METAL INERT GAS WELDING OF 2519-T87 HIGH STRENGTH ALUMINUM ALLOY

作     者：XU Lianghong TIAN Zhiling ZHANG Xiaomu PENG Yun 

作者机构：State Key Laboratory of Advance Steel Process and ProductsCentral Iron ＆ Steel Research Institute Beijing 100081 China Structure Material InstituteCentral Iron ＆ Steel Research Institute Beijing 100081 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2007年第20卷第4期

页      面：32-35页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This project is supported by National Hi-tech Research and Development Program of China(863 Program No.2002AA305402) 

主　　题：High strength aluminum alloy Wire Heat input Shielding gas 

摘      要：20 mm thick plates of 2519-T87 high strength aluminum alloy have been *** effects of the compositions of filler wires,the heat input and the compositions of shielding gas on the mechanical properties and microstructure of the welded joint have been *** results indicate that finer microstructure,better mechanical properties and higher value of hardness of HAZ can be obtained by using lower heat *** use of Ar/He mixed shielding gas has several advantages over pure Ar shielding *** the increase of the proportion of He in the mixed shielding gas, the grain size of the weld metal as well as porosity susceptibility *** the volume ratio of He to Ar reaches 7：3,the porosity and the grain size of weld metal reach the minimum,and the porosity can be further reduced by filling some CO2.