冷丝脉冲GMAW焊接铝的金属转移和显微组织

IF 2.5 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Welding in the World Pub Date : 2025-06-03 DOI:10.1007/s40194-025-02091-6

R. A. Ribeiro, P. D. C. Assunção, V. Sengupta, R. Khan, A. P. Gerlich

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引用次数: 0

摘要

本文比较了5 mm厚AA5052 H-32对接焊缝脉冲气体保护焊（P-GMAW）和冷丝脉冲保护焊（CW-P-GMAW）的焊接效果。采用同步电流和电压采集的高速成像技术对焊接金属转移进行了研究。焊接后，通过射线照相和标准金相检查对接头进行表征。结果证明了CW-P-GMAW焊接AA5052 H-32的可行性。此外，研究结果表明，脉冲电流冷送丝的引入影响了焊接熔池的温度分布，降低了焊接熔池的冷却速度，导致硬度降低，组织粗糙。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Metal transfer and microstructures in aluminum welding using cold wire pulsed GMAW (CW-P-GMAW)

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Metal transfer and microstructures in aluminum welding using cold wire pulsed GMAW (CW-P-GMAW)

This work compares the welding of 5-mm-thick AA5052 H-32 butt welds using pulsed gas metal arc welding (P-GMAW) and cold wire pulsed GMAW (CW-P-GMAW). Welding metal transfer was studied using high-speed imaging in conjunction with synchronized current and voltage acquisition. After welding, the joints were characterized through radiographic examination and standard metallography. The results have successfully demonstrated the feasibility of CW-P-GMAW welding AA5052 H-32. Additionally, the results suggest that the introduction of cold wire feed with pulsed current affects the temperature distribution and reduces the cooling rate of the welding pool accounting for reduced hardness and coarser microstructure.

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来源期刊

Welding in the World METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

4.20

自引率

14.30%

发文量

181

审稿时长

6-12 weeks

期刊介绍： The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.