铸造技术2016，Vol.37Issue(9)：1845-1848,4.DOI:10.16410/j.issn1000-8365.2016.09.013
不同碳含量对中碳低合金钢分级等温淬火组织与性能的影响
Influence of Carbon Content on Microstructure and Mechanical Properties of Medium Carbon Steel During Progressive Isothermal Quenching
摘要
Abstract
Taking Si and Mn alloy steel as the research object,the influence of progressive isothermal quenching on the microstructure and properties of the test steel with different carbon contents were investigated.Meanwhile,the relationship between bainite,martensite and mechanical properties of the steel are also studied.The results show that the increase of carbon content in the steel decreases the contents of lower bantite,increases martensite contents,improves the hardness and reduces the toughness of the test steel;the reduce of bainite content or the increase of martensite content in the medium carbon steel can enhance the hardness of the steel but with a reduce of toughness.When containing 0.48％～0.50％ carbon (containing 30～40％ lower bainite and 40～50％ martensite),the bainite/martensite structure possess a good matching in hardness and toughness,and the material presents an excellent mechanical properties.关键词
中碳低合金钢/含碳量/贝/马复相组织/金相Key words
medium carbon low alloy steel/carbon content/bainite/martensite mixed microstructure/metallography分类
矿业与冶金引用本文复制引用
毕金凤,李祖来,山泉,蒋业华,韦贺,焦岩..不同碳含量对中碳低合金钢分级等温淬火组织与性能的影响[J].铸造技术,2016,37(9):1845-1848,4.基金项目
云南省科学技术厅项目(619320130010) （619320130010）
