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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001046
EISBN: 978-1-62708-214-3
... gases to shunt across the preheater/exchanger. Metallographic examination of the plates showed that accelerated internal oxidation had been the cause of failure. Corrosion racks of candidate alloys (types 304, 309, and 316 stainless steels, Inconel 600, Inconel 625, Incoloy 800, Incoloy 825, and Inco...
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Published: 01 January 2002
Fig. 52 Torsion fracture in an aluminum-silicon alloy (alloy 319-T5). Classic brittle torsion fracture on a plane at 45° to the axis of the cylinder. Hardness, 38 HRB; tensile strength, 179 MPa (26 ksi); total elongation, 0.5%. Source: Ref 42 More
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Published: 01 January 2002
Fig. 53 Macroscale brittle torsion fracture in an aluminum-silicon alloy (alloy A356 sand casting). Hardness, 38 HRB; tensile strength, 214 MPa (31 ksi); total elongation, 4%. Source: Ref 42 More
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Published: 15 January 2021
Fig. 3 Perforation of alloy 690 incinerator liner near alloy 160 patch, showing that the original 6.35 mm (0.250 in.) wall thickness was reduced to approximately 1.27 mm (0.050 in.) or less in the general area of failure. Courtesy of U.S. Navy More
Image
Published: 15 January 2021
Fig. 52 Torsion fracture in an aluminum-silicon alloy (alloy 319-T5). Classic brittle torsion fracture on a plane at 45° to the axis of the cylinder. Hardness, 38 HRB; tensile strength, 179 MPa (26 ksi); total elongation, 0.5%. Source: Ref 43 More
Image
Published: 15 January 2021
Fig. 53 Macroscale brittle torsion fracture in an aluminum-silicon alloy (alloy A356 sand casting). Hardness, 38 HRB; tensile strength, 214 MPa (31 ksi); total elongation, 4%. Source: Ref 43 More
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 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 of the weld...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001590
EISBN: 978-1-62708-228-0
... Abstract This case study demonstrates that Alloy 601 (UNS N06601) is susceptible to strain-age cracking. The observation illustrates the potential importance of post weld heat treatment to the successful utilization of this alloy in certain applications. Steam reforming Inconel 601 UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0091538
EISBN: 978-1-62708-233-4
... Abstract Electrical contact-finger retainers blanked and formed from annealed copper alloy C65500 (high-silicon bronze A) failed prematurely by cracking while in service in switchgear aboard seagoing vessels. In this service they were sheltered from the weather but subject to indirect exposure...
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
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091350
EISBN: 978-1-62708-227-3
... Abstract Cracks occurred in a new ship hull after only three months in service. It was noted that the 5xxx series of aluminum alloys are often selected for weldability and are generally very resistant to corrosion. However, if the material has prolonged exposure at slightly elevated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... Abstract During a routine inspection, cracks were discovered in several aluminum alloy (similar to either 2014 or 2017) coupling nuts on the fuel lines of a missile. The fuel lines had been exposed to a marine atmosphere for six months while the missile stood on an outdoor test stand near...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001581
EISBN: 978-1-62708-235-8
... and 69 MPa (10 ksi) creep strength were determined. Microstructural characterization was also performed. The results indicate that a higher carbon content, alloy 304H, stainless steel supplied in the solution annealed, coarse grain, condition should be used to fabricate replacement baskets. The use...
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.process.c0046015
EISBN: 978-1-62708-235-8
... Abstract A two-section extension ladder, made from 6061-T6 aluminum alloy extrusions and stampings that were riveted together at each rung location and at the ends of side rails, broke in service after having been used at the sites of several fires by the fire department of a large city...
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 inclusions. Torsional fracture was indicated by the presence of beach marks at a 45 deg angle to the wire axis. It was established that the spring fractured by fatigue nucleated at the subsurface defect. Nonmetallic inclusions Shrinkage pipe Valve springs 6150 (Chromium-vanadium alloy steel UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047080
EISBN: 978-1-62708-235-8
... Abstract Several of the aluminum alloy 6061-T6 drawn seamless tubes (ASTM B 234, 2.5 cm (1.0 in.) OD with wall thickness of 1.7 mm (0.065 in.)) connecting an array of headers to a system of water-cooling pipes failed. The tubes were supplied in the O temper. They were bent to the desired...
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...
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× Mechanical Testing To simulate installation conditions, fasteners from several lots were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047912
EISBN: 978-1-62708-225-9
... Abstract Examination of a connecting-rod shell bearing from a six-cylinder gasoline engine was done after it was returned to the factory. Copper-lead alloy SAE 485 bonded to a low-carbon steel backing was used to make the bearing and the oil used in the engine was the recommended one...