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planar dimpled facets

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
... the low sulfur steel crankshaft contained planar dimpled facets along separated grain boundaries with a small spherical manganese sulfide precipitates within each dimple. In contrast, planar dimpled facets along separated grain boundaries of impact fractures from the ultra-low sulfur crankshaft steel...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
... samples revealed an intercrystalline/intergranular fracture appearance with grain facets, as opposed to dimpled ruptures, which is again a hallmark of HIC. However, it is pointed out that the fracture mode is often intergranular in low Ni stainless steels due to prevailing planar slip mechanism (as...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... spaced points on the profile. The profile is then approximated by a series of straight-line segments joining the adjacent points. Planar fracture profiles can be also generated by sectioning replicas of the fracture surface ( Ref 63 ). In this manner, the fracture surface itself can be...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... fractography features Mark/Indication Implication Dimpled fracture surface Ductile overload fracture at this location Faceted fracture surface Brittle cleavage fracture Possible SCC fracture May be low Δ K fatigue Intergranular with smooth grain boundaries Likely either...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... uniquely characterized by dimpled fracture surfaces due to microvoid coalescence. Microscale brittle fractures are characterized by either cleavage (transgranular brittle fracture) or intergranular embrittlement. References 1. Ross R.J. and Boit C...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... commented that dimple rupture occurs without void nucleation in alloys that deform by planar slip ( Ref 36 ). There has also been a report of void nucleation without particle debonding in an aluminum-lithium alloy ( Ref 31 ). In this alloy, a variation in particle size was present, ranging from very...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... noted that dimple rupture occurs without void nucleation in alloys that deform by planar slip ( Ref 36 ). There has also been a report of void nucleation without particle debonding in an aluminum-lithium alloy ( Ref 31 ). In this alloy, a variation in particle size was present, ranging from very...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... favored in materials that exhibit planar slip and in some alloys strengthened by coherent precipitates (such as age-hardened aluminum) and under fluctuating loads low enough that the cyclic fracture process zone is small relative to a characteristic microstructural scale parameter. Hence, stage I...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... due to a corrosive attack. Transgranular fractures resulting from environmentally assisted failure mechanisms exhibit larger, more planar features that often have a feathery, faceted appearance. Figure 11(d) shows an example of a classic transgranular brittle fracture caused by stress-corrosion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
...-defined striations resulted from the planar slip characteristic of stainless steels. 810× Fig. 15 Fatigue fracture in 18% Ni, grade 250, maraging steel tested at room temperature. (a) Extensive secondary cracking can be seen in a lower-magnification fractograph. 126×. (b) The cracking is clearly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... coalescence in dimple rupture. Fracture surfaces of some stress-rupture failures exhibit both TG and IG fracture paths. In such instances, it is usually found that the TG fractures were initiated by prior IG fissures that decreased the cross-sectional area and raised the stress. Intergranular creep...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1