Heat Treatment of Metals ›› 2021, Vol. 46 ›› Issue (7): 187-190.DOI: 10.13251/j.issn.0254-6051.2021.07.036

• PROCESS RESEARCH • Previous Articles     Next Articles

Recovery heat treatment process of small deformed GH3230 alloy

Zhang Yonglu1,2, Ju Quan1,2, Hu Man1, Ma Huiping1,2   

  1. 1. Gaona Aero Material Co., Ltd., Beijing 100081, China;
    2. Beijing Key Laboratory of Advanced High Temperature Materials, Beijing 100081, China
  • Received:2021-03-25 Online:2021-07-25 Published:2021-12-10

Abstract: Microstructure and mechanical properties of the GH3230 alloy after recovery heat treatment at different temperatures under small deformation of 10% and 5% were analyzed and tested. The results show that the 10% cold-deformed alloy can be uniformly recrystallized after recovery heat treatment at 1120-1230 ℃, which is beneficial to fully release the residual stress and ensure that the mechanical properties of the alloy meet the requirements of the indexes. For the 5% cold deformed alloy, the residual stress can be released after recovery heat treatment at 1120-1160 ℃, meanwhile, the critical recrystallization and abnormal grain growth can be avoided, so that the microstructure stability and mechanical properties of the alloy can meet the requirements of the indexes.

Key words: GH3230 alloy, small deformation, recovery heat treatment

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