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tempering

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001185
EISBN: 978-1-62708-228-0
... Abstract U-shaped leaf springs, intended to serve as spacers between oil tank floats and the inner walls of the containers, broke while being fitted, or after a short time in use, in the bend of the U. The springs were made of tempered strip steel of type C 88 with 0.84 % C, bent at room...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
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Published: 01 June 2019
Fig. 5 Hardness vs. tempering temperature, Alloy 410 tempered for 2 h 17 More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001126
EISBN: 978-1-62708-214-3
... The spontaneous breakage of tempered glass spandrel panels used to cover concrete wall panels on building facades was investigated. Between January 1988 and August 1990, 19 panel failures were recorded. The tinted panels were coated on their exterior surfaces with a reflective metal oxide and covered on the back...
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
... by metallographic examination to be case carburized. The case was found to be martensite with small spheroidal carbides while the core consisted of martensite plus some ferrite. The fracture was revealed to be related to shrinkage porosity. Tempering was revealed to be probably limited to about 150 deg C...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... that cause a part to fail during heat treatment. The article discusses the problems associated with heating and furnaces, quenching media, quenching stresses, hardenability, tempering, carburizing, carbonitriding, and nitriding as well as potential stainless steel problems and problems associated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001642
EISBN: 978-1-62708-235-8
... made, because calculations of ideal critical diameter and analysis of available hardenability data indicated that the original hardness specification could be met. There was, however, less room for process variation. The parts ended up containing temper carbides, developed heavy decarburization...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047694
EISBN: 978-1-62708-219-8
... martensite present in the weld area after the heat treatment. The test failures of the AISI 1080 steel wire butt-welded joints were due to martensite produced in cooling from the welding operation that was not tempered adequately in postweld heat treatment, and to poor wire-end preparation for welding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089572
EISBN: 978-1-62708-218-1
... and tempering to achieve better mechanical properties. Brittle fracture Casting defects Cracking (fracturing) Equilizer beams Foundry practice Gating and risering Normalizing (heat treatment) Tempering Trucks ASTM A148 grade 105-85 UNS D50850 Casting-related failures Heat treating-related...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001190
EISBN: 978-1-62708-235-8
... cases however the cracks were detected after a certain period of operation. The intercrystalline course of the cracks indicated stress-cracking as it often appears in brass after heavier cold deformation. The splitting of the couplings could have been avoided by a tempering heat treatment...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046044
EISBN: 978-1-62708-235-8
... but before tempering. Microscopic examinations of ethereal picral etched sections indicated that the cracks appeared before or during the final tempering phase of the heat treatment and that cracking had occurred while the steel was in the as-quenched condition, before its 315 deg C (600 deg F) snap temper...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047830
EISBN: 978-1-62708-235-8
... was identified around one of the folds and a fatigue crack initiated in the fold and propagated across the cheek. Properties representative of 4140 steel, quenched and tempered to a hardness of 20 to 22 HRC, were observed. Tempered bainite was revealed in the general microstructure. As a corrective measure...
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Published: 01 June 2019
Fig. 8 Microstructure of the new cylinder clamping rod showing tempered martensite structure, 3000× More
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Published: 01 June 2019
Fig. 9 Microstructure of the failed cylinder clamping rod showing tempered martensite structure, 3000× More
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Published: 01 June 2019
Fig. 2 Stress concentration factor obtained in bending a quenched and tempered steel shaft having a circular fillet More
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Published: 01 June 2019
Fig. 12 Tempered martensite microstructure of the PH 13-8 Mo stainless steel and transgranular internal crack from the shrink link cylinder wall (Vilella's etchant, ×1000). More
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Published: 01 June 2019
Fig. 3 Structure of the steel after the heat treatment (tempered martensite), etched with Nital. 200 × More
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Published: 01 June 2019
Fig. 5 Quenched and tempered martensitic structure in the zone of detonation. Voids (arrows) and unevenly etched structure are indicative of localized yielding caused by detonation. Etched in 2% nital. More
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Published: 01 June 2019
Fig. 1 Spur gear tooth, SAE 4147H, quenched and tempered to 311 HB, machined completely, induction hardened with a tooth space inductor by traversing one tooth space at a time. (a) Surface spalling along one tooth flank, (b) No hardened case on active profile of one side of the teeth. More
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Published: 01 June 2019
Fig. 21 SEM backscatter electron image of MnS inclusions surrounded by tempered martensite in Crank #1, pin #5 More