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martensite

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410063
EISBN: 978-1-62708-265-5
... The formation of martensite is characterized by its athermal transformation kinetics, crystallographic features, and development of fine structure. This chapter describes the diffusionless, shear-type transformation of austenite to martensite and how it affects the morphology and microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560283
EISBN: 978-1-62708-291-4
... Abstract This chapter describes the effects that can be observed by light microscopy when a steel in the hardened condition, consisting of martensite and possibly some retained austenite, is heated at subcritical temperatures. It includes micrographs that illustrate the effect of carbide...
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Published: 01 September 2008
Fig. 11 Martensite morphology. (a) Lath martensite. (b) Plate martensite. Source: Ref 30 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700127
EISBN: 978-1-62708-279-2
... Abstract Martensitic steels are produced by quenching carbon steel from the austenite phase into martensite. This chapter provides information on the composition, microstructures, processing, deformation mechanisms, mechanical properties, hot forming, tempering, and special attributes...
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Published: 01 August 2018
Fig. 13.10 Detail from Fig. 13.9 . Ferrite (light) and martensite. The martensite areas are easier to observe. In this case, in the optical microscope retained austenite cannot be identified. Etchant: nital 3%. Courtesy of C. S. Viana, EEIMVR-UFF, Volta Redonda, RJ, Brazil. Source: Ref 5 More
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Published: 01 November 2012
Fig. 10 Fracture toughness and martensite twin density as a function of martensite start temperature for an Fe-Cr-C steel. Source: Ref 1 More
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Published: 31 December 2020
Fig. 28 Light micrographs of morphologies of martensite. (a) Lath martensite in low-carbon steel (0.03C-2.0Mn, wt%) at original magnification: 100×. (b) Plate martensite in matrix of retained austenite in a high-carbon (1.2 wt% C) steel at 1000×. (c) Mixed morphology of lath martensite More
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Published: 01 October 2011
Fig. 9.13 Morphology of (a) lath martensite and (b) plate martensite More
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Published: 01 October 2011
Fig. 14.12 Martensite (β′) in aluminum bronze. (a) Martensite needles in Cu-11.8Al alloy homogenized at 800 °C and water quenched. (b) Martensite running from bottom right to top left. Cu-11.8Al alloy is heated to 900 °C (1650 °F), held 1 h, then water quenched. Source: Ref 14.6 More
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Published: 01 May 2018
FIG. 4.5 Martensite microstructure. The transformation of austenite to martensite was not understood until much additional research was performed. More
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Published: 01 January 2015
Fig. 17.25 Change in martensite lath boundary area per unit volume in martensite of an Fe-0.20% C alloy tempered at 400 °C (750 °F) for various times. Source: Ref 17.40 More
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Published: 01 December 1996
Fig. 2-11 Examples of the microstructure of martensite. (a) Lath martensite in a low-carbon alloy steel (0.03% C, 2% Mn); (b) Plate martensite (marked P) and lath martensite in medium-carbon (0.57% C) steel; (c) Plate martensite in a high-carbon (1.2% C) steel. Matrix is retained austenite More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310123
EISBN: 978-1-62708-286-0
... Abstract This chapter discusses the metallurgy, phase structure, thermal processing, and applications of martensitic stainless steels. The phenomenon of martensite formation is explained. A table listing the compositions of martensitic stainless steels is also presented. martensitic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860295
EISBN: 978-1-62708-348-5
...Typical crystallographic and morphological parameters of common martensitic transformations. Table 9.1 Typical crystallographic and morphological parameters of common martensitic transformations. Alloy System Habit Plane a Orientation Relationship b Parent/Product Structure...
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Published: 01 November 2007
Fig. 10.5 Impingement of martensite plates leading to quench cracks (QC) More
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Published: 01 November 2007
Fig. 12.9 Effect of adding bainite to martensite on ductility at constant hardness levels in plain carbon steels. Source: Ref 12.17 More
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Published: 01 August 2013
Fig. 7.4 The martensite unit cell. Ref 7.4 More
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Published: 01 August 2013
Fig. 7.6 The hardness of martensite increases with carbon content. Note that the hardness extrapolates to the hardness of ferrite at 0% C. The hardnesses of pearlitic and spheroidized structures are shown for comparison. Source: Ref 7.5 More
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Published: 01 August 2018
Fig. 10.69 Superficial region of the bearing part in Fig. 10.68 . Martensite with spheroidized carbides. Etchant: nital 3%. Courtesy of D. Lober. Source: Ref 26 More
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Published: 01 August 2018
Fig. 10.93 Example of a cyanided layer, without a transition zone. Martensite in the region close to the part surface (to the right). In the part center, martensite and ferrite. Etchant: nital. More