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hot tearing

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089551
EISBN: 978-1-62708-218-1
... Abstract A sand-cast medium-carbon steel heavy-duty axle housing, which had been quenched and tempered to about 30 HRC, fractured after almost 5000 h of service. Investigation (0.4x magnification) revealed that the fracture had been initiated by a hot tear that formed during solidification...
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Published: 01 January 2002
Fig. 61 SEM of hot tear in region A of Fig. 60 More
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Published: 01 January 2002
Fig. 62 SEM of hot tear in region B of Fig. 60 More
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Published: 01 December 1992
Fig. 4 SEM micrographs of area A in Fig. 3(a) , showing hot tear casting defect. (a) 41×. (b)126×. More
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Published: 01 December 1992
Fig. 5 SEM micrographs of area B in Fig. 3 , showing another hot tear casting defect. (a)37.8×. (b)126×. More
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Published: 01 December 1992
Fig. 7 EDX spectrum obtained in a hot tear zone of the fracture surface, using a windowless detector and a 20 kV electron beam. More
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Published: 01 December 1992
Fig. 8 EDX spectrum obtained in a hot tear zone of the fracture surface, using a windowless detector and a 5 kV electron beam. More
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Published: 30 August 2021
Fig. 40 Scanning electron microscopy of hot tear in region A of Fig. 39 More
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Published: 30 August 2021
Fig. 41 Scanning electron microscopy of hot tear in region B of Fig. 39 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047586
EISBN: 978-1-62708-236-5
... typical of exposure to air when very hot. Several additional subsurface cracks, typical of hot tears, were observed in and near the weld. There had been too much local heat input in making the repair weld. The result was localized thermal contraction and hot tearing. The cracking of the repair weld...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001029
EISBN: 978-1-62708-214-3
... originated in hot tear locations in the castings. Microprobe analysis of fracture surfaces in the hot tear region indicated a much higher silicon-to-aluminum ratio compared with the overload fracture area. No microstructural anomalies related to the failure were found during metallographic examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001204
EISBN: 978-1-62708-219-8
... made from Cr-Mo steel (Material No. 1.7225) according to DIN 17200. It was found that the bolts were not made from a suitable alloy steel, but were welded together from two unsuitable steels, one of which lacked sufficient strength. The austenitic weld seams showed hot tears and were not welded through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001665
EISBN: 978-1-62708-231-0
...” suggested that this preexisting fracture had grown by fatigue and then, when sufficient growth had occurred, final failure occurred by brittle fracture. One possibility that was considered was that the casting had developed a “hot tear” as it was cast, and that this had gone undetected. A hot tear forms...
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Published: 01 December 1992
Fig. 1 Both sides of an as-received actuator casting. Arrow (b) indicates the hot tear cracks. More
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Published: 01 January 2002
Fig. 64 Energy-dispersive x-ray spectra (windowless detector, 20kV electron beam) for (a) hot tear zone and (b) overload fracture zone More
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Published: 30 August 2021
Fig. 43 Energy-dispersive x-ray spectra (windowless detector, 20 kV electron beam) for (a) hot tear zone and (b) overload fracture zone More
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Published: 30 August 2021
Fig. 3 Defects in selective-laser-melted (SLM) materials. (a) Porosity formed in SLM Ti-6Al-4V. (b) Balling. (c) Hot tears. Source: Ref 26 More
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Published: 01 January 2002
Fig. 14 Fracture surface of a sand-cast medium-carbon steel heavy-duty axle housing. Failure originated at a hot tear (region A), which propagated in fatigue (region B) until final fracture occurred by overload. 0.4× More
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Published: 01 January 2002
Fig. 29 Discontinuities that may be encountered in semisolid processing, (a) Surface blisters. 75×. (b) Cold shuts. 225×. (c) Nonfill. 0.5×. (d) Hot tears. 75×. (e) Shrinkage porosity. 40×. (f) Gas porosity. 100× More
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Published: 01 June 2019
Fig. 1 Fracture surface of a sand-cast medium-carbon steel heavy-duty axle housing. Failure originated at a hot tear (region A), which propagated in fatigue (region B) until final fracture occurred by overload. 0.4× More