摘要
在HWI-IFW-130型轴/径向多功能惯性摩擦焊机上,成功实现热轧态与热轧态AMS6308钢、淬火+回火态与淬火+回火态AMS6308钢惯性摩擦焊接.对两种不同热处理状态的焊接接头进行检测分析.结果表明,母材为热轧态的焊接接头,焊缝区为马氏体组织,热力影响区和热影响区为马氏体+贝氏体组织;母材为淬火+回火态的焊接接头,焊缝区为马氏体组织,热力影响区和热影响区为马氏体回火组织.以焊缝为中心,显微维氏硬度呈对称分布,焊缝区显微维氏硬度最高;两种不同热处理状态母材获得的焊接接头,拉伸均断于母材.
Hot-rolled AMS6308 steel and Q-tempered AMS6308 steel were welded on HWI-IFW-130 inertia friction welding machine,respectively. Mechanical properties and microstructures of joints were studied. For the joint welded by hotrolled AMS6308 steel,weld zone is martensite microstructure,heat affected zone and thermo-mechanically affected zone are martensite and bainite microstructures. For the joint welded by Q-tempered AMS6308 steel,the microstructure of weld zone is the same with that by hot-rolled AMS6308 steel,while the microstructure in heat affected zone and thermo-mechanically affected zone are tempered martensite. The microhardness distribution of the joint is symmetrical with the center of weld,and the highest microhardness occurs in weld zone. All fractures occur at the base metal in tensile test.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2015年第7期21-24,114,共4页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(51475196
51075174)
