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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0047307
EISBN: 978-1-62708-223-5
... Abstract An impact breaker bar showed signs of rapid wear. The nominal composition of this chromium alloy cast iron was Fe-2.75C-0.75Mn-0.5Si-0.5Ni-19.5Cr-1.1Mo. The measured hardness of this bar was 450 to 500 HRB. The desired hardness for this material after air hardening is 600 to 650 HRB...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... Abstract This article discusses the generic features of impact wear on metals, ceramics, and polymers. It describes normal impact wear and compound impact wear, as well as the features of impact wear testing apparatus such as ballistic impact wear apparatus and pivotal hammer impact wear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
... contact. Hence, the spalling of gear teeth and bearing materials is also known as fatigue wear or rolling contact fatigue. Spalling damage on a surface can also occur from impact events. For example, the spalling of striking/struck tools is of considerable interest from the engineering, economic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... Abstract Erosion of solid surfaces can be brought about solely by liquids in two ways: from damage induced by formation and subsequent collapse of voids or cavities within the liquid, and from high-velocity impacts between a solid surface and liquid droplets. The former process is called...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046028
EISBN: 978-1-62708-235-8
... Abstract The 8620 steel latch tip, carburized and then induction hardened to a minimum surface hardness of 62 HRC, on the main-clutch stop arm on a business machine fractured during normal operation when the latch tip was subjected to intermittent impact loading. Fractographic examination 9x...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006919
EISBN: 978-1-62708-395-9
... Fig. 29 Comparison of predicted and measured loads during the low-temperature impact of cracked specimens Fig. 30 Comparison of low-temperature impact performance in cracked and uncracked specimens; −50 °C (−60 °F). P , pressure; W , width Fig. 31 Undamped load-time signals...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... Abstract Impact or percussive wear is defined as the wear of a solid surface that is due to percussion, which is a repetitive exposure to dynamic contact by another body. Impact wear, however, has many analogies to the field of erosive wear. The main difference is that, in impact wear...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001840
EISBN: 978-1-62708-241-9
... (10%) 0.9 3300 1230 The studying cladding parameters Table 3 The studying cladding parameters Samples Load ratio, R Stand-off distance, mm Explosive thickness, mm Detonation velocity, m/s Impact velocity, m/s Impact energy, kJ No. 1 1 4 28 2280 547 56.82...
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Published: 01 June 2019
Fig. 5 Notch impact toughness as function of impact temperature. More
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Published: 01 June 2019
Fig. 5 Charpy V-notch impact energy data for pad and shell plate (mean values). More
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Published: 01 June 2019
Fig. 7 Fractograph of impact specimen #8 (−60deg. F; 50% cleavage, 50% ductile). More
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Published: 01 June 2019
Fig. 8 Plot of the results of the charpy impact tests performed on the Hatch #2 Vent Header Pipe. More
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Published: 01 June 2019
Fig. 3 Failure sequence: (a) bolts fail; (b) blade 1 detaches; (c) impact between blades 1 and 2; (d) tip of blade 2 detaches and hits ground; (e) blade 1 impacts on ground, and parts of blade 2 detach; (f) surface material from blade 2 blown back by wind More
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Published: 01 June 2019
Fig. 11 Charpy impact results plotted as temperature vs. energy absorbed, % shear failure and % contraction for longitudinal steel samples taken from the mainmast of the U.S.S. Arizona. More
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Published: 01 June 2019
Fig. 12 Charpy impact energy versus temperature for longitudinal specimens from U.S.S. Arizona, HMS Titanic, and A-36 steels. More
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Published: 01 June 2019
Fig. 4 Charpy impact energy plotted versus temperature for banded and non-banded cores. More
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Published: 01 June 2019
Fig. 18 Cleavage features of a piece of PH 13-8 Mo impact tested at liquid nitrogen temperature. More
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Published: 01 June 2019
Fig. 6 Brittle cleavage fracture surface on a notched bar impact test specimen from the broken eyebolt. Scanning electron micrograph. 500 × More
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Published: 01 June 2019
Fig. 7 Microstructure (with cleavage crack) of an aged notched bar impact test specimen. Normalized at 900° C, 10% deformed and aged 1 2 h at 250° C. 500 × More
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Published: 01 June 2019
Fig. 5 On impact sample, white arrows point out intermetallics and dark arrows indicate grain boundary melting. Magnification 840 times. More