铸造技术2017，Vol.38Issue(12)：2809-2812,4.DOI:10.16410/j.issn1000-8365.2017.12.005
两相区退火时间对低碳硅锰贝氏体钢组织与性能的影响
Effect of Intercritical Annealing Time on Microstructure and Mechanical Properties of a Low Carbon Si-Mn Bainitic Steel
摘要
Abstract
The Mn partitioning in the intercritical annealing (I&Q) process and the effect of Mn partitioning time in I&Q&PB process on microstructure and mechanical properties of a low carbon Si-Mn steel were analyzed.The results show that the Mn element diffuses from the ferrite to the austenite in the I&Q process.During the I&Q&PB process,when the holding time of intercritical is 5～10 min,the microstructure is mainly granular bainite;when reaching 20-60 min,with the prolongation of holding time,it is mainly granular structure;dispersive arrangement of M/A and grain boundaries gradually appear in the massive M/A leading to its tensile strength is not change significantly.In addition,the elongation tends to increase first and then decrease as a result of the retained austenite stability.关键词
低碳硅锰钢/I&Q&PB工艺/两相区退火时间/显微组织/力学性能Key words
low carbon Si-Mn steel/I&Q&PB process/intercitical annealing time/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
刘洁,张明山,贾鹏瑶,杨润潭,段红彪,魏英立,田亚强..两相区退火时间对低碳硅锰贝氏体钢组织与性能的影响[J].铸造技术,2017,38(12):2809-2812,4.基金项目
国家级大学生创新创业训练计划(201510081023),河北省自然科学基金项目(E2016209048)和河北省高等学校科学技术研究项目(QN2016185)资助 （201510081023）
