脉冲频率对az31b镁合金gta焊接接头熔合区特性的影响

Q4 Engineering

Academic Journal of Manufacturing Engineering Pub Date : 2020-06-01 DOI:10.37255/jme.v15i2pp50-53

Subravel V

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引用次数: 0

摘要

本文试图研究焊接对脉冲电流钨极气弧焊AZ31B镁合金接头熔合特性的影响。采用不同的焊接速度(105 mm/min ~ 145 mm/min)制备了5个接头。通过研究发现，与其他接头相比，使用135 mm/min焊接速度制造的接头具有更好的拉伸性能。熔合区晶粒细、硬度高，析出相分布均匀是提高接头抗拉性能的主要原因

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INVESTIGATION OF PULSE FREQUENCY ON FUSION ZONE CHARACTERISTICS OF GTA WELDED AZ31B MAGNESIUM ALLOY JOINTS

In this investigation an attempt has been made to study the effect of welding on fusion characteristics of pulsed current gas tungsten arc welded AZ31B magnesium alloy joints. Five joints were fabricated using different levels of welding speed (105 mm/min –145 mm/min). From this investigation, it is found that the joints fabricated using a welding speed of 135 mm/min yielded superior tensile properties compared to other joints. The formation of finer grains and higher hardness in fusion zone and uniformly distributed precipitates are the main reasons for the higher tensile properties of these joints

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来源期刊

Academic Journal of Manufacturing Engineering Engineering-Industrial and Manufacturing Engineering

CiteScore

0.40

自引率

0.00%

发文量