발간논문

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Vol.28, No.2, 151 ~ 156, 1990
Title
Study on the Cracking of Leaded Nickel Silver Cast Structure During cold Rolling
고흥석Hung Suk Ko, 문인기In Ge Moon, 박종우Jong Woo Park
Abstract
Microstructural observations and mechanical tests were carried out to clarify the causes of frequent crack occurrence of leaded nickel silver cast structure during cold rolling. Interdendritic micropores in cast structure are believed to be the major causes of the failures. High hydrogen gas absorbing power of this high nickel bearing alloy may lead to the formation of the micropores, when degassing is insufficient. This supposition was further supported by the comparison of tensile and impact test results of fully degassed specimens with those of insufficiently degassed specimens.
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