Migration of δ/γ Interface in Low Carbon Steels during Continuous Cooling

被引：0
|
作者：
Qing-chun LI [1 ]
Yong-feng QI [1 ]
Shu XU [1 ]
Chao WANG [1 ]
Guo-wei CHANG [1 ]
机构：
[1] School of Materials Science and Engineering,Liaoning University of Technology
来源：
JournalofIronandSteelResearch(International) | 2014年 / 21卷 / 09期
基金：
中国国家自然科学基金;
关键词：
phase transition; δ/γinterphase boundary; migration; low carbon steel;
D O I：
暂无
中图分类号：
TG142.31 [碳钢];
学科分类号：
080502 ;
摘要：
The δ-ferrite toγ-austenite phase transformation process of low carbon steel was observed in-situ under a confocal scanning laser microscope and the influence of manganese and chromium on the migration ofδ/γinterphase boundary during theδtoγphase transformation was studied.It was found that theδ/γinterphase boundary becomes unstable with the decrease of temperature,from planar to curved morphology during theδtoγphase transformation of Fe-0.08 Csteel and Fe-0.08C-0.8 Mn steel.But in Fe-0.08C-0.8Cr steel,theδ/γinterphase boundaries are stable with planar morphology during the wholeδ-ferrite toγ-austenite transformation.The destabilization ofδ/γinterphase boundary in Fe-0.08 C and Fe-0.08C-0.8Mn steels results from high degree of supercooling and sub-boundaries inγ,respectively.The stabilization ofδ/γinterphase boundary in Fe-0.08C-0.8Cr steel results from the slow diffusion rate of carbon atom induced by the addition of chromium.
引用
收藏
页码：855 / 861
页数：7
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