电焊机2011，Vol.41Issue(11)：44-46,83,4.
一、二次补焊对高速列车用铝合金焊接接头疲劳性能的影响
Influence on fatigue performance of once and twice repairing welding of 6082 aluminum ahoy for high speed trains
摘要
Abstract
6082 aluminum alloy is the main material of high speed train body.While welding,it's easy to generate porosity and crack defects and this makes repairing welding nessary.Futher research on the process of repairing welding and the times of repairing welding influence on fatigue performance,then determinating the reasonable repairing welding process and repairing welding times has very important practical significance for impoving the manufacturing level and lowering the production cost of our countries' high speed train.This paper have researched the fatigue performance of 6082 aluminum alloy welded joints of once-repairing welding and second-repairing welding through fatigue test,comparing with the fatigue strength of non-repairing welding connectors.The results show that after once-repairing welding,the median fatigue strength decreases significantly,while the reduce tendency of fatigue limit difference between second-repairing welding and once-repairing welding is slightly;second-repairing welding has certain effect on the fatigue performance of 6082 aluminum alloy welded joints.关键词
6082铝合金/补焊/焊接接头/疲劳性能Key words
6082 aluminum alloy/repairing welding/welded joints/fatigue performance分类
矿业与冶金引用本文复制引用
钮旭晶,许鸿吉,刘春宁,谢明,鲁二敬..一、二次补焊对高速列车用铝合金焊接接头疲劳性能的影响[J].电焊机,2011,41(11):44-46,83,4.基金项目
国家科技支撑计划资助项目(2009BAG12A04-B02) （2009BAG12A04-B02）
