Effect of annealing on microstructure and properties of hot deformed TC21 alloy

doi:10.13251/j.issn.0254-6051.2020.03.026

Abstract

Abstract:

The microstructure and properties of TC21 alloy bar after single and double annealing were studied. The results reveal that the deformed α phase is recrystallized and equiaxed to different extents after the single annealing. With the increase of annealing temperature, α phase is equiaxed more clearly and equiaxed α phase is coarsening. After the double annealing, the microstructure is further equiaxed and homogenized. The double annealing process slightly reduces the strength of the alloy, but significantly improves the plasticity of the alloy. After the treatment of 900 ℃×45 min, AC+590 ℃×4 h, AC, the section shrinkage rate and elongation rate of the alloy are increased by 4.11% and 6.71%, respectively.

Key words: TC21 alloy, double annealing, hot deformation, microstructure, mechanical properties

CLC Number:

TG146.23

Yang Chunlin, Zhang Song, Ou Meigui. Effect of annealing on microstructure and properties of hot deformed TC21 alloy[J]. HTM, 2020, 45(3): 133-139.

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