苑少强,梁国俐,武会宾

• 1:唐山学院机电工程系
• 2:高效轧制国家工程研究中心

摘要(Abstract)：

利用萃取复型,结合TEM和EDX技术,研究了超低碳Nb-Ti微合金钢中析出相粒子在1300℃保温后的回溶行为。结果表明,基体中存在两类析出相:一类为凝固过程中形成的比较粗大的析出相,另一类为应变诱导下产生的析出相,尺寸比较细小。凝固过程中形成的析出相中富Ti,应变诱导下的细小析出相富Nb。在1300℃回溶时应变诱导析出相不稳定,2 h后基本不存在,而凝固过程中形成的析出相在回溶48 h后,还存在含Nb的(Nb,Ti)(C,N)复合相。在钢中含Ti的情况下,Nb碳氮化物的稳定性大幅提高。

关键词(KeyWords)： 超低碳微合金钢;碳氮化物;溶解;热稳定性

Abstract:

Keywords:

基金项目(Foundation): 河南省自然科学基金-钢铁联合基金项目(E2011105006)

作者(Author): 苑少强,梁国俐,武会宾

DOI: 10.13289/j.issn.1009-6264.2011.s1.030

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