アルミナ分散強化銅と316ステンレス鋼拡散接合継手の低サイクル疲労強度

概要

論文の詳細を見る
Low cycle fatigue tests were performed for 316 stainless steel (316SS), alumina-dispersion-strengthened copper (DS Cu) base metal and 316SS-DS Cu diffusion-bonded joints. Plastic strain distribution of joint specimens during fatigue was measured to estimate deformation of the joint specimens. Furthermore the microstructure of the diffusion zone of the joints and fracture surface of the fatigue specimens were examined with scanning and transmission electron microscopes. Intermetallic compounds and recrystallization of DS Cu were observed near the interface in DS Cu. The fatigue life of the joints was lower than that of DS Cu. The joint specimens fractured in the DS Cu near the interface in the case of low strain range fatigue tests. For high strain range fatigue tests, however, the fracture point was in the DS Cu 6〜7 mm from the interface, at which the maximum plastic strain occurred.
一般社団法人日本機械学会の論文
1995-04-25