Oxidation Behaviors of Ti60A Titanium Alloy Processed by Laser Additive Manufacturing

被引：6
|
作者：
Liu Jin [1 ,2 ,3 ,4 ,5 ]
Wang Weixi [1 ,2 ,3 ,4 ,5 ]
Cheng Xu [1 ,2 ,3 ,4 ,5 ]
Tang Haibo [1 ,2 ,3 ,4 ,5 ]
机构：
[1] Beihang Univ, Natl Engn Lab Addit Mfg Large Met Components, Beijing 100191, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[3] Res & Applicat Ctr Laser Addit Mfg Def Ind, Beijing 100191, Peoples R China
[4] Minist Educ Laser Direct Mfg Large Met Components, Engn Res Ctr, Beijing 100191, Peoples R China
[5] Beijing Engn Technol Res Ctr Laser Direct Mfg Lar, Beijing 100191, Peoples R China
来源：
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2018年 / 45卷 / 07期
关键词：
laser technique; laser additive manufacturing; oxidation temperature; oxidation performance; Ti60A;
D O I：
10.3788/CJL201845.0702007
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The as-deposited and as-forged Ti60A titanium alloys arc fabricated by the laser additive manufacturing technique, and the oxidation experiment under the temperature of 600-800 degrees C is conducted. The change laws of the weight increase and the microhardnesses of samples under different oxidation conditions arc investigated. The results show that, the surface oxidation products of the as-deposited and as-forged Ti60A alloys mainly consist of TiO2 and Al2O3. The formation of the oxidation layers is caused by the combined action of the inward diffusion of the oxygen into the matrix and the outward diffusion of Al and Ti elements. Under the same experimental conditions, compared with those of the as-forged alloy, the weight increase of the as-deposited Ti60A alloy is smaller, the surface oxidation layer is thinner and denser, the diffusion depth of oxygen element is smaller, and the high-temperature oxidation resistance property is much better.
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页数：8
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