理化检验-物理分册2024，Vol.60Issue(8)：16-22,7.DOI:10.11973/lhjy-wl230366
冷变形对超低碳贝氏体钢中逆转变奥氏体的影响
Effect of cold deformation on reversed austenite in ultra-low carbon bainitic steel
摘要
Abstract
The effects of deformation on the reversed austenite and mechanical properties of ultra-low carbon bainitic steel were studied by means of hardness test,tensile test,metallographic examination,X-ray diffraction test,transmission electron microscopy and energy spectrum analysis.The results show that the hardness and strength of ultra-low carbon bainitic steel increased significantly with the increase of cold rolling reduction.The volume fraction of austenite in ultra-low carbon bainitic steel gradually increased from 0.4%to 14.85%when the deformation was 90%.The reversed austenite in the steel was mainly distributed at the grain boundary,and its morphology changed from film-like to block-like.The mass fraction of Ni and Mn in austenite decreased with the increase of deformation.The mass fraction of Ni decreased from 59%to 11.64%when the deformation was 90%,and the mass fraction of Mn decreased from 16%to 3.48%when the deformation was 90%.关键词
超低碳贝氏体钢/冷轧变形量/逆转变奥氏体/Ni元素和Mn元素/形态Key words
ultra-low carbon bainitic steel/cold rolling reduction/reverse austenite/Ni element and Mn element/form分类
矿业与冶金引用本文复制引用
杨颖,许媛媛,潘诗良,王泽民..冷变形对超低碳贝氏体钢中逆转变奥氏体的影响[J].理化检验-物理分册,2024,60(8):16-22,7.基金项目
国家重点研发计划项目(NO.2017YFB0304501) （NO.2017YFB0304501）
上海科委项目(16090503600) （16090503600）
