汽油机EGR用超纯铁素体J444E不锈钢高温性能研究  

Research on High Temperature Performance of Ultrapure Ferrite J444E Stainless Steel for EGR in Gasoline Engine

作　　者：李玉峰[1] 王长波 潘吉祥[1] 靳塞特[1] LI Yufeng;WANG Changbo;PAN Jixiang;JIN Saite(Gansu Jiu Steel Group Hongxing Iron and Steel Co.Ltd.,Iron and Steel Research Institute,Jiayuguan 735100,China)

机构地区：[1]甘肃酒钢集团宏兴钢铁股份有限公司钢铁研究院,甘肃嘉峪关735100

出　　处：《甘肃冶金》2024年第3期97-101,共5页Gansu Metallurgy

摘　　要：根据汽油机EGR冷却器工况特性和对材料的要求,开发出适应复杂环境下性能优良、成本低廉的超纯铁素体不锈钢材料J444E钢。通过对200~630℃、900~1050℃中高温力学性能及900~1050℃不同温度下100~500 h不同时间及900℃钎焊前后高温氧化性能和氧化层的试验研究和分析,表明该材料在工况环境下具有良好的力学和抗氧化性能。According to the working characteristics and material requirements of EGR coolers of gasoline engines,the ultra-pure ferritic stainless steel J444E steel with excellent performance and low cost is developed.Through the experimental research and analysis of the mechanical properties of 200~630℃,900~1050℃and the high temperature oxidation properties and oxide layers of 100~500 h at different temperatures of 900~1050℃and before and after brazing at 900℃,the results show that the material has good mechanical and antioxidant properties under working conditions.

关 键 词：EGR冷却器 J444E钢 高温力学性能 高温氧化性能 

分 类 号：TG142.4[一般工业技术—材料科学与工程]