陈京京,赵征志,汪志刚,赵爱民,叶洁云

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

通过SEM、TEM、XRD和EBSD等技术研究了连续退火工艺对深冲双相(DP)钢组织性能的影响。结果表明:深冲DP钢热轧板中存在大量的弥散(Nb,Ti)(C,N)等析出粒子,有效固定住C、N间隙原子。连续退火过程中,快速加热,可减少回复阶段变形储能的释放,提高有利再结晶织构的形核率;慢速加热,可促进碳氮化合物的回溶,降低弥散析出相对再结晶织构的不利作用;采用先快速后慢速分段式加热工艺,以再结晶开始温度为分界点,既充分发展深冲织构,又确保双相结构,得到退火板性能为:抗拉强度485 MPa,伸长率超过30%,r值达到1.3。

关键词(KeyWords)： 深冲双相钢;加热工艺;显微组织;力学性能;织构

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金资助(FRF-TP-10-001A);; 国家自然科学基金资助项目(50904006)

作者(Author): 陈京京,赵征志,汪志刚,赵爱民,叶洁云

DOI: 10.13289/j.issn.1009-6264.2014.03.025

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