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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
...-plated AISI 8740 alloy steel fasteners that failed by hydrogen embrittlement. See also Fig. 2 . Fig. 2 Scanning electron micrograph of fracture surface of fasteners shown in Fig. 1 . 880× Selected Reference • Hydrogen Damage and Embrittlement , Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047939
EISBN: 978-1-62708-225-9
... Abstract Rough operation of the roller bearing mounted in an electric motor/gearbox assembly was observed. The bearing components made of low-alloy steel (4620 or 8620) and the cup, cone and rollers were carburized, hardened and tempered. The contact surfaces of these components (cup, cone...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089534
EISBN: 978-1-62708-223-5
... Abstract The specially designed sand-cast low-alloy steel jaws that were implemented to stretch the wire used in prestressed concrete beams fractured. The fractures were found to be macroscale brittle and exhibited very little evidence of deformation. The surface of the jaws was disclosed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0091009
EISBN: 978-1-62708-235-8
..., immediately prior to heat treatment. Multiple-pass arc welds secured the carbon-steel flanges to the Ni-Cr-Mo-V alloy steel tubes. Investigation (visual inspection, metallographic analysis, and evaluation of the fabrication history and the analysis data) supported the conclusion that the tube failed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048795
EISBN: 978-1-62708-220-4
...Abstract Abstract A large pressure vessel designed for use in an ammonia plant failed during hydrostatic testing. It was fabricated from ten Mn-Cr-Ni-Mo-V steel plates which were rolled and welded to form ten cylindrical shell sections and three forgings of similar composition. The fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0047817
EISBN: 978-1-62708-233-4
...Abstract Abstract A pushrod made by inertia welding two rough bored pieces of bar stock installed in a mud pump fractured after two weeks in service. The flange portion was made of 94B17 steel, and the shaft was made of 8620 steel. It was disclosed by visual examination that the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048052
EISBN: 978-1-62708-224-2
...Abstract Abstract Several thousands of new 16 mm diam alloy steel sling chains used for handling billets failed by chain-link fractures. No failures were found to have occurred before delivery of the new chains. It was observed that the links had broken at the weld. It was found that all...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001813
EISBN: 978-1-62708-241-9
...Abstract Abstract Graphitization, the formation of graphite nodules in carbon and low alloy steels, contributes to many failures in high-temperature environments. Three such failures in power-generating systems were analyzed to demonstrate the unpredictable nature of this failure mechanism...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0089530
EISBN: 978-1-62708-219-8
... low-alloy steel conforming to ASTM A 148, grade 150-125. The crack was found to have originated along the lower surface initially penetrating a region of shrinkage porosity. It was observed that cracking then propagated in tension through sound metal and terminated in a shear lip at the top of the eye...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001256
EISBN: 978-1-62708-218-1
...Abstract Abstract There was a large incidence of surface defects on the crank pins and journals and other areas of crank shafts of a high power automotive engine. The steel used was a Cr-Mo type of nitriding steel. Metallographic observations conclusively proved that the defective areas were...
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
... at the junction of the head and shank. The nuts were, theoretically, installed fingertight. Fig. 1 Cadmium-plated alloy steel self-retaining bolts that fractured because of hydrogen damage. (a) Fractured and unused intact bolt. (b) Fractured bolt; brittle fracture surface is indicated by A and B. (c...
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
...Abstract Abstract A vessel made of ASTM A204, grade C, molybdenum alloy steel and used as a hydrogen reformer was found to have cracked in the weld between the shell and the lower head. Six samples from different sections were investigated. The crack was found to be initiated at the edge...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001337
EISBN: 978-1-62708-215-0
...-alloy steels with chromium additions such as ASTM A213 Grade T11 or T22, which are resistant to graphitization damage. References References 1. Metals Handbook, Vol. 11: Failure Analysis and Prevention , 9th ed. , ASM , Metals Park, OH , 1986 , p 603 – 614 . 2. Emerson R.W...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048117
EISBN: 978-1-62708-235-8
... of only one is discussed. Nonmetallic inclusions Shrinkage pipe Valve springs 6150 (Chromium-vanadium alloy steel UNS G61500 Fatigue fracture Metalworking-related failures ...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001072
EISBN: 978-1-62708-214-3
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001099
EISBN: 978-1-62708-214-3
...Indentation hardness of alloy steel cap screws Table 1 Indentation hardness of alloy steel cap screws Lot Region Hardness (a), Approximate tensile strength (b) HRC MPa ksi Original screw Center 43 1380–1450 200–210  (fractured) Edge 43 1380–1450 200–210...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001093
EISBN: 978-1-62708-214-3
...—that is, during heat treating but before conventional quenching and subsequent cadmium plating. Zone 2 is characterized by equiaxed dimples, a common feature of ductile tension overload (final stage of fracture). Dimensions of the alloy steel bolt (MSD 21250-10070) were 15.9 mm (0.625 in.) diam, 111 mm (4.375...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001119
EISBN: 978-1-62708-214-3
... compression springs were returned to the manufacturer after failing in service well short of the component design life. Spring design specifications required conformance to SAE J157, “Oil Tempered Chromium Silicon Alloy Steel Wire and Springs.” Each spring was installed in a separate heavy truck engine...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001609
EISBN: 978-1-62708-229-7
... Fig. 5 Hardness vs. tempering temperature, Alloy 410 tempered for 2 h 17 Abstract Abstract Alloy 430 stainless steel tube-to-header welds failed in a heat recovery steam generator (HRSG) within one year of commissioning. The HRSG was in a combined cycle, gas-fired, combustion turbine...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001260
EISBN: 978-1-62708-235-8
... Abstract One percent Cr-Mo low alloy constructional steel is widely used for high tensile applications, e.g., for manufacture of high tensile fasteners, heat treated shafts and axles, for automobile applications such as track pins for high duty tracked vehicles etc. The steel is fairly through...