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surface embrittlement

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Published: 01 January 2002
Fig. 3 Effect of surface embrittlement from varied UV exposure times on creep rupture behavior of polyethylene at 80°C (175 °F). Source: Ref 17 More
Image
Published: 15 May 2022
Fig. 3 Effect of surface embrittlement from varied UV exposure times on creep rupture behavior of polyethylene at 80 °C (175 °F). Source: Ref 22 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048757
EISBN: 978-1-62708-234-1
... and increased grain size. Hydrogen and oxygen absorption was revealed by the presence of hydrides and the shallow surface embrittlement and thus susceptibility to cracking at ambient temperatures was observed. It was concluded that the titanium tubes were embrittled due to overheating the tubes and the severe...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006867
EISBN: 978-1-62708-395-9
... embrittlement and temperature on polymer performance. brittle fracture degradation environmental stress cracking performance polymers surface embrittlement temperature POLYMERIC MATERIALS are often differentiated according to their short-term and long-term mechanical properties. The category...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0090114
EISBN: 978-1-62708-229-7
... holes' surface was not coated. Investigation supported the conclusions that the cracking at the cooling holes was due to grain-boundary oxidation and nitridation at the cooling hole surface, embrittlement and loss of local ductility of the base alloy, temperature gradient from the airfoil surface...
Image
Published: 01 January 2002
Fig. 6 Intergranular separation in an area of the surface of the hydrogen embrittlement fracture of the type 431 stainless steel mushroom-head closure of Fig. 4 and 5 . When viewed in three-dimension, the somewhat rounded separated-grain surfaces show cavities akin to dimples in appearance More
Image
Published: 01 June 2019
Fig. 3 Intergranular separation in an area of the surface of the hydrogen embrittlement fracture of the type 431 stainless steel mushroom-head closure of Fig. 4 and 5. When viewed in three-dimension, the somewhat rounded separated-grain surfaces show cavities akin to dimples in appearance More
Image
Published: 15 January 2021
Fig. 6 Intergranular separation in an area of the surface of the hydrogen embrittlement fracture of the type 431 stainless steel mushroom-head closure of Fig. 4 and 5 . When viewed in three dimension, the somewhat rounded separated-grain surfaces show cavities akin to dimples in appearance More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... Embrittlement An adverse effect of polymer degradation on plastic part performance does not require changes in the bulk of the material in that part. In many cases, it is only necessary to cause degradation in a thin surface layer of the part in order for performance to be compromised. This phenomenon has...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048634
EISBN: 978-1-62708-225-9
... of mobile hydrogen outward from the surface of the pin. After the cadmium layer was removed, the mobile hydrogen contained on the surface of the steel and in the electroplated deposit was released, and the embrittlement problem was alleviated. To prevent reoccurrence, the bright cadmium layer was stripped...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001384
EISBN: 978-1-62708-215-0
... with the work table. SEM fractography and metallographic examinations conducted on the bolt revealed hairline indications along grain facets on the fracture surface and stepwise cracking in the material, both indicating failure by hydrogen embrittlement. Similar draw-in bolts were discarded and replaced...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001335
EISBN: 978-1-62708-215-0
... performed on an embrittled section and on a section from a different lot that did not crack during forming. The failed section showed an intergranular fracture path. Examination of the fracture surfaces revealed the presence of tellurium at the grain boundaries. The source of the tellurium was thought...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001519
EISBN: 978-1-62708-223-5
... suspicion of hydrogen embrittlement. It appeared that fracture in service progressed transgranularly to produce delayed failure under dynamic loading. The pickling process used to remove heat scale was suspected to be the source of hydrogen on the surface of the bolt. The manufacturer was requested...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0091475
EISBN: 978-1-62708-225-9
.... 1 Two views of a fracture from hydrogen embrittlement of a type 431 stainless steel mushroom-head closure. This is not typical; HE cracking on cylinders is usually circumferential. The fracture surface displayed areas of both transgranular cleavage, as shown in the stereo pair of Fig. 2...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001101
EISBN: 978-1-62708-214-3
... plating Chemical processing equipment Chemical processing industry Regenerators Valves Cadmium-coated steel Surface treatment related failures Hydrogen damage and embrittlement Background Several cadmium-plated carbon steel socket head cap screws failed. Applications The cap screws...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0048830
EISBN: 978-1-62708-228-0
... blisters were observed on the inner surface near the weld after attempts had been made to repair the crack. Fig. 1 Vessel made of ASTM A204, grade C, steel that failed as the result of hydrogen embrittlement. (a) Portion of tank; Detail A shows locations of cracks, at welds joining shell to lower...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... include ( Ref 1 ): Hydrogen pressure theory Reduced surface energy (surface adsorption) theory Decohesion theory Enhanced plastic flow theory Decarburization (hydrogen attack) Hydride formation The pressure theory assumes that embrittlement is caused by the pressure exerted...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... a hydrogen-damage failure is caused by hydrogen embrittlement or hydrogen-induced blistering, the crack typically originates in the interior of the part or very close to the metal surface. In metals of relatively low strength and hardness and in high-strength metals that are not subjected to significant...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
... Cu from electrical resistance-heating contacts Deposition from aqueous environments after corrosion/erosioncorrosion of embrittling metals, e.g. Cu, Pb Airborne ZnS (near mining facilities) reduced to Zn on hot surfaces The most common embrittling metals for some structural alloys...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048630
EISBN: 978-1-62708-217-4
... was specified for a sample quantity of bolts from each lot. Electroplating Hydrogen embrittlement Cadmium-plated steel Surface treatment related failures Hydrogen damage and embrittlement Two clevis-head self-retaining bolts used in the throttle-control linkage of a naval aircraft failed...