Precipitation Behavior of FeTiP in Ti-added Interstitial Free High Strength Steels

被引：0
|
作者：
Juan JIA [1 ]
Wei-wei ZHU [2 ]
Xin-li SONG [1 ]
Ze-xi YUAN [1 ]
机构：
[1] The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology
[2] Department of Materials Science and Engineering,South University of Science and Technology of China
来源：
Journal of Iron and Steel Research(International) | 2016年 / 23卷 / 07期
基金：
中国国家自然科学基金;
关键词：
interstitial free high strength steel; FeTiP precipitation; critical annealing; formation mechanism;
D O I：
暂无
中图分类号：
TG156.2 [退火]; TG161 [钢的热处理];
学科分类号：
080201 ; 080503 ;
摘要：
The precipitation behavior of FeTiP in interstitial free high strength(IFHS)steels has been studied by using a transmission electron microscope(TEM).The results show that the TiC particles,appearing at earlier stage,are more stable than the FeTiP ones during recrystallization annealing at the two given temperatures(810℃ and 840℃).Therefore,the FeTiP particles can only be observed in the steels with sufficient amount of Ti.There is a critical forming time for the FeTiP,which is between 90-120 sat 810 ℃ and 60-90 sat 840 ℃.The precipitation of FeTiP involves two steps,i.e.the formation of FeTi precursors and the diffusion of P.The former step determines the reliance of Ti content for the precipitation of FeTiP,whereas the latter step leads to the difference in the critical annealing time.
引用
收藏
页码：692 / 698
页数：7
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