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题名: Characteristics of AZ31 Mg alloy joint using automatic TIG welding
作者: Liu, Hong-tao;  Zhou, Ji-xue;  Zhao, Dong-qing;  Liu, Yun-teng;  Wu, Jian-hua;  Yang, Yuan-sheng;  Ma, Bai-chang;  Zhuang, Hai-hua
发表日期: 2017
摘要: The automatic tungsten-inert gas welding (ATIGW) of AZ31 Mg alloys was performed using a six-axis robot. The evolution of the microstructure and texture of the AZ31 auto-welded joints was studied by optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electron backscatter diffraction. The ATIGW process resulted in coarse recrystallized grains in the heat affected zone (HAZ) and epitaxial growth of columnar grains in the fusion zone (FZ). Substantial changes of texture between the base material (BM) and the FZ were detected. The {0002} basal plane in the BM was largely parallel to the sheet rolling plane, whereas the c-axis of the crystal lattice in the FZ inclined approximately 25A degrees with respect to the welding direction. The maximum pole density increased from 9.45 in the BM to 12.9 in the FZ. The microhardness distribution, tensile properties, and fracture features of the AZ31 auto-welded joints were also investigated.
刊名: INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Liu, Hong-tao,Zhou, Ji-xue,Zhao, Dong-qing,et al. Characteristics Of Az31 Mg Alloy Joint Using Automatic Tig Welding[J]. International Journal Of Minerals Metallurgy And Materials,2017,24(1):102-108.

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