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物理学报. 2003, 52(8): 2092-2095.
doi: 10.7498/aps.52.2092.
多晶体金属疲劳寿命随晶粒尺寸变化的理论研究
- 收稿日期: 2002-10-23
- 修回日期: 2002-11-28
- 刊出日期: 2003-04-05
English Abstract
The relationship between fatigue life and grain size of polycrystalline metals
- Received Date:
23 October 2002
- Accepted Date:
28 November 2002
- Published Online:
05 April 2003
Abstract: In order to explore the effect of grain size on fatigue life, a formula of fatig ue life for polycrystalline metals,which depends on the grain size and cyclic st rain amplitude, is derived based on the non-equilibrium statistical theory of fa tigue fracture and the model of interface energy. Subsequently, the fatigue life s of pure copper and 70-30 brass with different grain sizes are calculated accor ding to the formula which is achieved in this paper, and the results are in agre ement with the experimental results.
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