典型文献
An accelerated aging assisted by electric current in a Fe-Mn-Al-C low-density steel
文献摘要：
An aging method assisted by electric current was applied to a Fe-18Mn-9Al-1C (wt.％) low-density steel. It improves the microstructure and therefore significantly increases both the yield strength and ductility of the steel. This current-assisted aging method can increase the yield strength by 178 MPa and elongation by 1.16 times in only 0.5 min at 450 °C. However, the yield strength is increased only 90 MPa by the traditional aging method (heat conduction) at 450 ℃for 180 min, and the elongation is even decreased from 42.0％ to 31.6％. The obvious improvement in yield strength by the current-assisted aging for a short time is resulted from the fact that the current-assisted aging promotes a rapid precipitation of nano-scale κ-carbides in γ-austenite by reducing the thermodynamic barrier and accelerating the atomic diffusion. This work demonstrates that this current-assisted aging method is significantly time saving and cost-effective for low-density steels, with potential for various industrial applications.
文献关键词：
中图分类号：
作者姓名：
Zhi-gang Wang;Chu-lun Shen;Jian-lei Zhang;Chang-jiang Song;Qi-jie Zhai
作者机构：
Center for Advanced Solidification Technology(CAST),School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China
文献出处：
引用格式：
[1]Zhi-gang Wang;Chu-lun Shen;Jian-lei Zhang;Chang-jiang Song;Qi-jie Zhai-.An accelerated aging assisted by electric current in a Fe-Mn-Al-C low-density steel)[J].中国铸造,2022(05):395-402
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AB值：
0.502347
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