工程科学学报2016，Vol.38Issue(12)：1741-1746,6.DOI:10.13374/j.issn2095-9389.2016.12.012
等温温度对超细贝氏体钢组织演变规律的影响
Effect of austempering temperature on the microstructure evolution of ultrafine bainite steel
摘要
Abstract
The isothermal transformation kinetics of experimental steel was studied by the thermal expansion method.Ultrafine bainite was obtained by austempering at low temperature.The microstructure was quantificationally analyzed by scanning electron microscopy,transmission electron microscopy and X-ray diffraction.The results show that microstructure of the experimental steel is composed of a large number of ultrafine lath bainite ferrite and thin film austenite.The spacing of the bainitic lath is about 60 nm and the hardness is about HBW 610 by austempering at 210 ℃.The final microstructure and properties depend on the temperature and holding time for austempering.The holding time for fully transformed bainite increases at a lower austempering temperature.关键词
钢热处理/等温淬火/贝氏体/组织演变/定量分析Key words
steel heat treatment/austempering/bainite/microstructural evolution/quantitative analysis分类
矿业与冶金引用本文复制引用
武会宾,巨彪,车英建..等温温度对超细贝氏体钢组织演变规律的影响[J].工程科学学报,2016,38(12):1741-1746,6.基金项目
中国高技术研究发展计划资助项目(2012AA03A508) （2012AA03A508）
自然科学基金资助项目(51474031) （51474031）
中央高校基本科研业务费资助项目(FRF-UM-15-001) （FRF-UM-15-001）
