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Weld metal

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047621
EISBN: 978-1-62708-229-7
... (region C). The external repair weld (region D) had only partial fusion with the earlier bead. The arrow shows a film of oxide slag at the interface. Etched with 2% chromic acid plus HCl. 10x Investigation Microscopic examination of the fracture site revealed unfused weld metal surfaces...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001434
EISBN: 978-1-62708-236-5
... Abstract One of the connecting rods of a vertical, four-cylinder engine with a cylinder diameter of 5 in. failed by fatigue cracking just below the gudgeon-pin boss. Failure took place in line with the lower edge of a deposit of weld metal. The fracture surface was smooth, conchoidal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001435
EISBN: 978-1-62708-236-5
... of the keyway, which had been re-cut shorter than the original one after the welding repair. Fig. 2 Surface of fracture. × 1 1 4 Fig. 3 Keyway filled with weld metal. × 1 1 4 Hardness tests showed values of 155 VDP for the material of the shaft (equivalent...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001427
EISBN: 978-1-62708-236-5
.... Crankshafts Stress concentration Weld metal The crankshaft of a compressor fractured through the web remote from the driving end after about three years' service. The fracture ran diagonally across the web, which was 3 1 8 in. × 1 3 16 in. in section, into the crankpin; it passed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047681
EISBN: 978-1-62708-229-7
... was opened by fracturing the vane. The crack surface displayed fatigue beach marks emanating from the seam-weld interface. Both the leading-edge and trailing-edge seam welds exhibited weld-metal expulsions up to 3.6 mm (0.14 in.) in length. Metallographic examination confirmed that metal expulsion from...
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Published: 01 December 1993
Fig. 8 Micrograph of a diaphragm weld, showing base metal and weld metal microstructures, along with corresponding hardnesses. 122× More
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Published: 01 December 1992
Fig. 16 Plot of microhardness survey through weld metal and HAZ of sample 1, weld W2. Survey starts in weld metal and ends in base metal. HAZ is area of reduced hardness. More
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Published: 01 December 1993
Fig. 6 A region of weld metal/base metal interface that exhibits martensite. 38× More
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Published: 01 December 1992
Fig. 6 Microstructures of 2.25Cr-1 Mo steels. (a) Base metal. (b) Weld metal. More
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Published: 01 June 2019
Fig. 6 SEM fractograph showing typical fatigue features through the weld metal More
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Published: 01 June 2019
Fig. 1(b) Close-up of weld metal showing intergranular cracks and appearance of brittle failure. More
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Published: 01 June 2019
Fig. 1(d) Microstructure of longitudinal weld metal near fracture-initiation point. Note the white phase along grain boundaries. More
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Published: 01 June 2019
Fig. 6 Advanced and early stage oriented cavitation found in weld metal. More
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Published: 01 June 2019
Fig. 3 Keyway filled with weld metal. × 1 1 4 More
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Published: 01 June 2019
Fig. 2 Longitudinal section depicting weld metal, oil-seal groove and fracture. × 1 1 3 More
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Published: 01 June 2019
Fig. 5 Cracking in weld metal. (×100) More
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Published: 01 June 2019
Fig. 6 Stress corrosion cracking associated with runs of weld metal. (× 5). More
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Published: 01 June 2019
Fig. 4 Polished/etched section of weld metal at boundary of void in Figure 3 . Preferential corrosion is evident. 300×. More
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Published: 01 June 2019
Fig. 4 Showing shear fracture of weld metal and root defects. More
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Published: 01 June 2019
Fig. 4 At the junction of the heat affected zone and weld metal, the light structure is typical of cast chromium-nickel alloy, and the dark HAZ is martensitic. (See Fig. 3 ) Vilella's etch; magnification 100 times. More