005936
EISBN: 978-1-62708-166-5
... dimensional stability, because precipitations in the form of ε/η transition carbides (80 to 180 °C, or 175 to 355 °F) or cementite (250 to 350 °C, or 480 to 660 °F) lead to a decrease in volume, whereas the decomposition of retained austenite in ferrite and cementite (200 to 300 °C, or 390 to 570 °F) causes...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005941
EISBN: 978-1-62708-168-9
... into lower-density martensite. Volumetric changes also occur from the other transformation products in steel (ferrite, pearlite, bainite), but the decomposition of austenite into martensite produces the largest volumetric change of all these products ( Fig. 6 ). Therefore, martensite formation can...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005822
EISBN: 978-1-62708-165-8
... to ensure that austenitic decomposition will not result in the formation of bainite and cementite. In large pieces comprising both thick and thin sections, not all areas will cool at the same rate. As a result, surface areas and thin sections may be highly martensitic, and the slower-cooling core may...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003734
EISBN: 978-1-62708-177-1
... that ledges span both cementite (C) and ferrite (F) as they grow into the austenite (A). Source: Ref 10 Fig. 3 Pearlite microstructure in crucible steel ingot. Source: Ref 3 Fig. 4 Time-temperature-transformation diagram showing austenite decomposition into pearlite and bainite. Source...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005977
EISBN: 978-1-62708-168-9
... Martensitic = 700 1200 1500 PC = 700–1000 … … PC = 800 Austenitic = 360 … … PNC = 1500 PCN = 1350 Layer thickness, μm PN = 2–20 2–20 3–6 PN = 17 (3–5 h) Up to 2000 6 8 PC = 5–40 … … PC = 15 (22 h) … … … PCN = 10(9 h) Gas PN = 75–80%H 2 -20–25%N 2 PCN...