摘要
通过I&Q&P处理工艺,采用SEM、XRD和拉伸试验手段,研究了低碳硅锰钢C-Si-Mn中Mn元素的配分行为及其配分工艺参数对I&Q&P处理试验钢组织与性能的影响。结果表明:经I&Q&P工艺处理,试验钢室温组织为板条状马氏体和残留奥氏体。随配分时间延长或配分温度的升高,试验钢的抗拉强度总体呈降低趋势,残留奥氏体含量均先增加后减小,伸长率与残留奥氏体量的变化趋势基本一致。800℃等温30 min,试验钢中残留奥氏体含量及伸长率最大,分别为10.02%,24.25%,该参数下的综合性能最佳。
Effect of Mn partitioning behavior on changes of microstructure and properties with partitioning temperature and partitioning time during I＆Q＆P process of a C-Si-Mn low carbon steel were investigated by means of scanning electron microscopy （ SEM）, X-ray diffraction （XRD） and tensile tests. The results show that after I＆Q＆P process, the microstructure at room temperature of the C-Si-Mn low carbon steel is composed of lath martensite and retained austenite. With the partitioning time expanding or the partitioning temperature increasing, the tensile strength of the test steel decreases gradually and the retained austenite content first increases and then decreases. The trend of elongation of the steel is similar to the retained austenite. When isothermal treated at 800 ℃ for 30 rain, the retained austenite content and elongation of the test steel are all the highest, 10.02% and 24.25% , respectively, and the comprehensive properties is the best.
作者
任振全
田亚强
李然
宋进英
魏英立
代鑫
陈连生
Ren Zhenquan Tian Yaqiang Li Ran Song Jinying Wei Yingli Dai Xin Chen Liansheng(Key Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan Hebei 063009, Chin)
出处
《金属热处理》
CAS
CSCD
北大核心
2016年第12期113-116,共4页
Heat Treatment of Metals
基金
国家自然科学基金(51574107)
河北省自然科学基金(E2016209048)
河北省教育厅科研项目(QN2016185)
唐山市科技创新团队培养计划项目(15130202C)
唐山市科学技术研究项目(14130228B)
河北省大学生创新创业训练计划项目(20140081047)
