陈路飞,熊毅,王俊北,路妍,任凤章

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

利用分离式霍普金森压杆(SHPB)装置对原始组织为粒状珠光体的T8钢进行高应变速率变形实验,借助SEM、TEM及显微硬度计对变形后粒状珠光体钢的微观组织和硬度变化进行分析。高应变速率变形条件下的应力-应变曲线表明,随着应变速率的增加,粒状珠光体钢流变应力随之增大,表现出正的应变速率敏感性;冲击区域内的微观组织得到了明显细化,制备出了晶粒尺度在亚微米量级的超微细复相(铁素体+渗碳体)T8钢组织;当应变速率为3078.2 s-1时,铁素体晶粒尺寸为500~700 nm,渗碳体颗粒粒径为100~250 nm,硬度值由原始态的195 HV增至270 HV。

关键词(KeyWords)： T8钢;分离式霍普金森压杆;粒状珠光体;微观组织;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50801021,51201061);; 河南省高等学校青年骨干教师资助项目(2011GGJS-070);; 河南省科技创新杰出人才支持计划项目(144200510009);; 河南省科技攻关计划项目(152102210077);; 河南科技大学科技创新团队资助项目(2015XTD006)

作者(Author): 陈路飞,熊毅,王俊北,路妍,任凤章

DOI: 10.13289/j.issn.1009-6264.2015.11.026

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