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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... Abstract This article describes the general root causes of failure associated with wrought metals and metalworking. This includes a brief review of the discontinuities or imperfections that may be the common sources of failure-inducing defects in bulk working of wrought products. The article...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
... principles, the manufacturing and materials engineer must first decide whether the machining process has altered surface layers. The application of surface integrity principles generally adds cost to the manufacturing and metalworking processes; therefore, surface monitoring and damage alteration prevention...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0089429
EISBN: 978-1-62708-223-5
... Abstract The failure of a high speed steel twist drill which caused injury to the user was investigated thoroughly to settle a legal suit. The drill was being used to remove a stud that broke in the vertical wall of a metalworking machine (upsetter) after drilling a pilot hole. The drill had...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... the SCC, which occurs due to welding, metalworking process, and stress concentration, including options for investigation and corrective measures. It describes the sources of stresses in service and the effect of composition and metal structure on the susceptibility of SCC. The article provides...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... Abstract The primary purpose of this article is to describe general root causes of failure that are associated with wrought metals and metalworking. This includes a brief review of the discontinuities or imperfections that may be common sources of failure-inducing defects in the bulk working...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048156
EISBN: 978-1-62708-235-8
... 6150 UNS G61500 Metalworking-related failures The face of a 6150 flat spring was under tensile stress. Although small flaws were visible on the surface ( Fig. 1 ), the failure began at the dark spot on the edge, where roughness resulted from shearing during the blanking operation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001541
EISBN: 978-1-62708-235-8
... proved the crack to be a forging defect called a cold shut. Because defects of this type are usually detected when the raw forging is inspected, this occurrence was considered to be an isolated instance. Cold shuts Cracking (fracturing) Forgings 7075-T6 UNS A97075 Metalworking-related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0047158
EISBN: 978-1-62708-226-6
..., and the inspection of the finished product will help detect obscure seams. Cracking (fracturing) Forceps Forgings Seams Stainless steel Metalworking-related failures The pointed ends of several stainless steel forceps split or completely fractured where split portions broke off ( Fig. 1 ). All...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048128
EISBN: 978-1-62708-225-9
... steel Surface treatment related failures Metalworking-related failures Figure 1 shows light streaks arranged in a diagonal direction on the wire surface. The streaks are parallel to the wire axis. A darker depressed area is visible between the streaks and below the center of the fractograph...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001195
EISBN: 978-1-62708-227-3
... to fatigue by the notch effect of coarse scale-filled folds formed during forging. Connecting rods Forging defects Steel Metalworking-related failures Fatigue fracture The connecting rod was broken in two places at the small end. The general view of the reassembled pieces in Fig. 1 shows...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048787
EISBN: 978-1-62708-235-8
... at a lower temperature to avoid formation of ferrite streaks. Cracking (fracturing) Fire extinguishers Overheating Spinning (metals) 1541 UNS G15410 Metalworking-related failures The top of a fire-extinguisher case ( Fig. 1a ) was closed by spinning. The case was made from 1541 steel tubing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048131
EISBN: 978-1-62708-225-9
... in the load test due to the split wire. The reason for the condition was interpreted to be overdrawing which resulted in intense internal strains, high circumferential surface tension, and decreased ductility. Ductility Strain Surface tension Wire drawing Spring steel Metalworking-related failures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0047154
EISBN: 978-1-62708-223-5
... fissures at the fold zones. Cracking (fracturing) Folds Forgings Fe-0.4C-0.34Cr Metalworking-related failures A head of a socket spanner made of heat-treated 0.40C-0.34Cr steel cracked in service. One half of the head, longitudinally sectioned, is shown in Fig. 1(a) in the as-received...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0047151
EISBN: 978-1-62708-227-3
.... No recommendations were made. Connecting rods Folds Forgings Carbon steel Metalworking-related failures Fatigue fracture A motorboat-engine connecting rod forged from carbon steel fractured in two places and cracked at the small end during service. The locations of the fracture surfaces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001262
EISBN: 978-1-62708-224-2
... that the real damage was done during the heat-up forging (drop-forging) and could not be removed during heat-treatment. Chains Cracking (fracturing) Drop forgings Overheating 30CrMoV 9 Metalworking-related failures A chain link which was part of the hoisting mechanism of a drop hammer broke...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001183
EISBN: 978-1-62708-223-5
... of copper, nickel, and cobalt. A steel of similar composition, X38Cr-MoV5 1 (W-No. 2343) was used for hot working tools. The sliver originated from a damaged press tool. Hot working Impurities Studs Aluminum Metalworking-related failures In a continuously cast aluminum press stud two small...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001456
EISBN: 978-1-62708-229-7
... an internal plug. The diam of this portion of the tube was reduced by local collapse and folding of the section rather than by longitudinal extension of the tube itself. Defects Optical microscopy Superheaters Tubemaking Steel tube Metalworking-related failures Corrosion fatigue A tube...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0046182
EISBN: 978-1-62708-218-1
... surfaces before machining and before putting the part into service. Connecting rods Forgings Nonmetallic inclusions 15B41 UNS H15411 Fatigue fracture Metalworking-related failures A connecting cap ( Fig. 1a ) from a truck engine fractured after 65,200 km (40,500 miles) of service. The cap...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047161
EISBN: 978-1-62708-235-8
... environment, such a surface flaw can become the initiating site for a fatigue crack or a corrosion-related failure. Cracking (fracturing) Forgings Seams Shafts (power) Surface defects 4130 UNS G41300 Metalworking-related failures Routine magnetic-particle inspection revealed crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001194
EISBN: 978-1-62708-235-8
... the influence of tensile stresses that arose during bending. This phenomenon is known as “solder brittleness.” Bending Boiler tubes Brittleness Overheating 15Mo 3 Metalworking-related failures A seamless hot-drawn boiler tube NW 300 of 318 mm O. D. and 9 mm wall thickness made of steel 15 Mo 3...