Tungsten inert gas weld was carried out on super-light magnesium-lithium alloy plates with a thickness of 2 mm, using argon gas as a protecting atmosphere. The microstructure and mechanical properties of the welded jo...Tungsten inert gas weld was carried out on super-light magnesium-lithium alloy plates with a thickness of 2 mm, using argon gas as a protecting atmosphere. The microstructure and mechanical properties of the welded joints were investigated. The results indicate that the microstructure in the fusion zone is fine, and the microstructure in the heat-affected zone is coarser than the parent metal. The tensile strength of the welded joint is about 84% that of the parent metal. The fracture occurs in a mixed type of toughness and brittleness in the heat-affected zone. During the welding process, aluminum and cerium are enriched at grain boundaries in the fusion zone.展开更多
基金supported by the National Natural Science Foundation of China(Nos.52174362,51975207)Natural Science Foundation of Hunan Province,China(No.2023JJ10020)+1 种基金Xiangtan Special Project for Building a National Innovative City,China(No.CG-YB20221043)Yancheng“Talent Plan of Yellow Sea Pearl”for Leading Talent Project,China。
基金supported by the National Natural Science Foundation of China(No.52071093,51871069)the Fundamental Research Funds for the Central Universities,China(No.3072021CF1008)the Open Funds of the State Key Laboratory of Rare Earth Resource Utilization,China(No.RERU2020012)。
基金Project (51001034) supported by the National Natural Science Foundation of ChinaProject (208181) supported by the Key Project of Chinese Ministry of Education+1 种基金Projects (2008AA4CH044, 2009AA1AG065, 2010AA4BE031) supported by the Key Project of Science and Technology of Harbin City, ChinaProject (HEUCF101001) supported by the Fundamental Research Funds for the Central Universities, China
文摘Tungsten inert gas weld was carried out on super-light magnesium-lithium alloy plates with a thickness of 2 mm, using argon gas as a protecting atmosphere. The microstructure and mechanical properties of the welded joints were investigated. The results indicate that the microstructure in the fusion zone is fine, and the microstructure in the heat-affected zone is coarser than the parent metal. The tensile strength of the welded joint is about 84% that of the parent metal. The fracture occurs in a mixed type of toughness and brittleness in the heat-affected zone. During the welding process, aluminum and cerium are enriched at grain boundaries in the fusion zone.
