肉盛り材/母材境界部のキャビテーション・***ージョン特性
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概要
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Cavitation erosion was studied for welding deposit metal and base metal in the area near the interface. The base metal was austenitic stainless steel and the deposit metals were five alloys : three nickel-base alloys, an iron-base alloy and a cobalt-base alloy. The erosion of welding deposit metal near the interface occurs similarly to that of the deposit metal itself. However, the erosion of the base metal is accelerated due to the softening in the heat-affected zone during the welding processing. Moreover, the selection of high erosion-resistance deposit metals is hazardous to the base metal near the interface, because the cavitation bubbles flow on the surface from the deposit metal to the roughened base metal.
- 1994-03-25
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