Effect of V on microstructure and tensile properties of high carbon pearlite steel

doi:10.13251/j.issn.0254-6051.2021.03.029

Abstract

Abstract: The high carbon steel with vanadium mass fraction of 0%-0.13% was designed and smelted. The effect of vanadium content on the structure and tensile properties of high carbon pearlite steel was studied by means of metallographic microscope, scanning electron microscope, electron backscattering and tensile test. The results show that vanadium can improve the structure uniformity and increase ferrite content, and reduce the grain size, but when the vanadium content exceeds 0.08%, the grain refinement effect is weakened. When the mass fraction of vanadium is 0%-0.13%, the relationship between the pearlite lamellar spacing and strength is close, and the corresponding relationship is obtained. The plasticity of the tested steel is not sensitive to the vanadium content. When the vanadium content does not exceed 0.08%, the plasticity is slightly increased, otherwise, the plasticity is reduced.

Key words: vanadium content, high carbon steel, microstructure, strength, plasticity

CLC Number:

TG142.3

Wan Zhijian, Liu Xuehua, Zhao Hai, Jiang Bo, Zou Qiang. Effect of V on microstructure and tensile properties of high carbon pearlite steel[J]. Heat Treatment of Metals, 2021, 46(3): 140-145.

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