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superlattice structures

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001183
EISBN: 978-1-62708-223-5
... the structure of a heat treated alloy steel ( Figs. 2 ). A strongly fissured and therefore brittle alloy zone was in contact with the steel. The existence of a superlattice phase Fe 3 Al was probable. At the outer edge metal was adhering at some places that was roughened during polishing and therefore was soft...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... of the microstructure. In rolling contact, the surface does not show a catastrophic movement; it remains as the original structure. For example, an unetched, polished sample taken near the origin of a subsurface fatigue crack ( Fig. 6 ) very clearly shows undisturbed black oxides at the surface. The subsurface cracking...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... structure ( Ref 99 – 104 ). This microstructure increases the toughness and thereby contamination resistance of the bearing. Some tests have shown this microstructure to also increase subsurface fatigue life due to the increased toughness ( Ref 18 ). As previously discussed, compressive residual...