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Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005996
EISBN: 978-1-62708-168-9
... Abstract This article is a compilation of tables that present information on austenitizing temperatures for direct-hardening carbon and alloy steels, case depth of steels for different carburizing times and temperatures, typical heat treatments for case hardening of carbon and carburizing...
Book Chapter

By John G. Speer, Robert J. Gaster
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
... Abstract Austenitization refers to heating into the austenite phase field, during which the austenite structure is formed. This article highlights the purpose of austenitization, and reviews the mechanism and importance of thermodynamics and kinetics of austenite structure using an iron-carbon...
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Published: 01 August 2013
Fig. 2 1045 steel bar normalized by austenitizing at 1095 °C (2000 °F) and cooling in air. Structure is pearlite (gray) with a network of grain-boundary ferrite (white) and a few side plates of ferrite. Picral etch. Original magnification: 500× More
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Published: 01 August 2013
Fig. 11 Effect of austenitizing temperature on multiplying factors for manganese and chromium at high carbon levels. (Note Kramer data, Ref 14 , for medium-carbon steels.) Source: Ref 5 More
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Published: 01 August 2013
Fig. 12 Effect of austenitizing temperature on multiplying factors for molybdenum at high carbon levels. Source: Ref 5 More
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Published: 01 August 2013
Fig. 13 Effect of austenitizing temperature on multiplying factors for aluminum, silicon, and nickel at high carbon levels. (Arrow on aluminum curve denotes maximum percentage studied by Kramer.) Source: Ref 5 More
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Published: 01 August 2013
Fig. 14 Multiplying factors for carbon at each austenitizing condition. Data plotted on background of original Kramer ( Ref 14 ) data for medium-carbon steels with grain-size variation from ASTM 4 to 8. Source: Ref 5 More
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Published: 01 August 2013
Fig. 4 Gas quenching in a single-chamber furnace (austenitizing/thermochemical treatment and quenching in one single chamber) More
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Published: 01 August 2013
Fig. 3 Austenitizing rate-temperature curves for commercial plain carbon eutectoid steel. Prior treatment was normalizing from 875 °C (1610 °F); initial structure, fine pearlite. First curve at left shows beginning of disappearance of pearlite; second curve, final disappearance of pearlite More
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Published: 01 August 2013
Fig. 4 Austenite grain (nodule) us versus austenitizing time at different temperatures. Reprinted from Ref 1 ; original source Ref 10 More
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Published: 01 August 2013
Fig. 6 Carbon content in austenite as a function of austenitizing time and temperature for a 1.27C (by weight) steel. Arrows indicate the disappearance of ferrite. Reprinted from Ref 13 More
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Published: 01 August 2013
Fig. 12 Austenite grain size of pure iron as a function of austenitizing time and temperature, showing expected grain-growth behavior. Reprinted from Ref 8 ; original source Ref 21 More
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Published: 01 August 2013
Fig. 13 Schematic illustration showing effect of austenitizing temperature on austenite grain size of plain carbon coarse-grained (shaded area) and fine-grained steels (solid line). The ASTM International grain size number “N” is defined by the relation 2 N−1 = n , where n is the number More
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Published: 01 August 2013
Fig. 19 Effects of austenitizing temperature on grain size and martensite start (M s ) temperature of 52100 steel More
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Published: 01 August 2013
Fig. 14 Effect of austenitizing temperature on the rate of austenite formation from pearlite in a eutectoid steel More
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Published: 01 December 2008
Fig. 9 Influence of austenitizing temperature on hardness (H) and retained austenite (γ) in high-chromium irons More
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Published: 30 September 2015
Fig. 3 Effect of austenitizing temperature on the amount of retained austenite after quenching of M2 with 0.80 to 0.91% C More
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Published: 30 September 2015
Fig. 20 Effect of austenitizing temperature on the transverse rupture strength at constant tempering temperature of 560 °C (1040 °F). Triangles, 1.29% C, 3.9% Cr, 6.1% W, 4.8% Mo, 3.0% V, bar Ø115 mm (4.5 in.), PM HIP and hot worked. Circles, 0.87% C, 4.2% Cr, 6.4% W, 5.0% Mo, 1.9% V, bar Ø 91 More
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Published: 30 September 2015
Fig. 23 Effect of austenitizing conditions on the plastic work of bending of a conventional HSS at constant hardness of 60 HRC More
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Published: 30 September 2015
Fig. 6 Effect of austenitizing time at 1210 °C (2210 °F) on the martensite start temperature of a high-speed steel containing 0.9% C, 4.1% Cr, 6.4% W, 5% Mo, and 1.8% V. Source: Ref 14 More