所属单位：

冶金工程学院

发表刊物：

METALS AND MATERIALS INTERNATIONAL(SCI)

关键字：

中文关键字：金属; 剧烈塑性变形; 残余应力; X射线衍射; 有限元分析，英文关键字：metals; severe plastic deformation; residual stres

摘要：

The residual stress of commercially pure zirconium specimens subjected to surface mechanical attrition treatment (SMAT) for different durations is measured with X-ray diffraction (XRD). XRD peak broadening analysis is conducted to obtain the distributions of the crystallite size, microstrain and dislocation density as functions of the depth from the processed surface. Finite element modeling is performed to reveal the characteristics of the residual stress distribution. Microstructure observation using optical and electron microscopy are also carried out in order to elucidate the residual stress development. The correlations between the microstructure features and the residual stress distribution in zirconium are examined. The results indicate that a more pronounced compressive residual stress field can be generated by the SMAT process compared to that obtained by conventional shot peening, and that the compressive residual stress distributions exhibit nonlinear variation with the distributions of the full width at the half maximum of the XRD profiles and the dislocation densities.

备注：

SCI 收录，WOS:000351317100007

合写作者：

HuanpingYang,ConghuiZhang,FeiYu

第一作者：

王耀勉

论文类型：

期刊论文

卷号：

卷：21

期号：

期：2

页面范围：

页：260-269

是否译文：

否

发表时间：

2015-03-01