期刊
JOURNAL OF NUCLEAR MATERIALS
卷 434, 期 1-3, 页码 417-421出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2012.12.009
关键词
-
资金
- Innovation Program [KJCX2-YW-N35]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA03010303]
- National Magnetic Confinement Fusion Program [2009GB106005, 2011GB110001, 2011GB110003]
- National Natural Science Foundation of China [11075177, 91026002, 91126002, 11175203, 51101152]
In this paper, the 9Cr-1Mo martensitic steel (T91) was processed by ECAP method at room temperature and annealed at 500 degrees C for 2 h subsequently. The optical and TEM micrographs exhibit that the average grain size was refined from 20 gm for the initial sample to 200 nm for the sample ECAP extruded six passes and the martensitic laths were severely destroyed during ECAP processing. With the increasing number of the extrusion passes, the microhardness and the tensile strength increase from 2.7 GPa and 730 MPa for the initial sample to 3.8 GPa and 1160 MPa for the sample extruded six passes, while the uniform elongation decreases from 23% to 10%, respectively. After the annealing, the grains grow slightly to 300 nm, and the tensile strength of the samples extruded one and six passes decreases to 880 MPa and 1140 MPa while the elongation increases to 21% and 12% respectively. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据