理化检验-物理分册2024，Vol.60Issue(6)：59-62,4.DOI:10.11973/lhjy-wl230179
2219铝合金箱底法兰焊缝条状缺陷产生原因
Causes of strip defects in flange weld of 2219 aluminum alloy box bottom
武英英 1许恒庭 1姚文德 1刘维丽 1陈莉 1杨楠1
作者信息
- 1. 上海航天精密机械研究所,上海 201600
- 折叠
摘要
Abstract
In the radiographic testing of a certain type of box bottom flange weld,it was found that there were strip crack defects in the weld area.The causes of the crack defects were analyzed by means of macroscopic observation,chemical composition analysis,mechanical property test,metallographic examination,scanning electron microscope and energy spectrum analysis.The results show that in the process of flange welding,the local welding line energy input was too large,which made the low melting point eutectic phase located in the fusion line and adjacent to the base metal near the weld zone appeared intergranular liquefaction.Under the combined action of structural stress and thermal stress,strip defects were produced in the weld.关键词
2219铝合金/法兰/条状缺陷/晶间液化/显微组织/力学性能Key words
2219 aluminum alloy/flange/strip defect/intercrystalline liquefaction/microstructure/mechanical property分类
机械制造引用本文复制引用
武英英,许恒庭,姚文德,刘维丽,陈莉,杨楠..2219铝合金箱底法兰焊缝条状缺陷产生原因[J].理化检验-物理分册,2024,60(6):59-62,4.
