南京理工大学学报（自然科学版）2013，Vol.37Issue(1)：145-149,5.
2219铝合金焊缝组织及其对力学性能的影响
Microstructure and effects of mechanical properties of 2219 aluminum alloy welded joint
摘要
Abstract
Microstructure and mechanism properties of 2219-T87 aluminum alloy TIG weld joint with 10 mm thickness are studied. The test results show that the average yield strength of the weld seam is 49.3% ,the tensile strength is 67. 8% and the elongation after the fracture is 65. 4% of the base metal. Tensile fractures are observed from the micrograms. Micro-hardness is the highest in the weld zone and the lowest on the fusion line and in the heat influenced zone. The hardness of the whole plate is lower than that of the base metal after welding. The corrosion test shows that the corrosion of the weld zone is better than that of the base metal. The research revults show that the performance of 2219 aluminum alloy welding can be improved by mehorating the welding process which can decrease the formation of the fusion zone and heat-influenced zone, and solving the problems of CuAl2 segregation,etc.关键词
2219铝合金/焊接接头/微观组织/力学性能/惰性气体钨极保护焊Key words
2219 aluminum alloy/ welding joints/ microstructures/ mechanism properties/ tungsten inert gas arc welding分类
矿业与冶金引用本文复制引用
薛彩军,许江波,梁珩,张俊苗,林鸿志..2219铝合金焊缝组织及其对力学性能的影响[J].南京理工大学学报（自然科学版）,2013,37(1):145-149,5.基金项目
江苏省自然科学基金(BK2012795) （BK2012795）
中央高校基本科研业务费专项资金资助项目(NO2012081) （NO2012081）
江苏高校优势学科建设工程资助项目 （）
