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Martensite

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047566
EISBN: 978-1-62708-235-8
... stainless steel filler metal to form a fillet between the handle and the cover. The structure was found to contain a zone of brittle martensite in the portion of the weld adjacent to the low-carbon steel handle; fracture had occurred in this zone. The brittle martensite layer in the weld was the result...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047694
EISBN: 978-1-62708-219-8
... martensite present in the weld area after the heat treatment. The test failures of the AISI 1080 steel wire butt-welded joints were due to martensite produced in cooling from the welding operation that was not tempered adequately in postweld heat treatment, and to poor wire-end preparation for welding...
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Published: 01 June 2019
Fig. 7 Optical micrographs of the cup portion showing (a) tempered martensite in the case region, (a) tempered martensite and some ferrite (light) in the core More
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Published: 01 June 2019
Fig. 8 Optical micrographs of failed portion showing (a) tempered martensite in the case region, (a) tempered martensite and some ferrite (light) in the core More
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Published: 01 June 2019
Fig. 3 Structure of the steel after the heat treatment (tempered martensite), etched with Nital. 200 × More
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Published: 01 June 2019
Fig. 4 Microstructure of the damaged area, reformed austenite and martensite. Microhardness 924 HV. 400 × More
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Published: 01 December 1992
Fig. 7 Representative microstructures (quenched and tempered martensite) of the cap screws. Nital etch. (a) 126×. (b) 504×. More
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Published: 01 December 1992
Fig. 2 Microstructure of the tie rod. Tempered martensite with spheroidized carbide. 250×. More
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Published: 01 December 1992
Fig. 8 Microstructure of “representative” P-110 tempered martensite. 324× More
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Published: 01 December 1992
Fig. 11 Higher-magnification view of untempered martensite shown in Fig. 10 . 2% nital etch. 315×. More
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Published: 01 December 1992
Fig. 12 Fine, tempered martensite observed in core. Compare with coarse, untempered martensite in Fig. 11 . 2% nital etch. 315×. More
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Published: 01 December 1992
Fig. 10 Microstructure near weld joint. Structure of martensite and retained austenite. 5% nital etch. 1000×. More
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Published: 01 December 1992
Fig. 11 Microstructure opposite weld joint. Structure is tempered martensite. 5% nital etch. 1000×. More
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Published: 01 December 1992
Fig. 6 Crack initiation site, showing untempered martensite. More
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Published: 01 December 1992
Fig. 9 Microstructure of the spindle, showing tempered martensite with some ferrite. Nital etch, 100×. More
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Published: 01 December 1993
Fig. 7 Representative micrograph of microstructure showing tempered martensite. 1% nital. 1000× More
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Published: 01 December 1993
Fig. 8 Representative tempered martensite microstructure of the pitch horn bolt. 245× More
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Published: 01 December 1993
Fig. 4 Closeup view of a pore in a matrix of tempered martensite. 378× More
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Published: 01 December 1993
Fig. 8 Microstructure of load cell, showing tempered martensite containing carbides and/or ferrite. Etched with Kelling's reagent More
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Published: 01 December 1993
Fig. 5 Higher magnification view showing tempered martensite, sulfide stringer inclusions and carbide networking. 315×. More