Effect of Baking Process on Microstructures and Mechanical Properties of Low Silicon TRIP Steel Sheet With Niobium

被引：0
作者：
TANG ZhengyouDING HuaDING HaoCAI MinghuiDU LinxiuCollege of Materials and MetallurgyNortheastern UniversityShenyang LiaoningChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang LiaoningChina [1 ,2 ,1 ,2 ,1 ,1 ,2 ,1 ,110004 ,2 ,110004 ]
机构：
来源：
JournalofIronandSteelResearch(International) | 2010年 / 17卷 / 07期
关键词：
TRIP steel sheet; baking process; microstructure; mechanical property; bake-hardening;
D O I：
10.13228/j.boyuan.issn1006-706x.2010.07.013
中图分类号：
TG142.1 [钢的组织与性能];
学科分类号：
080502 ;
摘要：
After 2% predeformation,the baking treatment with different schedule was carried out for low silicon TRIP steel sheet with niobium.The effects of baking temperature and time on microstructures and mechanical properties were investigated.The results showed that with increasing the baking temperature and time,the volume fraction of retained austenite decreases,and the volume fraction of tempered martensite increases;as baking temperature ranges from 80 ℃ to 170 ℃,the bake-hardening(BH)value increases obviously,while from 170 ℃ to 230 ℃,the variation of BH value is very slight;as baking time ranges from 2 min to 20 min,the BH value increases significantly,while the BH value decreases when baking time exceeds 20 min.So that when the baking temperature is 170 ℃ and the baking time is 20 min,the low silicon TRIP steel sheet exhibits good bake-hardening behavior,and the highest BH value is above 70 MPa.
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页码：68 / 74
页数：7
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