Effect of welding thermal cycle on microstructure and mechanical properties for A5083P-O and A7N01P-T4 aluminum alloy

YUN Zhonghuang; DAI Zhongchen; JIN Wentao

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Effect of welding thermal cycle on microstructure and mechanical properties for A5083P-O and A7N01P-T4 aluminum alloy
Vol. 48, Issue 3, Pages: 250-254(2018)
Published：2018
DOI：
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DOI：

YUN Zhonghuang, DAI Zhongchen, JIN Wentao. Effect of welding thermal cycle on microstructure and mechanical properties for A5083P-O and A7N01P-T4 aluminum alloy[J]. Eletric Welding Machine2018, 48(3): 250-254. DOI：

摘要

针对铝合金车体生产中焊接热循环对铝合金接头组织性能的影响

选择A5083P-O、A7N01P-T4两种铝合金材料

在相同的焊接环境、拘束条件下

采用相同的焊接参数

经过不同次数焊接热循环后

对试样进行无损检测、金相组织及硬度分析

结果发现A5083P-O、A7N01P-T4材料具有不同的热裂纹倾向性

为后续生产中多次修补提供理论依据。

Abstract

Aiming to investigate the effect of welding thermal cycle on microstructure properties of aluminum alloy welded joints in the production process of aluminum alloy carbody

A5083 P-O and A7 N01 P-T4 aluminum alloys were welded separately by using same welding parameters and various welding thermal cycles in same welding environment and constrain condition. The welded joints were analyzed by means of non-destructive examination

metallography and hardness measurement. The test results showed that the A5083 PO and A7 N01 P-T4 had different hot crack tendency

which provided a theoretical basis for multiple repair in the production.