预热温度对铝镁合金厚板焊接接头组织与力学性能的影响

详细信息

Effect of Preheating Temperature on Microstructure and Mechanical Properties of Aluminium-magnesium Alloy Thick Plate Welded Joint

摘要: 研究了不同预热温度下5383铝镁合金50 mm厚板焊接接头的力学性能、断口形貌及金相组织。试验结果表明,采用较低的预热温度,虽能实现焊缝的良好成型,内部质量优,但其力学性能偏低。较低的预热温度会导致熔池温度偏低,使母材中大量存在的富FeMn相不能完全熔化而出现偏聚,从而导致焊缝局部塑性和强度变差。
- 5383 /
- 铝合金 /
- 板材 /
- 焊接 /
- 预热温度
Abstract: Mechanical properties, fracture morphology and metallographic structure of 50 mm thick 5383 aluminum-magnesium alloy welded joints with different preheating temperatures were studied. The results showed that although it could be achieved good weld forming and excellent internal quality with lower preheating temperature, the mechanical properties were relatively lower. Analysis results showed that low preheating temperature led to low temperature of welding pool, so lots of FeMn rich phases in aluminum alloy could not melt completely. The remaining FeMn rich phase segregated, which caused the deterioration of local plasticity and strength of welded joints.
- 5383 /
- aluminum alloy /
- plate /
- weld /
- preheating temperature

[1]	陈澄,薛松柏,孙乎浩,等.5083铝合金TIG焊接头组织与性能分析[J].焊接学报,2014,35(1):37-40.
[2]	宫博.船用5083铝合金TIG焊工艺研究[J].机电技术,2012,35(4):121-123.
[3]	BANG K S,KIM W Y.Estimation and prediction of HAZ softening in thermomechanically controlledrolled and accelerated-cooled steel[J].Welding Research,2002,81(8):174-179.
[4]	徐学光.造船的"第二次现代化"[J].江苏科技大学学报(社会科学版),2008,8(1):39-44.
[5]	崔立.铝合金舰船结构设计中相关问题探讨[J].船海工程,2008,37(6):36-37.
[6]	POPOVIĆM,ROMHANJI E.Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content[J].Journal of Materials Processing Technology,2002,125-126:275-280.
[7]	王东,何长树,王浩,等.国产与进口5183焊丝及焊接接头组织与性能[J].东北大学学报(自然科学版),2013,34(1):80-84.
[8]	张利国,姬书得,邹爱丽,等.焊接工艺参数对5383铝合金搅拌摩擦焊接头耐腐蚀性的影响[J].机械工程学报,2011,47(2):80-84.

1.	王腾达，李利，刘海彬，袁晓冬，张先锋，王鹏云. 1561铝合金厚板力学性能不均匀性研究. 热加工工艺. 2024(04): 75-79 . 百度学术
2.	梁镇强. 铝镁合金焊接气孔的探究与对策. 世界有色金属. 2024(11): 28-30 . 百度学术
3.	高翔，许祥平，刘兆龙，刘坤，邹家生. 厚板5083铝合金MIG焊工艺与性能研究. 江苏科技大学学报(自然科学版). 2024(04): 36-42 . 百度学术