摘要: |
本文通过优化工艺参数改善焊缝成形,研究热输入对CMT堆焊层组织及性能的影响。研究表明,在pulsed-CMT模式下,送丝速度为4m/min时,焊接过程稳定性好,堆焊层润湿性好。焊缝区主要由α-Mg和分布于枝晶间的β-Mg17Al12相组成。 |
关键词: 镁合金;堆焊;组织 |
基金项目: |
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Study on Cladding Process and Microstructure of Magnesium Alloys Employing CMT Welding |
Qu Hongtao, Bu Xianzheng, Hu Yang
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1. Beijing Hangxing Machinery Manufacturing Corporation, Beijing 100013
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Abstract: |
The effects of CMT welding parameters on welding stability were investigated in this paper, and the effects of heat input on the microstructures and properties of cladding were studied. The results showed that under pulsed-CMT mode, WFS of 4 m/min could obtain stable welding process and favorable wetting condition of claddings. The weld zone (WZ) consisted of α-Mg and β-Mg17Al12. |
Key words: AZ31 magnesium alloy;CMT cladding;microstructures |