Superior mechanical properties of 40Cr steel obtained by quenching and microstress relieving under electropulsing
Superior mechanical properties of 40Cr steel obtained by quenching and microstress relieving under electropulsing
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电脉冲淬火和消除微应力获得 40Cr 钢的优异机械性能
DOI:
10.1016/j.msea.2019.138782
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发表时间:
2020-01
期刊:
影响因子:
--
通讯作者:
W. Jiang
中科院分区:
文献类型:
--
作者:
P. Yin;H. Zang;Y. Zhao;C. Wu;X. Xu;D. Pan;W. Jiang
High strength (the yield strength and ultimate tensile strength are 1920 ± 17 MPa and 2241 ± 39 MPa, respectively) and good ductility (15.2 ± 1.1%) are achieved simultaneously in 40Cr steel via electropulsing quenching (EQ) and tempering (ET). It was found that EQ contributes to ultra-fine martensite with high dislocation density and grain rotations (<110> texture distributed along the current direction and large Schmid factor). Meanwhile, ET is insufficient to modify the orientation, while it makes a rapid relief of micro residual stress without significantly decreasing the dislocation density. Compared to the conventional heat treatment, it provides a promising approach for enhancing the mechanical properties of steels in a short time.
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