Fatigue properties of friction-worked S45C under rotary bending

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  • 摩擦加工を受けたS45Cの回転曲げ疲労特性の解明
  • マサツ カコウ オ ウケタ S45C ノ カイテン マゲ ヒロウ トクセイ ノ カイメイ

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Abstract

To investigate the effects of friction-work on fatigue properties, rotary bending fatigue tests were performed on friction-worked S45C steel specimens in laboratory air at room temperature. Tests were also conducted on electropolished specimens for comparison. The results indicated that the fatigue strength of friction-worked specimens was considerably improved compared with that of electropolished specimens. This was due to the high compressive residual stress and the work-hardened layer, which consisted of submicron grains formed on the specimen surface by friction-work. In addition, the coaxing effect appeared for friction-worked specimens as a result of stress-incremental tests.

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