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WEN Ai-ling, WANG Sheng-wu, YANG Jun-yong, REN Rui-ming. Influence of High-energy Peening Surface Nano-crystallization on Fatigue Life of Pure Titanium[J]. Development and Application of Materials, 2007, 22(4): 11-14. DOI: 10.19515/j.cnki.1003-1545.2007.04.004
Citation: WEN Ai-ling, WANG Sheng-wu, YANG Jun-yong, REN Rui-ming. Influence of High-energy Peening Surface Nano-crystallization on Fatigue Life of Pure Titanium[J]. Development and Application of Materials, 2007, 22(4): 11-14. DOI: 10.19515/j.cnki.1003-1545.2007.04.004
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Influence of High-energy Peening Surface Nano-crystallization on Fatigue Life of Pure Titanium

  • School of Mechanic Engineering,Dalian Jiaotong University,Dalian 116028,China

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  • Received Date: February 05, 2007
  • Available Online: June 17, 2024
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  • Fatigue test was carried out for commercial pure titanium that have nano-crystallized in surface by high-energy shot peening.The result indicates that the improvement of the fatigue limit is due to the nano-crystallization and severe plastic deformation in the surface layer induced by high-energy shot peening.The observations of fracture surface under SEM found that fatigue cracks initiation area exists mostly in surface and in subsurface.In case of the fatigue cracks initiation area in surface,specimen exhibits longer fatigue life.In the other case,the surface damage of specimen by high-energy shot peening results in short fatigue life or instant break.
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