Preparation of TC4 titanium alloy by electron beam selective melting

2021 ◽  
Author(s):  
Baofu Sun ◽  
Wei Ning ◽  
Jiaqi Chen
Keyword(s):  
Titanium Alloy ◽  
Electron Beam ◽  
Tc4 Titanium Alloy ◽  
Electron Beam Selective Melting

Influence of Hydrogen on Microstructure of Electron Beam Welded Joint

2013 ◽  
Vol 753-755 ◽  
pp. 367-371
Author(s):  
Xin Liu ◽  
Zhi Yong Mao
Keyword(s):  
Titanium Alloy ◽  
Electron Beam ◽  
Weld Metal ◽  
Hydrogen Content ◽  
Welded Joints ◽  
Welded Joint ◽  
Optical Microscope ◽  
Hydrogen Charging ◽  
Tc4 Titanium Alloy ◽  
Oxygen Analyzer

Hydrogen distributions of TC4 electron beam welded joints with different hydrogen contents were measured by hydrogen oxygen analyzer. Microstructures of electron beam welded joints for TC4 titanium alloy with different hydrogen contents were observed and analyzed by optical microscope and TEM. And the influence of hydrogen on microstructure of the joints was investigated. The results show that the hydrogen content of weld HAZ is higher than other zones in the electron beam welded joints, while the hydrogen content of fusion zone is lower than other zones in the electron beam welded joints. The microstructure of the weld metal is fine lamellar α + β phase after hydrogen charging. In the range of hydrogen contents discussed in this study (from 0 to 0.101 wt. %), with the increase of hydrogen content, there is little change in the appearance of the microstructure of the weld metal. There are stacking fault and dislocation in the microstructure of TC4 electron beam welded joints with different hydrogen contents after hydrogen charging. The presence of hydrogen can promote the formation of twins in electron beam welded joints. With the increase of hydrogen content, the number of twins is increased.

Analysis of heterogeneity of fatigue properties of double-sided electron beam welded 140-mm thick TC4 titanium alloy joints

2021 ◽  
Vol 142 ◽  
pp. 105942
Author(s):  
Jian Long ◽  
Lin-Jie Zhang ◽  
Liang-Liang Zhang ◽  
Jie Ning ◽  
Ming-Xiang Zhuang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Electron Beam ◽  
Fatigue Properties ◽  
Tc4 Titanium Alloy

Research on Forming Technology of Electron Beam Selective Melting for Ti-6Al-4V Powder

2010 ◽  
Vol 44-47 ◽  
pp. 2778-2782
Author(s):  
Hai Bo Qi ◽  
De Liang Ren ◽  
Ming Jun Zheng
Keyword(s):  
Tensile Strength ◽  
Titanium Alloy ◽  
Electron Beam ◽  
Ultimate Tensile Strength ◽  
Tensile Properties ◽  
Fracture Elongation ◽  
Forming Technology ◽  
Material Characteristics ◽  
Electron Beam Selective Melting

Electron beam selective melting (EBSM) has many advantages for the titanium alloy parts manufactured, therefore, the material characteristics, scanning methods and the tensile properties of Ti-6Al-4V by EBSM are studied in this paper. Aimed at the lower density, poorer electric and heat conductibility of Ti-6Al-4V, three scanning paths have been developed: reverse scanning, interlaced reverse and orthogonal scanning, and the surface of forming part made by the above three scanning methods is smooth and no bulge. The tensile specimens of Ti-6Al-4V are produced by EBSM, the average of ultimate tensile strength and the fracture elongation of the specimen are 1080MPa and 10.10%, respectively.

Hierarchical microstructure of a titanium alloy fabricated by electron beam selective melting

2020 ◽  
Vol 42 ◽  
pp. 1-9
Author(s):  
Jixin Yang ◽  
Yiqiang Chen ◽  
Yongjiang Huang ◽  
Zhiliang Ning ◽  
Baokun Liu ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Electron Beam ◽  
Hierarchical Microstructure ◽  
Electron Beam Selective Melting
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