Ferrite Decarburization of High Silicon Spring Steel in Three Temperature Ranges

Archives of Metallurgy and Materials

Y.Z. Liu¹  F. Zhao¹  C.L. Zhang¹ 

[1] School of Mate Rials Science and Engineering, University of Science and Technology Beijing, Beijing

关键词: Keywords: Surface decarburization;    Steel;    Oxidation;    Carbon diffusion;   

DOI  :  10.1515/amm-2016-0252

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Surface decarburization of high silicon spring steel in ambient air was studied. The experimental results confirmed the decarburized mechanism under AC1 temperature, in the temperature range of AC1-AC3 and AC3-G. Under AC1 temperature, pearlite spheroidization and surface decarburization are carried out simultaneously and pearlite spheroidization is reinforced. Considering the oxidation loss depth, the “true ferrite decarburized depth” at 850 °C (AC3-G) is still smaller than that at 760°C (AC1-AC3). That is because an “incubation period” must pass away before ferrite decarburization occurs in the temperature range of AC3-G, and the ferrite decarburized rate is limited to being equal to the partial decarburized rate.

【 授权许可】

Unknown