Influence of forming direction on properties of TC4 alloy during electron beam selective melting

Sun Baofu; Chen Jiaqi; Zhang Rui; Mo Lilin; Huang Xingguang

doi:10.7513/j.issn.1004-7638.2021.02.008

Volume 42 Issue 2

Apr. 2021

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Sun Baofu, Chen Jiaqi, Zhang Rui, Mo Lilin, Huang Xingguang. Influence of forming direction on properties of TC4 alloy during electron beam selective melting[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 43-47, 90. doi: 10.7513/j.issn.1004-7638.2021.02.008

Citation:

Sun Baofu, Chen Jiaqi, Zhang Rui, Mo Lilin, Huang Xingguang. Influence of forming direction on properties of TC4 alloy during electron beam selective melting[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(2): 43-47, 90. doi: 10.7513/j.issn.1004-7638.2021.02.008

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Influence of forming direction on properties of TC4 alloy during electron beam selective melting

doi: 10.7513/j.issn.1004-7638.2021.02.008

Sun Baofu^{1
,
,},
Chen Jiaqi^1
,,
Zhang Rui^{1, 2},
Mo Lilin²,
Huang Xingguang¹

1.
College of Mechanical and Control Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
2.
Guilin Shida Technology Co., Ltd., Guilin 541004, Guangxi, China

Received Date: 2021-01-20
Publish Date: 2021-04-10

Abstract

Abstract

Electron beam selective melting was used to print in different forming directions. Scanning electron microscope (SEM) and metallographic microscope (OM) were used to study the microstructure characteristics of Ti-6Al-4V alloy formed by electron beam selective melting. The mechanical properties of Ti-6Al-4V alloy after forming were obtained, and the influence of forming direction on mechanical properties of the alloy was revealed. The results show that the tensile strength, yield strength and elongation of the transverse printing products can reach 986 MPa, 880 MPa and 11.2% respectively, which are obviously better than those of the vertical printing products. The materials cool down faster in the transverse printing process, and the phase is transformed from β to α′ martensite and then decomposed into microstructure consisting of α+β phases. The materials are heated repeatedly during the vertical printing process, resulting in Widmanstaten structure (superheated structure).
- Ti-6Al-4V,
- 3D printing,
- electron beam selective melting,
- forming direction,
- microstructure,
- mechanical properties

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References(9)

References

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