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decarburization

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
..., and uniformity. It provides examples of oxides that form beneath the surface of steel and explains why it occurs. It describes the conditions associated with decarburization and explains how to determine the depth of decarburized layers in eutectoid, hypoeutectoid, and hypereutectoid steels. It also discusses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440275
EISBN: 978-1-62708-262-4
... Abstract This appendix discusses in brief the sources of decarburization of steels as well as the effect of heat treatment on the process. decarburization heat treatment steel DECARBURIZATION is defined as “a loss of carbon atoms from the surface of a ferrous material, thereby...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770037
EISBN: 978-1-62708-337-9
... Abstract This chapter explains how decarburization can occur during carburizing processes and how to limit the severity of its effects. It describes the reactions and conditions that result in a loss of carbon atoms and how they vary with changes in the physical metallurgy of the affected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050175
EISBN: 978-1-62708-311-9
... Abstract This chapter explains how to recognize decarburization and related defects. It includes images showing how decarburization appears in various steels, discusses stock removal practices, and describes common defects and flaws such as quench cracks and where they are typically found...
Image
Published: 01 August 1999
Fig. 12.7 (Part 1) Decarburization in a 0.8% C eutectoid steel. 0.78C-0.30Mn (wt%). (a) and (b) Transverse section of a hot-rolled bar; normalized. Arrows indicate total depth of decarburization. (a) Picral. 50×. (b) Picral. 100×. (c) and (d) Austenitized at 850 °C, water quenched More
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Published: 01 August 1999
Fig. 12.7 (Part 2) Decarburization in a 0.8% C eutectoid steel. 0.78C-0.30Mn (wt%). (a) and (b) Transverse section of a hot-rolled bar; normalized. Arrows indicate total depth of decarburization. (a) Picral. 50×. (b) Picral. 100×. (c) and (d) Austenitized at 850 °C, water quenched More
Image
Published: 01 August 1999
Fig. 12.8 (Part 1) Decarburization in a 0.8% C eutectoid steel: estimation of depth by the M s method. Same material as in Fig. 12.7 . Values in parentheses are carbon content for which temperature indicated is the M s temperature. (a) Austenitized at 850 °C, quenched to 260 °C, held More
Image
Published: 01 August 1999
Fig. 12.9 (Part 1) Decarburization in a 0.4% C hypoeutectoid steel in the normalized and quenched-and-tempered conditions. 0.41C-0.24Si-0.70Mn (wt%). (a) Normalized. Picral. 100×. (b) and (c) Austenitized, water quenched, tempered at 175 °C. Arrow indicates total depth of decarburization More
Image
Published: 01 August 1999
Fig. 12.10 Decarburization in a 0.4% C hypoeutectoid steel in the spheroidized condition. 0.41C-0.24Si-0.70Mn (wt%). Austenitized, water quenched as in Fig. 12.9 (Part 2) (b) , tempered at 700 °C for 4 h. (a) 1% nital. 75×. (b) to (e) 1% nital. 1000×. (e) Structure of the unaffected More
Image
Published: 01 August 1999
Fig. 12.11 (Part 1) Decarburization in a 0.4% C hypoeutectoid steel: estimation of depth by the M s method. 0.41C-0.24Si-0.70Mn (wt%). This series supplements that shown in Fig. 12.9 . Arrow in (a) to (d) indicates total depth of decarburization as judged from the data in Fig. 12.9 More
Image
Published: 01 August 1999
Fig. 12.12 Decarburization in hypoeutectoid steels. (a) 0.6% C hot-rolled bar. 0.55C-0.08Si-0.60Mn (wt%). Normalized. Picral. 250×. (b) 0.2% C hot-rolled plate. 0.24C-0.02Si-0.80Mn (wt%). Normalized. Picral. 250×. More
Image
Published: 01 August 1999
Fig. 12.13 (Part 1) Decarburization in a 1.3% C hypereutectoid steel in the normalized and spheroidized conditions. 1.29C-0.17Si-0.40Mn (wt%). Although these two specimens are from the same batch of steel, they differ in depth of decarburization. The spheroidized material is illustrated after More
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Published: 01 August 1999
Fig. 12.14 (Part 1) Decarburization in a 1.3% C hypereutectoid steel in the quench-hardened condition. 1.29C-0.17Si-0.40Mn (wt%). Austenitized at 850 °C, water quenched, tempered at 175 °C. This material is shown in the spheroidized condition before hardening in Fig. 12.13 (Part 2) (c More
Image
Published: 01 August 1999
Fig. 12.23 (Part 1) Effect of mild decarburization on case carburizing. 0.15% C (0.17C-0.05Si-0.64Mn, wt%). (a) Pack carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C, cooled in air. Picral. 75×. (b) Pack carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C More
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Published: 01 August 1999
Fig. 12.24 (Part 1) Effect of moderate decarburization on case carburizing. 0.15% C (0.17C-0.05Si-0.64Mn, wt%). (a) Carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C, cooled in air. Picral. 75×. (b) Carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C, cooled More
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Published: 01 August 1999
Fig. 12.24 (Part 2) Effect of moderate decarburization on case carburizing. 0.15% C (0.17C-0.05Si-0.64Mn, wt%). (a) Carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C, cooled in air. Picral. 75×. (b) Carburized at 940 °C for 2 h, decarburized, austenitized at 850 °C, cooled More
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Published: 01 November 2007
Fig. 7.3 Decarburization removes carbon from a 1095 steel bar by diffusion. A surface reaction between the steel and the oxygen to form CO 2 depletes the surface of carbon atoms. Carbon atoms migrate from the interior of the bar to the carbon-depleted surface More
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Published: 01 March 2006
Fig. 1 (a) Decarburization in a 0.8% C eutectoid steel, 0.78C-0.30Mn. Picral etch, 50×. (b) Transverse section of a hot-rolled bar; normalized. Arrows indicate total depth of decarburization. Picral etch, 100×. Source: Ref 2 More
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Published: 01 March 2006
Fig. 2 Decarburization in a 1.3% C hypereutectoid steel (1.20C-0.17Si-0.40Mn) in the quench-hardened condition. Austenitized at 850 °C (1560 °F), water quenched, tempered at 175 °C (350 °F). (a) 1% nital etch, 250×. (b) Variation of hardness with depth in the quenched and tempered More
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Published: 01 March 2006
Fig. 3 Depth of decarburization of a cold-worked steel in a fluidized bed in air. Source: Ref 1 More