锰和硅添加对重度冷轧及退火后珠光体钢显微组织的影响Influence of Mn and Si on microstructures of pearlitic steels after severely cold rolling and annealing
孙淑华,吕知清,郭明伟,王振华,熊毅,傅万堂
摘要(Abstract):
用扫描电镜(SEM)、透射电镜(TEM)并结合图像分析方法研究了分别添加1wt%Mn和1wt%Si对Fe-0.8C共析珠光体钢重度冷轧及退火后显微组织以及渗碳体颗粒长大动力学的影响。结果表明,Mn和Si的加入可明显抑制重度冷轧及退火过程中珠光体渗碳体颗粒的长大过程,并使其球化程度及尺寸分布均匀性增大;锰细化重度冷轧及退火后珠光体钢渗碳体颗粒的作用效果优于硅;三种试验用钢重度冷轧及退火后渗碳体颗粒长大动力学方程分别为:对于Fe-0.8C钢,d=186.4t0.195;对于Fe-1Si-0.8C钢,d=90.5t0.205;对于Fe-1Mn-0.8C钢,d=85.9t0.166。
关键词(KeyWords): 合金元素;珠光体;渗碳体;冷轧;退火
基金项目(Foundation): 国家自然科学基金钢铁研究联合基金资助项目(50471102)
作者(Author): 孙淑华,吕知清,郭明伟,王振华,熊毅,傅万堂
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