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retained austenite
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770077
EISBN: 978-1-62708-337-9
... Abstract This chapter addresses the issue of retained austenite in quenched carburized steels. It explains why retained austenite can be expected at the surface of case-hardened components, how to estimate the amount that will be present, and how to effectively stabilize or otherwise control...
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Published: 01 January 2015
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Published: 01 January 2015
Fig. 5.19 Plate martensite and retained austenite (white patches) in (a) Fe-1.22C and (b) Fe-1.4C alloys. Light micrographs. Source: Ref 5.10
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Published: 01 January 2015
Fig. 5.33 Interlath retained austenite, the thin linear features, in a steel containing 0.06 wt% carbon. Dark-field transmisson electron micrograph. Courtesy of Professor Steven Thompson, Colorado School of Mines
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Published: 01 January 2015
Fig. 6.8 Retained austenite (gray, marked with A) between ferrite laths of upper bainite in 0.6% carbon steel containing 2.0% Si and transformed at 400 °C (750 °F). Transmission electron micrograph, original magnification 40,000×. Source: Ref 6.12
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Published: 01 January 2015
Fig. 12.24 Retained austenite as a function of transformation temperature and time in microstructures produced by isothermal holding of a 0.14% C-1.21% Si-1.57% Mn steel intercritically annealed at 770 °C (1420 °F). Source: Ref 12.61
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Published: 01 January 2015
Fig. 12.27 Changes in retained austenite content, measured after tensile testing at room temperature, as a function of strain in intercritically annealed 0.14% C-Si-Mn steel isothermally transformed at 350 °C (660 °F) for 4 min, Aa; 350 °C (660 °F) for 15 min, Ab; 400 °C (750 °F) for 4 min, Ac
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Published: 01 January 2015
Fig. 17.16 Transformation of retained austenite in an Fe-1.22C alloy as a function of time at three tempering temperatures. Source: Ref 17.29
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Published: 01 January 2015
Fig. 17.17 Retained austenite and cementite as a function of tempering temperature in 4340 and 4130 type steels. The amounts of the phases were determined by Mössbauer spectroscopy. Source: Ref 17.30
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in Deformation, Mechanical Properties, and Fracture of Quenched and Tempered Carbon Steels
> Steels: Processing, Structure, and Performance
Published: 01 January 2015
Fig. 18.13 (a) Interlath retained austenite (white diagonal bands) and transition carbides in 4130 steel tempered at 150 °C (300 °F). (b) Dense transition carbide precipitation in a martensite lath in 4150 steel tempered at 150 °C. Dark-field transmission electron micrographs. Courtesy
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in Metallographic Specimen Preparation
> Metallographer’s Guide: Practices and Procedures for Irons and Steels
Published: 01 March 2002
Fig. 7.38 A plot showing the percent of retained austenite in specimens of a dual-phase steel sheet prepared with new and worn grinding papers (two specimens each). The true amount of retained austenite is 8.5% as seen in the two bars on the right for chemically polished specimens (no grinding
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Published: 01 January 2015
Fig. 21.30 Strain-induced transformation of retained austenite to martensite as a function of strain. As-quenched tempered martensite is dark, retained austenite is white, and strain-induced martensite is orange. Sodium metabisulfite etch, 1000×, light micrographs. Courtesy of Marc Zaccone
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Published: 01 January 2015
Fig. 21.32 Retained austenite as a function of distance from the surface of carburized 4320 steel in as-carburized sample and after various types of shot peening. Source: Ref 21.55
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Published: 01 January 2015
Fig. 21.35 Fatigue limits as a function of retained austenite in 8719 steel carburized and hardened as marked. Source: Ref 21.57
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Published: 01 January 2015
Fig. 24.14 Hardness and retained austenite as a function of tempering temperature for A-2 tool steel. Source: Ref 24.39
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Published: 01 January 2015
Fig. 24.15 Hardness and retained austenite as a function of tempering temperature for H-13 tool steel. Source: Ref 24.39
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Published: 01 March 2002
Fig. 2.37 Retained austenite (white etching phase) in a water-quenched 0.93% C-1.45% Mn steel. Gray etching phase is plate martensite. 2% nital etch. 1000×
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Published: 01 March 2002
Fig. 2.39 Retained austenite (arrow indicating small, rounded, white areas) in a 0.16% C, 1.8% Mn, 0.7% Ni, 0.75% Cu, 2% Cr, and 0.3% Mo steel. Dark matrix is martensite. Etched in a solution of 10 g sodium thiosulfate and 3g potassium metabisulfite in 100 cm 3 of water (Beraha’s etch). 1000×
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Published: 01 August 2013
Fig. 2.11 Martensite microstructure (needle-shaped grains) and retained austenite (white matrix). Source: Ref 2.1
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in The Various Microstructures of Room-Temperature Steel
> Steel Metallurgy for the Non-Metallurgist
Published: 01 November 2007
Fig. 4.18 Volume percent retained austenite versus carbon content in plain carbon steels quenched to room temperature. Data points from several references establish the width of the scatter band
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