+Advanced Search
Effect of Heat Treatment on Grain Boundary and Tensile Behavior of Selective Laser Melting GH3536 Alloy
Author:
Affiliation:

1.College of Chemistry and Materials Science,Hubei Engineering Uniersity;2.Hubei Proince Key Laboratory of Adanced Welding Technology;3.ChinaHubei Proince Key Laboratory of Adanced Welding Technology;4.China;5.School of Materials Science and Engineering,Lanzhou Jiaotong Uniersity

Clc Number:

TG113

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The GH3536 alloy was prepared by selective laser melting, and was subjected to solution treatment and hot isostatic pressing, respectively. The effects of different heat treatment methods on the microstructure, grain boundary morphology and room temperature tensile behavior of GH3536 alloy were studied. The results show that the microstructure of the SLM sample consists of ultra-fine columnar sub-grains and pool boundary, with defects such as pores and microcracks. The relative density of the alloy increases after solution treatment and hot isostatic pressing, respectively, and the microstructures of the two alloys consist of alternating equiaxed grains of different sizes. However, the HIP sample precipitated the M23C6 phase along the grain boundary, forming a serrated grain boundary. The tensile properties of the SLM samples show obvious anisotropy. The solution treatment can eliminate the anisotropy of the tensile properties of the sample, but the ultimate tensile strength and yield strength are reduced, and the elongation is significantly increased. The HIP sample is similar to the solid solution sample, but its ultimate tensile strength, yield strength and elongation are further improved. Tensile fracture mechanisms of all three alloys are microporous aggregate-type ductile fracture.

    Reference
    Related
    Cited by
Get Citation

[Yan Xiang, Cheng Xiaoyu, Liu Jufeng, Zhong Fei, Wang Shunhua, Zheng Genwen, Liu Hai. Effect of Heat Treatment on Grain Boundary and Tensile Behavior of Selective Laser Melting GH3536 Alloy[J]. Rare Metal Materials and Engineering,2021,50(4):1296~1303.]
DOI:10.12442/j. issn.1002-185X.20200226

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:April 05,2020
  • Revised:July 07,2020
  • Adopted:July 20,2020
  • Online: May 08,2021
  • Published: