J Shanghai Jiaotong Univ Sci ›› 2016, Vol. 21 ›› Issue (4): 406-410.doi: 10.1007/s12204-016-1739-7
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Yang L.; Huang F.; Guo Z.; Rong Y.; Chen N.
Published:
Abstract: The spinodal composition zone in Al added Fe-Mn-Al-C twinning-induced plasticity (TWIP) steels can be determined by contents of Al and C and aging temperature together, based on the thermodynamic analysis. Precipitation of ordered (FeMn)3AlC carbide by the mechanism of spinodal decomposition occurs in the C-rich and Al-rich zone with low aging temperature. Increase of aging temperature shrinks spinodal composition zone to the high Al and C contents. As a result, the precipitation of (FeMn)3AlC carbide alters from spinodal decomposition to classical nucleation-growth manner gradually. Further calculation indicates that the diffusion of Al can play a key role in determining the growth rate of (FeMn)3AlC carbide at high aging temperature. © 2016, Shanghai Jiaotong University and Springer-Verlag Berlin Heidelberg.
Key words: (FeMn)3AlC carbide; diffusion; spinodal decomposition; thermodynamics; twinning-induced plasticity (TWIP) steel
Yang L.; Huang F.; Guo Z.; Rong Y.; Chen N.. Investigation on the formation mechanism of ordered carbide (FeMn)3AlC in the Al added twinning-induced plasticity steels[J]. J Shanghai Jiaotong Univ Sci, 2016, 21(4): 406-410.
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URL: https://xuebao.sjtu.edu.cn/sjtu_en/EN/10.1007/s12204-016-1739-7
https://xuebao.sjtu.edu.cn/sjtu_en/EN/Y2016/V21/I4/406
