Correlation of Mechanical Surface Treatments, induced Surface States and Fatigue Performance of Steel Components
Correlation of Mechanical Surface Treatments, induced Surface States and Fatigue Performance of Steel Components
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DOI：
10.1016/j.proeng.2011.11.120
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
V. Schulze;J. Hoffmeister;M. Klemenz
中科院分区：
文献类型：
--
作者：
V. Schulze;J. Hoffmeister;M. Klemenz
机械表面处理，如喷丸处理，被广泛用于诱导表面状态，从而提高钢构件的疲劳性能。喷丸对表层状态的影响是可以很好地理解的，并且可以使用实际的有限元模拟工具来模拟。使用合适的模型还可以预测服役过程中残余应力的稳定性。在已知这种松弛表面状态和载荷应力分布的情况下，可以使用局部疲劳特性或裂纹扩展能力的概念来预测构件的疲劳性能。文中给出了AISI4140钢在不同热处理条件下的喷丸、表面状态及其稳定性以及疲劳性能预测的示范结果。
Mechanical surface treatments such as shot peening are widely used to induce surface states leading to enhanced fatigue properties of steel components. The effects of shot peening on the surface layer state are well understood and can be simulated using actual finite element simulation tools. The stability of the residual stresses during service can also be predicted using appropriate models. Knowing this relaxed surface state and the distribution of loading stresses the fatigue performance of components can be predicted using approaches like the concept of local fatigue properties or of the ability of crack propagation. In the paper exemplary results on shot peening, surface state and its stability as well as prediction of fatigue properties will be shown for the steel AISI 4140 in different heat treatment conditions.