Numerical Studies of Shot Peening of High Strength Steels and the related Experimental Investigations by means of Hole Drilling, X-ray and Synchrotron Diffraction Analysis

Author:  M. Farajian, V. Hardenacke, M. Klaus, F. Schweizer, W. Pfeiffer, D. Siegele
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.317-323)
Doc ID:  2014096
Year of Publication:  2014
Numerous experimental works have been done since decades on studying the influence of different shot peening parameters on the surface material conditions in different metals. Most of the research work has been focused on experimentally determining the residual stress and its depth profile by means of x-ray diffraction and corresponding electro-polishing the surface layers or by the hole drilling method. This valuable body of knowledge has led to the development of phenomenological-models to describe the surface material conditions qualitatively. Since there are quite a number of parameters which could influence the residual stress field after shot peening, covering the whole possible process parameters combinations with the purpose of experimentally determining the residual stress profiles could be difficult. A deeper insight into the residual stress states after shot peening could be possible on the basis of sound physical principles by means of numerical approaches. In this study shot peening of high strength steel S690QL has been modelled and simulated. The results have been compared with the residual stress depth profiles determined by x-ray and synchrotron diffraction and the hole drilling method.

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