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Title :疲労を受けた純銅の粒界き裂発生と転位組織
Title alternative :Dislocation Structures and Intergranular Crack Initiation in Fatigued Copper
Authors :兼城, 英夫
片桐, 一宗
真壁, 朝敏
糸村, 昌祐
Authors alternative :Kaneshiro, Hideo
Katagiri, Kazumune
Makabe, Chobin
Itomura, Shousuke
Issue Date :25-Mar-1996
Abstract :Although a number of models for the initiation of intergranular cracks under fatigue have been proposed, most of them are not considered to be sufficient qualitatively. In this study, the mechanism of intergranular crack initiation in fatigued copper is investigated on the basis of the observation of dislocation structures and surface topography by means of transmission and scanning electron microscopy. At the intersections of ladder-like structures with the grain boundary, extrusion-type intergranular deformations are frequently observed. It is also found that the ladder-like structures are sometimes formed along the grain and twin boundaries. On the basis of these observations, a mechanism of crack initiation at the grain boundary is proposed.
Type Local :雑誌掲載論文
ISSN :03875008
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/215
Citation :日本機械学会論文集. A編 = Transactions of the Japan Society of Mechanical Engineers. A Vol.62 no.595 p.66 -72
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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