摘要
通过实验室热处理模拟实验,对含磷低硅transformation induced plasticity(TRIP)钢快速退火过程中各个阶段的组织演变行为进行研究,主要研究了不同退火温度对各个阶段组织组成的影响。通过添加P元素降低钢中的Si含量,可改善表面质量,解决镀锌问题,且P价格低廉,成本降低。结果表明:最终组织中的铁素体量降低,贝氏体和马氏体混合物的量增加。经X射线衍射(XRD)分析可知,残余奥氏体量增加,由750℃退火时的12.7%增加至790℃退火时的14.9%。
The low silicon transformation induced plasticity（TRIP） steel with phosphorus addition at every stage of fast annealing process has been studied by heat treatment experiment at lab. The effects of annealing temperatures on microstructure constitute at every stage are mainly studied. The addition of low price element phosphorus can reduce silicon content , improve surface quality,solve galvanizing problem and reduce costs. Results show that the ferrite content decrease ,and the mixture of bainite and martensite content increase at final microstructure. By X-ray diffraction（XRD）analysis,the retained austenite content increases from 12.7%at 750℃annealing to 14.9%at 790℃.
出处
《中国工程科学》
北大核心
2014年第1期48-53,共6页
Strategic Study of CAE
基金
国家自然科学基金资助项目(51174059
U1260204)
国家重点基础研究发展计划"973计划"(2011CB606306)
中央高校基本科研业务费项目(N110407003
N120607001)
关键词
汽车钢
TRIP钢
低硅
快速退火
组织演变
automobile steel
TRIP steel
low silicon
fast annealing
microstructure evolution
