汽车排气管用Nb-Ti铁素体不锈钢在高温时效过程中的力学性能变化  

Mechanical Properties of Ni-Ti Ferritic Stainless Steel After High Temperature Aging

作　　者：铁争鸣 

机构地区：[1]长沙理工大学汽车工程学院,湖南长沙410000 [2]青海交通职业技术学院汽车工程系,青海西宁810028

出　　处：《铸造技术》2015年第1期74-76,共3页Foundry Technology

摘　　要：对含Nb-Ti和铌铁素体不锈钢进行高温时效和固溶处理,通过高温拉伸试验研究其高温力学性能变化。结果表明,随着时效时间的延长,铌钢的高温屈服强度下降很快,而Nb-Ti钢的高温屈服强度并没发生较大变化。The high-temperature mechanical properties of Nb-Ti and niobium ferritic stainless steel after high temperature aging were studied by high-temperature tension test. The results show that the high-temperature yield strength of niobium ferritic stainless steel decrease rapidly with increase of aging times, while the high-temperature yield strength of Nb-Ti ferritic stainless steel is not obvious changes.

关 键 词：铁素体不锈钢 时效处理 高温屈服强度 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG156.92[金属学及工艺—金属材料]