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heat treating

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... during heat treating and describes the metallurgical sources of stress and distortion during heating and cooling. The article summarizes the effect of materials and the quench-process design on distortion and cracking and details the effect of cooling characteristics on residual stress and distortion...
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
... Abstract A plant had manufactured and heat treated their product in house for years. As time went on, the special steel that they had been using became more expensive, and a switch was made to a more common and less highly alloyed material. However, no change in hardness specifications were...
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
... Abstract This article introduces some of the general sources of heat treating problems with particular emphasis on problems caused by the actual heat treating process and the significant thermal and transformation stresses within a heat treated part. It addresses the design and material factors...
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Published: 01 June 2019
Fig. 7 Heat treated microstructure of saw blades, transverse section, etch: Nital. 500× More
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Published: 01 June 2019
Fig. 4 Fracture of a heat treated disk. 2 × More
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Published: 01 June 2019
Fig. 2 Fracture of ingot slice, heat treated. 10 × More
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Published: 01 June 2019
Fig. 6 Fracture of a specimen from crank arm, heat treated. 1 × Flaky edges of specimen oxidized during heat treatment. More
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Published: 01 December 1993
Fig. 6 SEM micrograph of a satisfactorily heat-treated Al-4Cu alloy extruded bar, showing absence of black, segregated particles. More
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Published: 01 December 1993
Fig. 1 Heat-treated end frame component after cadmium plating. Several tiny cracklike indications, primarily in the base fillet radial zones, were detected by magnetic-particle testing. More
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Published: 01 December 1993
Fig. 22 Impact energy of heat-treated gear segment MLR in as-received gear segment. See also Tables 3 , 4 , 5 . More
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Published: 01 December 1993
Fig. 23 Impact energy of heat-treated gear segment MRR relative to as-received gear segment. See also Tables 3 , 4 , 5 . More
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Published: 01 December 1993
Fig. 24 Impact energy of heat-treated gear segment F relative to as-received gear segments. See also Tables 3 , 4 , 5 . More
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Published: 01 December 1992
Fig. 8 Micrograph of microetched heat-treated microstructure, showing tempered martensite and ferrite stringers. More
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
... of the crack along a cross section of the fractured bolt head. Note the decarborization at the surface of the crack. Fig. 4 Schematic of quench crack formation. Abstract A heat-treated, cadmium-plated AISI 8740 steel bolt broke through the head-to-shank fillet while being handled during...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046388
EISBN: 978-1-62708-224-2
... Abstract The bolt in a bolt and thimble assembly used to connect a wire rope to a crane hanger bracket was worn excessively. Two worn bolts, one new bolt, and a new thimble were examined. Specifications required the bolts to be made of 4140 steel heat treated to a hardness of 277 to 321 HRB...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... while two of the deformed leafs did not meet minimal hardness or tensile requirements. Liquid penetrant testing revealed no cracks or other surface discontinuities on the leaf springs. Material sectioned from the soft spring leafs was heat-treated according to specifications in the laboratory...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006394
EISBN: 978-1-62708-217-4
... electron microscopy (SEM) revealed that the failure occurred by a brittle intergranular mechanism and stress-corrosion cracking (SCC), and indicated a failure mode of selective grain-boundary separation. The diaphragms were heat treated in batches of 25. An improper heat treatment could have resulted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001253
EISBN: 978-1-62708-235-8
... Abstract Octagonal cast ingots weighing 6.5 tons and made of unalloyed heat treated steel CK 45 according to DIN 17200, and crankshafts forged from these ingots showed internal separations during ultrasonic testing. To determine the cause of defect, an ingot slice and a crank arm were examined...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001131
EISBN: 978-1-62708-214-3
... layer The presence of the oxide in the fracture, combined with its absence on all exterior surfaces, indicated that the fracture occurred as a result of an oxide seam in the original material rather than from oxide from heat treating. Nondestructive testing prior to machining and heat treatment...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091640
EISBN: 978-1-62708-229-7
... (1600 psi). The valve stem was reported to have been solution heat treated at 1040 +/-14 deg C (1900 +/-25 deg F) for 30 min and either air quenched or oil quenched to room temperature. The stem was then reportedly aged at 550 to 595 deg C (1025 to 1100 deg F) for four hours. Investigation (visual...