Effect of I&Q&P process on microstructure and properties of high-boron iron-based wear-resistant alloy

doi:10.13251/j.issn.0254-6051.2020.07.001

Abstract

Abstract: Effect of I&Q&P process on the microstructure and properties of high-boron iron-based wear-resistant alloys was studied by means of optical microscope(OM), scanning electron microscope(SEM), X-ray diffraction(XRD) and rockwell hardness tester. The results show that the as-cast microstructure of the high-boron iron-based alloys consists of ferrite, martensite, retained austenite and eutectic boride. The boride is mainly Fe₂B and Fe₂₃(B,C)₆. After treated by I&Q&P process, the volume fraction of retained austenite in the alloys is increased from 10.0% to 16.8%, the impact absorbed energy of the alloy is increased from 3.76 J to 6.80 J, the hardness value is decreased from 59.3 HRC to 54.0 HRC, and a new boride Fe₃ (B,C) is generated. At the same time, the wear resistance of the alloy is significantly improved.

Key words: high-boron iron-based wear-resistant alloy, as-cast microstructure, I&, Q&, P process, retained austenite, wear resistance

CLC Number:

TG156.1

Wang Kai, Wu Zhifang, Wu Run, Li Mingwei. Effect of I&Q&P process on microstructure and properties of high-boron iron-based wear-resistant alloy[J]. Heat Treatment of Metals, 2020, 45(7): 1-6.

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