Behavior of martensite reverse transformation and austenite recrystallization of cold-rolled 304 stainless steel

doi:10.13251/j.issn.0254-6051.2021.07.010

Abstract

Abstract: Cold-rolled 304 stainless steel was annealed at 750-800 ℃ for 78-127 s, the microstructure evolution was investigated by means of metallographic microscope (OM), scanning electron microscope (EBSD) and X-ray diffractometer (XRD), and the tensile properties were determined. The results show that diffusion-type and shear-type martensite reverse transformation and austenite recrystallization occur in the tested steel during isothermal annealing. With the increase of annealing temperature and holding time, the reverse transformation of martensite and austenite recrystallization are gradually completed, the yield strength of the tested steel decreases but the elongation after fracture increases.

Key words: austenitic stainless steel, martensite reverse transformation, recrystallization, tensile properties

CLC Number:

TG142.25

Zhang Mei, Sun Guosheng, Qin Dongyang, Du Linxiu. Behavior of martensite reverse transformation and austenite recrystallization of cold-rolled 304 stainless steel[J]. Heat Treatment of Metals, 2021, 46(7): 51-55.

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