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ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2025 , Vol. 46 >Issue 24: 431777 - 431777

DOI: https://doi.org/10.7527/S1000-6893.2025.31777

Material Engineering and Mechanical Manufacturing

Microstructure design and mechanical properties of titanium alloy components for laser selective additive manufacturing

  • Xinlei ZHANG ,
  • Ye YUAN ,
  • Hongsheng CHEN ,
  • Liuwei ZHENG ,
  • Wenxian WANG ,
  • Jing WANG
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  • 1.College of Mechanical Engineering，Taiyuan University of Technology，Taiyuan 030024，China
    2.College of Materials Science and Engineering，Taiyuan University of Technology，Taiyuan 030024，China
    3.Instrumental Analysis Center，Taiyuan University of Technology，Taiyuan 030024，China
E-mail： chenhongsheng@tyut.edu.cn

Received date: 2025-01-07

  Revised date: 2025-02-10

  Accepted date: 2025-06-03

  Online published: 2025-06-13

Supported by

Shanxi Province Natural Science Research Surface Project(202303021211045);Shanxi Patent Conversion Plan Project(202402003);Key Research and Development Project of Xinzhou City, Shanxi Province

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Abstract

Titanium alloy， has the characteristics of high strength， high temperature resistance and has a wide range of application prospects in aerospace and other fields， and the lightweight of titanium alloy structural parts is the future development trend. Titanium alloy blocks with different arc arch structures were designed and fabricated based on the structural advantages of high arch pressure of arch Bridges combined with the technological characteristics of selected laser additive manufacturing. The mechanical properties and fracture failure mechanism of the fabricated blocks were investigated through bending， stretching and compression tests at room temperature. The results show that the arc arch structure can reduce the weight of the component by 16% to 40%. The specimen with arc arch radius of 1 mm and arch height of 0.66 mm showed excellent mechanical properties， and the tensile strength reached 1 558.0 MPa. The bending strength can reach 1 506.7 MPa； The compressive strength can reach 2 040.9 MPa. The tensile fracture presents a large number of dimples， which is characterized by ductile brittle fracture. The compression fracture shows grayish white bands， which are brittle inclined shear fracture. The circular arch structure can effectively reduce the weight of the component and guarantee the mechanical properties at the same time， which provides a new strategy for lightweight structure design.

Key words： lightweight structure design; arc arch structure; Ti6Al4V; selective laser melting; fracture mechanism

Cite this article

Xinlei ZHANG , Ye YUAN , Hongsheng CHEN , Liuwei ZHENG , Wenxian WANG , Jing WANG . Microstructure design and mechanical properties of titanium alloy components for laser selective additive manufacturing[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(24) : 431777 -431777 . DOI: 10.7527/S1000-6893.2025.31777

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Total visits: 6658907 Today visits: 1341