Effect of solution treatment on microstructure and hardness of A286 alloy

doi:10.13251/j.issn.0254-6051.2023.02.035

Abstract

Abstract: Effects of solution treatment temperature (980, 1000, 1020 ℃) and holding time (60, 90, 120 min) on microstructure and hardness of the A286 alloy were studied by means of optical microscope, scanning electron microscope and Rockwell hardness tester. The results show that the hot rolled alloy matrix is a homogeneous recrystallized austenitic grain structure, with primary carbonitrides in it. With the increase of solution treatment temperature and holding time, the recrystallized grains preferentially grow from the surface and gradually expand to the inside, and phosphides with larger size are precipitated on the grain boundary, the hardness of the alloy decreases slightly.

Key words: A286 alloy, solution treatment, microstructure, hardness

CLC Number:

TG156.94

Li Jidong, Wang Yan, Gu Yu, Wang Bin. Effect of solution treatment on microstructure and hardness of A286 alloy[J]. Heat Treatment of Metals, 2023, 48(2): 223-227.

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