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ultrahigh-strength steels

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Image
Published: 01 June 2019
Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . More
Image
Published: 01 June 2019
Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047428
EISBN: 978-1-62708-235-8
.... A hardfacing deposit was located at each of these sites. Visual inspection of the hardfacing deposits revealed numerous transverse cracks, characteristic of many types of hardfacing. This failure was caused by cracks present in hardfacing deposits that had been applied to the ultrahigh-strength steel tooth...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047479
EISBN: 978-1-62708-221-1
.... A hardfacing deposit was located at each of these sites. Visual inspection of the hardfacing deposits revealed numerous transverse cracks, characteristic of many types of hardfacing. This failure was caused by cracks present in hardfacing deposits that had been applied to the ultrahigh-strength steel tooth...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
... in ultrahigh-strength low-alloy steel that had been heat treated to a hardness of 555 HB. Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . Investigation Chevron marks on the fracture surface led...
Image
Published: 01 June 2019
Fig. 2 SEM micrograph showing intergranular fracture along prior-austenite grain boundaries at fracture-initiation site in ultrahigh-strength steel dragline bucket tooth. 200× More
Image
Published: 01 June 2019
Fig. 2 SEM micrograph showing intergranular fracture along prior-austenite grain boundaries at fracture-initiation site in ultrahigh-strength steel dragline bucket tooth. 200x More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001291
EISBN: 978-1-62708-215-0
... a number of areas where grinding damage had occurred and where the chromium plating had been left intact. The general microstructure was that of a low-alloy ultrahigh-strength steel, consisting of a fine-grained tempered martensite with few inclusions. Slight banding ( Fig. 8 ) of the structure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001731
EISBN: 978-1-62708-217-4
... parts. The results of the laboratory studies indicate that unusual care is necessary in the processing and fabrication of ultra-high-strength steel and in the design and maintenance of the structures in which it is used. Aircraft components Forgings Landing gear Ultrahigh strength steels 4340...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001837
EISBN: 978-1-62708-241-9
... References 1. Kishore Babu N. , Suresh M.R. , Sinha P.P. , Sarma D.S. : Effect of austenitizing temperature and cooling rate on the structure and properties of a ultrahigh strength low alloy steel . J. Mater. Sci . 41 , 2971 – 2980 ( 2006 ) 10.1007/s10853-006-6718-1 2...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... 24. Tomita Y. , Effect of hot-rolling reduction on shape of sulfide inclusions and fracture toughness of AISI 4340 ultrahigh strength steel . Metall. Trans. A 19 ( 6 ), 1555 – 1561 ( 1988 ) 10.1007/BF02674029 25. Hodge J.M. , Frazier R.H. , Boulger F.W...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
..., polystyrene; PTFE, polytetrafluoroethylene; UHMWPE, ultrahigh-molecular-weight polyethylene. Wear data for some thermoset composites under various experimental conditions Table 2 Wear data for some thermoset composites under various experimental conditions Specimen Sliding speed ( v ), m/s...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... , Engelwood Cliffs, NJ ( 1984 ) 6. Spitzig W.A. , Pellisier G.E. , Beachem C.D. , Hill M. , Warke R.R. : A Fractographic Analysis of the Relationships Between Fracture Toughness and Surface Topography in UltrahighStrength Steels . Electron Fractigraphy , pp 13 – 32 . ASTM...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... in.) in diameter and 89 mm (3 1 2 in.) in length and conformed to National Aerospace Standard 634. Chemical analysis verified that the bolt material was 4340 steel, as called for in specifications, and hardness measurements indicated that it had been heat treated to a tensile strength of 1379 MPa (200...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... and Cyclic IG Processes Cyclic microvoid and cyclic IG processes ( Ref 13 ) have also been observed. The former is shown in Fig. 6 for an ultrahigh-strength D6AC steel tested at a stress-intensity factor range (Δ K ) greater than 60 MPa m (54.6 ksi in. ). The crack advance per cycle...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... quenched and tempered to a tensile strength of 1793 to 1931 MPa (260 to 280 ksi) have been attributed to stress concentration that resulted from a large grain size in the shank. Other failures in these 25 mm (1 in.) diameter bolts, as well as in other similarly quenched-and-tempered steel bolts, were...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
..., polymethyl methacrylate; PBI, polybenzimidazole; PEEK, polyetheretherketone; PTFE, polytetrafluoroethylene; UHMWPE, ultrahigh molecular weight polyethylene; HDPE, high-density polyethylene. (a) S , tensile strength; ε, elongation to break Fig. 4 Micrographs showing surfaces of worn polymers...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
...-intensity factor range (Δ K ) values ( Ref 17 ). Cyclic Microvoid and Cyclic Intergranular Processes <xref rid="a0006777-ref18" ref-type="bibr">(Ref 18)</xref> Cyclic microvoid and cyclic IG processes have also been observed. The former is shown in Fig. 6 for an ultrahigh-strength D6AC steel tested...
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
...-strength quenched and tempered steel is significantly smoother overall than is the overload fracture of a pearlitic steel or annealed copper. Also, fracture surface roughness increases as a crack propagates, so the roughest area on the fracture surface is usually the last to fail ( Fig. 4 ) ( Ref 4...
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
... embrittlement. Macroscale fractographic features Table 1 Macroscale fractographic features Mark/Indication Implication Visible distortion Plastic deformation exceeded yield strength and may indicate instability (necking, buckling) or post-failure damage Visible nicks or gouges Possible...