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Ultrahigh-strength low-alloy steel

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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
.... The operators of the dragline bucket were warned against further hardfacing of these teeth. Design Stress concentration Ultrahigh-strength low-alloy steel Hydrogen damage and embrittlement A tooth used on the digging edge of a large dragline bucket ( Fig. 1 ) failed after several weeks in service...
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 Conclusions Corrective Measures Selected References...
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
... steel tooth. Given the small critical crack sizes characteristic of ultrahigh-strength materials, it is generally unwise to weld them. It is particularly inadvisable to hardface ultrahigh-strength steel parts with hard, brittle, crack-prone materials when high service stresses will be encountered...
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
... Acknowledgments References 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...
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
... 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 was observed, consistent with mild alloy segregation. The plating microstructure was typical of hard chromium plating...
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
.... , Mazhar A.A. , Fatigue behaviour of certain high-strength, low-alloy steel sheets . Met. Technol. 3 , 79 – 85 ( 1976 ) 10.1179/030716976803391665 22. Parker E.R. , Zackay V.F. , Microstructural features affecting fracture toughness of high strength steels . Eng. Fract. Mech...
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
... with very high yield strength from tempering for short times at low temperatures and lower-yield-strength steels from high-temperature tempering (at 600 to 700 °C, or 1110 to 1290 °F). In the latter, embrittlement occurs when the steel is subjected to an additional isothermal treatment near 500 °C (930 °F...
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
... for an ultrahigh-strength D6AC steel tested at a Δ K greater than 60 MPa m (54.6 ksi in . ). The crack advance per cycle is very rapid ( Fig. 6a ). With transmission electron microscopy replicas, the microscopic growth process in Fig. 6(b) was shown to be elongated shear dimples...
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
... of medium-carbon alloy steel, quenched and tempered to a hardness of 32 to 38 HRC and a minimum tensile strength of 1034 MPa (150 ksi). Fig. 7 Drive-line assembly that failed because of fatigue fracture of two cap screws. The screws were made of modified 1035 steel instead of the specified medium...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006771
EISBN: 978-1-62708-295-2
... of samples that are permissible for analysis. Reducing the temperature of a sample will decrease the volatility of the material, allowing it to remain intact under ultrahigh-vacuum conditions. The electrical conductivity of the sample may also be of concern. Modern surface analysis equipment uses low...
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
... provides clues as to whether the material is high strength (smoother) or low strength (rougher) and whether fracture occurred as a result of cyclic loading. The surfaces from fatigue crack growth are typically smoother than monotonic overload fracture areas. The monotonic overload fracture of a high...
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
... clues as to whether the material is high strength (smoother) or low strength (rougher) and whether fracture occurred as a result of cyclic loading. The surfaces from fatigue crack growth are typically smoother than monotonic overload fracture areas. The monotonic overload fracture of a high-strength...
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
... . Prentice-Hall , 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...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... specimens against 17-4 PH stainless steel counterfaces (impact stress: 18.6 MPa, or ksi). Source: Ref 23 Specimen stiffness affects the wear rate of both impacting bodies ( Ref 24 ). As shown in Fig. 14 , the short, stiff specimen (an ultrahigh-strength steel) wore the counterface (a stainless...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003534
EISBN: 978-1-62708-180-1
... that the negative ion spectrum shows little evidence for the stainless steel matrix material, because the transition metals have relatively poor negative secondary ion yields. Organic contaminants include general low-mass hydrocarbon fragments; PDMS at masses 59, 60, 75, 119, 149, and 223; and fatty carboxylates...
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
... 84. Krupin Y.A. and Kiselev I.K. , On Statistical Properties of the Estimations of Fractal Dimensions of the Corrosion Fracture Surfaces of Low Alloy High-Strength Steel , Scr. Metall. Mater. , Vol 24 , 1990 , p 967 – 972 10.1016/0956-716X(90)90495-3 85. Ray K.K...