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stepwise microcracking

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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.c9001839
EISBN: 978-1-62708-241-9
... surfaces revealed a brittle intercrystalline mode of fracture with typical manifestations of clear grain facets. Branched and discrete stepwise microcracks were also found along with unusually high levels of residual hydrogen. Mechanical tests revealed a marked loss of tensile ductility in the defective...
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Published: 01 December 2019
Fig. 3 Light optical micrographs of polished, unetched coil sample No. 1 showing branched and discrete stepwise microcracking indicative of hydrogen-induced failure More
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Published: 01 December 2019
Fig. 4 Light optical micrographs of polished, unetched coil sample No. 2 showing branched and discrete stepwise microcracking indicative of hydrogen-induced failure More
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Published: 01 December 2019
Fig. 5 Secondary electron images of polished, unetched coil sample No. 1 showing branched and discrete stepwise microcracking with jagged crack morphologies and crystalline fracture appearance More
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Published: 01 December 2019
Fig. 6 Secondary electron images of polished, unetched coil sample No. 2 showing branched and discrete stepwise microcracking with jagged crack morphologies and crystalline fracture appearance More
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Published: 01 December 2019
Fig. 7 Light optical micrographs of 10% oxalic acid etched coil sample No. 1 revealing pronounced intergranular cracking, stepwise microcracking, grain dropping, and intergranular ditching in austenite microstructure of low nickel stainless steel More
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Published: 01 December 2019
Fig. 8 Light optical micrographs of 10% oxalic acid etched coil sample No. 2 revealing pronounced intergranular cracking, stepwise microcracking, grain dropping, and intergranular ditching in austenite microstructure of low nickel stainless steel More
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Published: 01 December 2019
Fig. 9 Scanning electron images of 10% oxalic acid etched coil sample No. 1 revealing pronounced intergranular cracking, stepwise microcracking, grain dropping, and intergranular ditching in austenite microstructure of low nickel stainless steel More
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Published: 01 December 2019
Fig. 10 Scanning electron images of 10% oxalic acid etched coil sample No. 2 revealing pronounced intergranular cracking, stepwise microcracking, grain dropping, and intergranular ditching in austenite microstructure of low nickel stainless steel More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001193
EISBN: 978-1-62708-229-7
... as fatigue cracks produced by vibration in the operation of the turbine as a result of steplike growing of microcracks could not be deduced from the fracture surfaces. Microfractography showed that the cracks developed in stages. Brazing Residual stress Steam turbines X20Cr 13 Joining-related...
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
... -ratios and for irregular loading, the reaction to complex microcracks, the response to single overloads, the crack closure effects, and the behavior under multiaxial loading still provide significant challenges. Reference 11 and Fatigue and Fracture , Volume 19 of the ASM Handbook , 1996, cover...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006940
EISBN: 978-1-62708-395-9
... or strain amplitude). From a thermodynamic point of view ( Ref 39 ), part of the mechanical work done during cyclic loading is spent on irreversible molecular processes ( Ref 40 ), leading to microscopic deformations such as crazes, shear bands, voids, and microcracks. The other part of the mechanical work...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... of composition can be accomplished by stepwise progressive removal of material from a surface using an ion beam, normally of argon ions, followed by Auger analysis. Secondary Ion Mass Spectroscopy Secondary ion mass spectroscopy techniques are used to detect secondary ions created by the interaction...
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
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
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2