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hydrogen-embrittlement fracture

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Published: 01 June 2012
Fig. 33 SEM image of hydrogen embrittlement fracture morphology in hydrogen-charged Nitinol wire More
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Published: 01 January 2002
Fig. 4 Two views of a fracture from hydrogen embrittlement of a type 431 stainless steel mushroom-head closure (Example 1). This is not typical; HE cracking on cylinders is usually circumferential. More
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Published: 01 January 1987
Fig. 789 Fracture caused by hydrogen embrittlement in threaded specimen of AISI H11 tool steel (same heat treatment and tensile strength as in Fig. 786 ). Hydrogen impregnation was by plating. Fracture occurred before the full sustained load could be applied and progressed around More
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Published: 15 January 2021
Fig. 4 Two views of a fracture from hydrogen embrittlement of a type 431 stainless steel mushroom-head closure. This is not typical; hydrogen embrittlement cracking on cylinders is usually circumferential. More
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000616
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that covers nickel-base superalloys. The fractographs display the following: hydrogen-embrittlement fracture; segment of a fractured second-stage gas-turbine wheel; gas-producer turbine rotor cast; dendritic stress-rupture fracture surface...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
...-type spring, railroad rail, and seamless drill pipe. driveshaft fatigue crack propagation fatigue fracture fractograph grain boundaries high-carbon steel hydrogen embrittlement microstructure springs Fig. 245 Surface of a fatigue fracture that occurred, after 732 h of service...
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Published: 01 January 1987
Fig. 46 Examples of hydrogen-embrittled titanium alloys. (a) Hydrogen embrittlement fracture in a Ti-8Al-1Mo-1V alloy in gaseous hydrogen. Note crack-arrest marks. Source: Ref 137 . (b) Cleavage fracture in hydrogen-embrittled Ti-5Al-2.5Sn alloy containing 90 ppm H. Source: Ref 141 More
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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
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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
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Published: 01 January 1987
Fig. 791 Higher-magnification view of the area in the rectangle in Fig. 790 . Very fine dimples and large dimples are both present. A few features resemble cleavage facets, but the grain-boundary parting expected in hydrogen-embrittlement fractures is absent. SEM, 10,000× More
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Published: 01 January 2002
Fig. 5 Transgranular cleavage in an area of the surface of the hydrogen embrittlement fracture of the type 431 stainless steel mushroom-head closure shown in Fig. 4 . See also Fig. 6 . When viewed in three-dimension, this stereo pair shows a massive ridge running from top to bottom More
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Published: 15 January 2021
Fig. 5 Transgranular cleavage in an area of the surface of the hydrogen embrittlement fracture of the type 431 stainless steel mushroom-head closure shown in Fig. 4 . See also Fig. 6 . When viewed in three dimension, this stereo pair shows a massive ridge running from top to bottom More
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Published: 01 January 1987
Fig. 45 Examples of hydrogen-embrittled steels. (a) Cleavage fracture in a hydrogen-embrittled annealed type 301 austenitic stainless steel. Source: Ref 98 . (b) intergranular decohesive fracture in an AISI 4130 steel heat treated to an ultimate tensile strength of 1281 MPa (186 ksi More
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Published: 01 January 1987
Fig. 44 Quasi-cleavage fracture in a hydrogen-embrittled AISI 4340 steel heat treated to an ultimate tensile strength of 2082 MPa (302 ksi). Source: Ref 138 More
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Published: 01 January 1987
Fig. 49 Effect of heat treatment on the fracture appearance of a hydrogen-embrittled low-copper 7050 aluminum alloy. (a) Transgranular cleavagelike fracture in a peak-aged specimen. (b) Combined intergranular decohesion and transgranular cleavagelike fracture in an underaged specimen. Source More
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Published: 01 January 1987
Fig. 792 Another view of the fracture surface in hydrogen-embrittled AISI H11 tool steel shown in Fig. 789 . The surface consists almost entirely of dimpled rupture. A few facets are present and suggest possible local cleavage. See also Fig. 793 . SEM, 4000× More
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
... of hydrogen embrittlement discussed include internal reversible hydrogen embrittlement, hydrogen environment embrittlement, and hydrogen reaction embrittlement. The article describes preservice and early-service fractures of commodity-grade steel components suspected of hydrogen embrittlement. Some prevention...
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
... embrittlement. Its unique aspect is the delayed nature of the fractures; that is, after a specimen is charged with hydrogen, fracture does not occur instantly but only after the passage of a certain amount of time. This time-dependent nature (incubation period) for embrittlement by hydrogen is also why...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000613
EISBN: 978-1-62708-181-8
...-overload fractures, impact fractures, microstructure, quench cracking, brittle-in-service failure, hydrogen embrittlement, stress-corrosion cracking, and grain-boundary cracking of tool steel components. These components include diesel engine injector plungers, rivet-heading tools, circular saw blades...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003667
EISBN: 978-1-62708-182-5
... test slow strain rate tensile test stress wedge-opening load test HYDROGEN EMBRITTLEMENT of metals is an old, frequently encountered, and often misunderstood phenomenon. It is most commonly thought to occur by subcritical crack growth, often producing time-delayed fractures in production parts...