所属单位：冶金工程学院

发表刊物：Journal of Wuhan University of Technology-Mater. Sci.

关键字：中文关键字：硬度，英文关键字：commercially pure titanium; equal channel angular

摘要：The evolution of hardness homogeneity in commercially pure titanium processed by equal channel angular pressing (ECAP) for up to 4 passes following route C at room temperature using a die of 90° was investigated by recording the microhardness on the cross-sectional and longitudinal planes of each billet. The results show that the hardness increases signifi cantly after the fi rst pass although there is a region of lower hardness on the cross-section running in a band near the bottom surface of the billet, and then increases by very small amounts in subsequent passes. With increasing numbers of passes, the lower hardness region near the bottom surface disappears and the microhardness values are distributed homogeneously throughout the crosssectional and longitudinal planes after 4 passes of ECAP. The microhardness values in the central regions of the billet are slightly lower than those of the top and bottom surfaces. The results show that good homogeneity may be achieved throughout the billets after 4 passes of ECAP following route C.

备注：刘晓燕（SCI收录）

合写作者：赵西成,杨西荣

第一作者：刘晓燕

论文类型：期刊论文

卷号：卷：29

期号：期：3

页面范围：页：578-584

是否译文：否

发表时间：2014-01-01