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heat tinting

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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
... Abstract The springs formed from 3.8 mm diam cold-drawn carbon steel wire failed to comply with load-test requirements. A split wire in the spring was revealed by investigation. A smooth heat-tinted longitudinal zone was observed in the fracture. It was concluded that the spring failed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001846
EISBN: 978-1-62708-241-9
... chromium steel circumferential wear marks peel pits heat tinting fatigue striations SEM imaging fatigue strength 42CrMo (chromium-molybdenum alloy steel) 38CrMoAl (chromium-molybdenum-aluminum alloy steel) Background A locomotive turbocharger main shaft and a bearing sleeve assembled...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0091048
EISBN: 978-1-62708-235-8
... of the supplied sample revealed a single crack, transverse to the fillet weld axis. No bulk macroscopic plastic deformation was associated with the cracking. Relatively high heat input during welding was suggested by the extent of the oxide or heat tint discoloration. The underside of the weld joint contained...
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
... ). The previously mentioned unfavorable fiber direction of these pieces can also be seen from the secondary banded structure. The weld seams consisted of austenitic steel. They were permeated with hot tears ( Fig. 9 ) as could be concluded already from the heat tinting of the fractures. The transition zones were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048757
EISBN: 978-1-62708-234-1
... of the overheated tube disclosed blue-tinted areas and patches of flaky white, yellow, and brown oxide scale. There was a dark-gray scale on the inside surface with no evidence of corrosion. The presence of the colored scale on the outer and inner surfaces was an indication of heating to approximately 815 °C (1500...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... was apparent on each, which varied in size among all the individual balls. Spalling was also visible in varying degrees. No heat tinting or elevated temperature indications were observed. Each bearing ball diameter was measured in three directions using a caliper. No significant ball reductions were observed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001482
EISBN: 978-1-62708-229-7
... in the vicinity of the fissures and along the surface of the tube for a distance of about 5 8 in. from the weld. While copper particles were not to be seen within the main fissure or along the bore side of the tube with the specimen in the etched condition, heat-tinting at 300°C revealed them as shown...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006804
EISBN: 978-1-62708-329-4
... to radiant heating, which is line-of-sight. Fig. 15 Example of melted aluminum cladding on an insulated vessel. Aluminum melts at 657 °C (1215 °F), which places the areas of melting in heat exposure zone V. Heat Tinting Following a fire, metal surfaces can often be found to be discolored...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047756
EISBN: 978-1-62708-235-8
... extremities of a granular gold-tinted surface region adjacent to the tube-to-sleeve brazed joint and extending circumferentially were revealed by microscopic examination. Embrittlement of the tube caused by molten braze metal penetration along grain boundaries was evidenced by micrographs of a granular...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... surface shwon in Fig. 1 after cleaning. Fracture initiated in the flange and propagated across the rim, plate, and hub. Although not evident in Fig. 2 , two zones exhibited definite signs of heating. The entire hub fracture surface was tinted blue, indicating it reached temperatures...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001773
EISBN: 978-1-62708-241-9
... B to Plate A. Furthermore, a dark line indicative of heat tint, identifies the HAZ relative to the side of the plate shown in Fig. 6 . A close-up view of the cracks in Plate A is shown in Fig. 7 , with the cracks observed to be fine and branched across the surface of the plate. The red material...
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
... ( 1 4 in.) heat-strengthened, gray-tinted glass intended for installation with a backup wall. The specified glass product has a transparent metallic oxide coating on the outer surface and a solid color ceramic frit on the back surface. The installed glass differed from the specifications...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
... is not necessarily a defect. Welding is defined as a joining process producing coalescence of materials by heating them to the welding temperature, with or without the application of pressure or by the application of pressure alone, and with or without the use of filler material. So, welding may or may...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... (several millimeters) located near the off-loading port, that is most likely a result of the damage done to the blender during the accident. No local regions of melting or heat tinting were found. These findings indicate the chemical reactions did not initiate at the surface of the shell, where water from...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001799
EISBN: 978-1-62708-241-9
... also smeared at some locations. High-temperature color bands were present on fractured surface. These bands were due to heat tinting probably resulting from friction on the fracture surfaces prior to and after final failure. Dark bands were observed on the shaft on ‘motor side’ of the fractured surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001255
EISBN: 978-1-62708-232-7
... off neck. In the centre of the fracture is a darkly tinted excentric flaw ( Fig. 2 ). Such internal cracks occur when a cast or forged work piece is heated up too quickly and insufficiently thoroughly for the anneal. The thermal expansion of the outer zone puts the central core under tensile stress...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001826
EISBN: 978-1-62708-241-9
... is greatly influenced by the amount of corrosion product deposited on the wall of the tube. The deposit buildups are most likely to occur where flow is disrupted by bends; welds with backing rings or protrusions; at regions of high heat flux; and on horizontal or slanted tubes that are heated from above...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
... fracture. This will be discussed below. Macrofractography The specimen shown in Fig. 4 was cut open to reveal the fracture surface ( Fig. 11 ). The fracture face exhibited intergranular fracture propagation. The crack surface contained pits and heat tinting. Fig. 11 Photomacrograph...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... have shown that heat-tinted zones are especially vulnerable. These zones are created in a welding process where material above the scaling temperature is contacted by air. The result is a migration of chromium into the surface scale, leaving underlying material depleted and susceptible to corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001020
EISBN: 978-1-62708-214-3
... in the fully heat-treated condition. Specimen Selection Figure 3 shows the affected strut cylinder and fractured lower drag-strut attachment lugs (smaller arrows). In Fig. 3 , the triangular drag-strut attachment yoke is shown rotated back about the still intact upper attachment lug pivot. The 25.4...