- 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
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) Dislocations parallel to the grain boundary planes are of nearly the screw type.<BR>(2) Cross slip on the primary slip systems can be promoted due to incompatibility of elastic and plastic strains at grain boudaries.