纳米改性新型建筑钢结构材料的热处理工艺研究  

Research on Heat Treatment Processes of New Nanometer Modified Construction Steel

作　　者：袁志芬[1] 

机构地区：[1]郧阳师范高等专科学校,湖北十堰442000

出　　处：《热加工工艺》2016年第18期228-231,共4页Hot Working Technology

基　　金：湖北省教育厅重点科研项目(2005D0026)

摘　　要：分步淬火和二次回火有助于改善材料的综合性能。采用不同的淬火和回火工艺对纳米改性新型建筑钢进行了热处理。经过显微组织、力学性能和耐腐蚀性能的分析后发现:分步淬火较常规淬火使材料的抗拉强度增加15%、屈服强度增加18%、伸长率增加5%、乙酸盐雾(AASS)试验腐蚀10 d后的质量损失率减少2.73%。纳米改性新型建筑钢结构材料的热处理工艺优选为:980℃×10 min+920℃×20 min分步淬火后220℃×60 min二次回火。Step by step quenching and secondary tempering contribute to the improvement of the comprehensive performance of materials. The heat treatment of new nanometer modified construction steel was carried out by using different quenching and tempering processes. After the analyses of the microstructure, mechanical properties and corrosion resistance properties, it is found that compared with conventional quenching, step by step quenching makes tensile strength of material increase by 15%, yield strength increase by 18%, elongation increase by 5%, and mass loss decreases by 2.73% after AASS corrosion for 10 days. The optimization of the heat treatment process of nanometer modified construction steel is secondary tempering of 220℃×60 min after step by step quenching of 980℃×10 rain＋920℃×20 min.

关 键 词：热处理工艺 分步淬火 纳米改性 建筑钢 二次回火 

分 类 号：TG156.9[金属学及工艺—热处理]