钒对半高速钢氩弧熔覆层组织及其高温性能的影响  

Influence of Vanadium on the Microstructure and High Temperature Properties of Semi High-Speed steel TIG Cladding Layer

作　　者：张勇[1] 葛泽龙 唐家成 綦秀玲[1] ZHANG Yong;GE Ze-long;TANG Jia-cheng;QI Xiu-ling(College of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《材料保护》2021年第1期23-27,共5页Materials Protection

基　　金：2019年辽宁省教育厅项目(19-1124)资助。

摘　　要：为促进半高速钢轧辊再制造技术的发展,基于半高速钢的合金体系,研究调整氩弧熔覆粉末中钒的含量对增强熔覆层高温性能和改善焊接工艺性的影响规律。通过工艺试验分析钒添加量对焊缝成形性的影响;通过金相观察、XRD物相分析钒的添加对焊缝组织的影响;通过高温抗氧化试验、红硬性试验检测钒的添加对熔覆层高温情况下的工作特性的影响。试验结果表明:钒的添加能够改善熔覆层成形,提高半高速钢熔覆层的高温抗氧化特性、红硬性和热疲劳性能。Aim at promoting the development of semi high-speed steel rolls remanufacturing technology,based on the alloy systems of semi high-speed steel,the influences of vanadium addition in argon arc welding powders on the high-temperature properties and weldability of cladding layer were studied. In addition,the effect of vanadium addition on the formability of welding seam was explored throng welding process test. The means of metallographic observation and XRD were employed to study the effect of vanadium addition on the cladding layer microstructure. Furthermore,high temperature oxidation and red hardness tests were carried out to clarify the effect of vanadium addition on the high temperature properties of cladding layer. Results showed that adding vanadium could modify the formability of cladding layers and improve their high-temperature oxidation resistance,red hardness and thermal fatigue resistance.

关 键 词：氩弧熔覆 半高速钢 钒 高温性能 工艺性 

分 类 号：TG401[金属学及工艺—焊接]