Solution behavior of copper-containing super austenitic stainless steel

doi:10.13251/j.issn.0254-6051.2020.11.013

Abstract

Abstract: According to Thermo-Calc thermodynamic calculation software, the solution temperature of the copper-containing super austenitic stainless steel was drawn up between 1000-1200 ℃, and the holding time was 60 min. The influence of solution temperature on microstructure, precipitated phase and inclusion of the copper-containing super austenitic stainless steel was studied by means of metallography microscope, SEM and EDS. The results show that Cu can promote the recrystallization and precipitated phase's dissolution of the tested steel, and the precipitated phase is σ phase when solution treated at above 1000 ℃. The inclusions in the tested steel are mainly magnesium aluminum oxides and sulfides. It is determined that the best solution treatment temperature of the tested steel with trace Cu is 1200 ℃.

Key words: super austenitic stainless steel, Cu, solution treatment, precipitated phases, inclusions

CLC Number:

TG161

Li Bingbing, Chen Haitao, Lang Yuping, Qu Huapeng, Feng Hanqiu, Tian Zhiling, Chen Qingming. Solution behavior of copper-containing super austenitic stainless steel[J]. Heat Treatment of Metals, 2020, 45(11): 68-72.

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