2312 ECAPにより組織を微細化された純銅の疲労強度と表面損傷(S07-2 非鉄材料の疲労特性,S07 構造材料の疲労強度とき裂進展問題)

概要

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Two coppers, oxygen-free copper (OFC) and deoxidized low-phosphorous copper (DLP), were processed by equal channel angular pressing (ECAP) according to the Bc route with 4 and 8 passes. To study the physical background of fatigue strength, formation behavior of surface damage and the change in surface hardness during stressing was monitored. A close relationship was observed between the change in hardness and the formation behavior of surface damage. Fatigue strength of OFC and DLP were discussed based on the formation process of surface damage and growth behavior of a small crack.
一般社団法人日本機械学会の論文
2007-09-07