Surface and property characterization of laser polished Ti6Al4V

被引：49

作者：

Zhou, Jing ^{[1
]}

Liao, Conghao ^{[2
]}

Shen, Hong ^{[2
,3
]}

Ding, Xiaohong ^{[1
]}

机构：

[1] Univ Shanghai Sci & Technol, Coll Mech Engn, Shanghai 200093, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China

[3] State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2019年 / 380卷

基金：

中国国家自然科学基金;

关键词：

Laser polishing; Surface toughness; Microstructure; Electrochemical corrosion; COMPONENTS;

D O I：

10.1016/j.surfcoat.2019.125016

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Laser polishing is being increasingly utilized as a method of surface treatment for metal alloys, and the rapid heating and cooling in the process significantly modify the subsurface material properties. However, understanding the effect of laser polishing on the properties is still incomplete. In this study, laser polishing of titanium alloys is experimentally investigated, in which the polishing parameters are determined by the energy conservation and the surface roughness can be effectively decreased, from 7.3 to approximately 0.6 urn through the orthogonal experiments. Through thermal cycle analysis of the laser polishing based on the finite element method, the martensite formation occurs in the substrate, which leads the 25% increase of the micro-hardness. The corrosion resistance improvement of the polished surface is attributed to the reduction of surface roughness and the increase of grain size in the polished zone.

引用

页数：8

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