Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (8): 1132-1136.DOI: 10.12068/j.issn.1005-3026.2018.08.014

• Materials & Metallurgy • Previous Articles     Next Articles

Microstructures and Mechanical Properties of Laser Rapid Prototyping Deposited TC4 Alloy

LIU Jing, LIU Yi-ting   

  1. School of Sciences, Northeastern University, Shenyang 110819, China.
  • Received:2017-04-19 Revised:2017-04-19 Online:2018-08-15 Published:2018-09-12
  • Contact: LIU Jing
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Abstract: Microstructures and mechanical properties of laser rapid prototyping deposited TC4 alloy in the parallel and vertical directions were studied by metallographic microscope, scanning electron microscopy and electronic tensile testing machine. The results showed that the β grains growing in the deposited direction are coarse and columnar, which shows a bright and dark strip structure and is typical Widmanstatten structure. The strength vertical to deposition direction is higher than that parallel with deposition direction, but the plasticity is low. The fracture of the alloy is dimple fracture, and the size of the dimples on the fracture vertical to deposition direction is smaller than that parallel with deposition direction.

Key words: laser rapid prototyping, TC4 alloy, microstructure, mechanical property

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