热处理工艺对微合金建筑用钢力学性能的影响  

Effect of Heat Treatment Process on Mechanical Properties of Micro-alloy Steel for Construction

作　　者：郑娟[1] 葛文杰[2] 束必清[3] 

机构地区：[1]扬州市职业大学土木工程学院,江苏扬州225000 [2]扬州大学建筑科学与工程学院,江苏扬州225127 [3]扬州工业职业技术学院建筑工程学院,江苏扬州225127

出　　处：《热加工工艺》2016年第16期186-189,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51308490);江苏省自然科学基金项目(BK20130450)

摘　　要：设计了微合金建筑用钢的成分,研究了热处理工艺对微合金建筑用钢力学性能和组织的影响。结果表明:1035℃开轧、805℃终轧且在800℃进行正火处理,此时力学性能最佳,其抗拉强度为562 MPa、屈服强度为470 MPa、伸长率为22.6%,屈强比为0.84。600℃回火前后的显微硬度分别为175 HV0.1和189 HV0.1。The composition of micro-alloy steel for construction was designed. The influences of heat treatment process on mechanical properties and microstructurc of micro-alloy steel for construction were studied. The results show that when the beginning roll temperature is 1035℃, ending roll temperature is 805℃, and the normalizing temperature is 800℃, mechanical properties are the best. The tensile strength is 562 MPa, the yield strength is 470 MPa, the elongation is 22.6%, and the yield tensile ratio is 0.84. The micro-hardness before and after tempering at 600℃ is 175 HV0.1 and 189 HV0.1 respectively.

关 键 词：热处理工艺 合金 建筑钢 力学性能 显微结构 

分 类 号：TG156.4[金属学及工艺—热处理] U465[金属学及工艺—金属学]