A novel rotating wire GMAW process to change fusion zone shape and microstructure of mild steel

作者：Zhang Hongtao^*; Chang Qing; Liu Jihou; Lu Hao; Wu Hui; Feng Jicai

来源：Materials Letters, 2014, 123: 101-103.

DOI：10.1016/j.matlet.2014.03.018

• Welding
• Microstructure
• Solidification
• Wire autorotation motion

In this paper, traditional gas metal arc welding process was modified to change the fluid flow in the molten pool by the rotary motion of filler metal (wire) accompanied by downward feeding process. The rotary motion of the wire transferred additional momentum into weld pool and bestowed the latter with rotating fluid flow characteristics. The rotating fluid flow of the weld pool decreased the penetration of the weld and refined the weld microstructure directly. The finer microstructure of the weld noticeably increased the tensile strength of the weld metal.

• 出版日期2014-5-15
• 单位哈尔滨工业大学