电焊机2024，Vol.54Issue(10)：116-123,8.DOI:10.7512/j.issn.1001-2303.2024.10.14
高强铝合金焊接对板材性能的影响
Effect of High-strength Aluminum Alloy Welding on the Properties of Aluminum Alloy Plate
王千瑞 1居晓锋 1李振华 1陈春鑫 2周枫 2毕建国2
作者信息
- 1. 哈焊所华通(常州)焊业股份有限公司,江苏 常州 213102
- 2. 常州全通特种焊材有限公司,江苏 常州 213107
- 折叠
摘要
Abstract
High-strength aluminum alloy plates can experience a decrease in performance and a reduction in service life due to the presence of the heat-affected zone(HAZ)during the welding process.To investigate the effects of temperature testing on high-strength aluminum alloy plates and to optimize welding process parameters and plate selection,a systematic study was conducted on the temperature gradient in the HAZ and the interlayer temperature.Three methods were employed for heating simulation tests on the high-strength aluminum alloy plates:local heating,homogenized heating simulation,and in-terlayer temperature simulation in the HAZ.Comparative analyses were conducted on the microhardness,strength,elonga-tion,microstructure,and grain size of the plates at different temperatures.The study found that the hardness of the high-strength aluminum alloy plates first increased and then decreased with the rise in temperature,with 500℃being the inflec-tion point temperature for solid solution strengthening.Solid solution treatment could enhance the mechanical properties of the plates,but excessively long solution treatment times could lead to coarse grains and reduce the strengthening effect.Dur-ing welding,the HAZ affected the plate properties within approximately 6 mm,and beyond 9 mm,the plate properties exhib-ited a gradient distribution.Adjusting the local heating simulation process could homogenize the gradient distribution of ther-mal field energy during welding,resulting in aluminum alloy plates with excellent post-welding performance distribution.关键词
高强铝合金/受热模拟/热影响区/温度试验/焊接工艺Key words
high-strength aluminum alloy/thermal simulation/heat affected zone/temperature test/welding process分类
矿业与冶金引用本文复制引用
王千瑞,居晓锋,李振华,陈春鑫,周枫,毕建国..高强铝合金焊接对板材性能的影响[J].电焊机,2024,54(10):116-123,8.
