著者

猪子 富久治 安宅 健 木村 節 秋園 幸一 美馬 源次郎 辛島 誠一

出版者

公益社団法人 日本金属学会

雑誌

日本金属学会誌 (ISSN:00214876)

巻号頁・発行日

vol.46, no.7, pp.672-679, 1982

被引用文献数

2 2

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In order to examine effects of the grain boundary on initiation of fatigue cracks, aluminum bicrystals were produced with Bridgman method. They were tested by a bending fatigue testing machine under the constant strain amplitude of 0.18%.<BR>It has been found that conditions necessary for the initiation of fatigue cracks along primary slip bands in the grain boundary affected-regions are as follows:<BR>(1)&emsp;Dislocations parallel to the grain boundary planes are of nearly the screw type.<BR>(2)&emsp;Cross slip on the primary slip systems can be promoted due to incompatibility of elastic and plastic strains at grain boudaries.