Surface modification of TC4 titanium alloy by high current pulsed electron beam (HCPEB) with different pulsed energy densities

被引：66
作者：
Gao, Yu-kui [1 ]
机构：
[1] Tongji Univ, Coll Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 572卷
关键词：
High current pulsed electron beam (HCPEB); Surface topography; Nanohardness; TC4 titanium alloy; 316L STAINLESS-STEEL; GRAIN-REFINEMENT; MAGNESIUM ALLOY; NITI ALLOY; MICROSTRUCTURE; IRRADIATION; MECHANISMS; EVOLUTION; WEAR; RESISTANCE;
D O I：
10.1016/j.jallcom.2013.04.002
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：
Surface changes including surface topography and nanohardness distribution along surface layer were investigated for TC4 titanium alloy by different energy densities of high current pulsed electron beam (HCPEB). The surface topography was characterized by SEM and AFM, and cross-sectional TEM observation was performed to reveal the surface modification mechanism of TC4 titanium alloy by HCPEB. The surface roughness was modified by HCPEB and the polishing mechanism was analyzed by studying the cross section microstructure of electron beam treated specimens by SEM. The fine grain structure inherited from the rapid solidification of the melted layer as well as the strain hardening of the sub-surface are two of the factors responsible the increase in nanohardness. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：180 / 185
页数：6
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