Surface modification of Ni (50.6 at.%) Ti by high current pulsed electron beam treatment

被引：30
|
作者：
Zhang, K. M.
Zou, J. X.
Grosdidier, T. [1 ]
Gey, N.
Yang, D. Z.
Hao, S. Z.
Dong, C.
机构：
[1] Univ Paul Verlaine Metz, UMR CNRS 7078, LETAM, F-57012 Metz, France
[2] Dalian Univ Technol, Sch mat Sci & Engn, State Key Lab Mat Modificat Laser Ion & Electron, Dalian 116024, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷 / SPEC. ISS.期
关键词：
nanostructured materials; thin films; rapid solidification; electron beam processing; phase transitions;
D O I：
10.1016/j.jallcom.2006.08.278
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A Ni (50.6 at.%) Ti shape memory alloy having a grain size of 30-50 mu m, was subjected to high current pulsed electron beam (HCPEB) irradiation and the microstructure modifications were investigated in detail. The treatment induces superfast melting and solidification at the top surface. As a result, the top surface melted layer solidified into a 600 nm fine grain austenite (132) structure. A martensitic phase transformation occurred in the subsurface zone due to the high thermal stress induced by the HCPEB treatment. This transformation was avoided in the top surface melted layer. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：682 / 685
页数：4
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