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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001490
EISBN: 978-1-62708-232-7
... introduced during the steelmaking process. Leakage Liquid metals Magnesium base alloys Melting pots Nonmetallic inclusions 1022 UNS G10220 1020 UNS G10200 Erosive wear (Other, general, or unspecified) processing-related failures A steel pot used to hold molten magnesium alloys leaked...
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Published: 01 June 2019
Fig. 3 Temperatures developed in racing were high enough to melt out low-melting-point material in the 357 alloy, leaving porous zones in piston crowns. Such structures appear as shrinkage porosity in radiographs. Unetched; 35×. More
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Published: 01 June 2019
Fig. 5 Local melting and hardening caused by an electrical engraving tool, etched in alcoholic picric acid. 200× More
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Published: 01 June 2019
Fig. 3 Grain boundary melting and particles on grain surfaces characterize fracture away from center of failure. Magnification 840 times. More
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Published: 01 June 2019
Fig. 4 Boundary melting and large intermetallics were found near the fracture. Magnification 320 times. More
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Published: 01 June 2019
Fig. 2 The initial heating DSC thermogram, exhibiting a melting transition consistent with a PET resin. A low-temperature crystallization exothermic transition was also apparent. The (I) indicates that the numerical temperature was determined as the inflection point on the curve. More
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Published: 01 June 2019
Fig. 17 Microstructure of an as-received unused melting pot; nital etch; 100×. More
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Published: 01 June 2019
Fig. 1 Overall view of the inside of the bottom of the failed melting pot. More
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Published: 01 June 2019
Fig. 2 Polished-and-etched cross section of a section of the failed melting pot shown in Fig. 1 . The ferrite and pearlite constituents normally found in hot-rolled carbon steel and large anomalous inclusions are evident. More
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Published: 01 June 2019
Fig. 4 X-ray maps from a section of the failed melting pot shown in Fig. 1 . (a) Scanning electron micrograph of a polished cross section. EPMA spectra of regions A and B (arrows) are shown in Fig. 3(a) and 3(b) , respectively. (b) X-ray dot map showing distribution of oxygen. (c) X-ray More
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Published: 01 December 2019
Fig. 4 Close view of the sleeve showing melting and deformation More
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Published: 01 June 2019
Fig. 5 Metallurgical section shows depth of re-melted zone. More
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Published: 01 June 2019
Fig. 2 Surface with melted droplets and craters at the fracture. 5× More
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Published: 01 June 2019
Fig. 3 Surface with melted droplets and stress crack. 25× More
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Published: 01 June 2019
Fig. 5 (a) Cross section of electrode assembly just behind melted end of sheath. A thin glass layer is shown between the molybdenum electrode and the 690 sheath (see arrow). (b) SEM of glass layer. Alloying between the molybdenum and nickel was not present in this region. More
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Published: 01 June 2019
Fig. 6 Specimen sectioned from melted end on 690 electrode sheath. (a) Light area around outer edge shows melted 690. Molybdenum was not found in this region. (b) Extremely large grains in excess of 0.13 cm were common in this region. More
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Published: 01 December 1992
Fig. 6 SEM micrograph of a fracture surface, depicting a melted and resolidified cadmium layer over an intergranular topography. EDS analysis was performed at “A” (see Fig. 7 ). 1540×. More
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Published: 01 December 1992
Fig. 3 SEM micrographs of the solder surface in the demo unit. Note the melted and resolidified crystalline structure in (a). (a) 1000×. (b) 100×. More
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Published: 01 December 1992
Fig. 4 Area of additional spark tracks. The melted material has resulted in a recessed geometry, with buildup along the sides of the tracks. 31×. More
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Published: 01 December 1993
Fig. 4 Close-up of one of the melted and arced wires in incident 1 More