论文部分内容阅读
日本已有许多台没有熔接缝的铝合金车辆 ,欧洲的铁道车辆生产厂家正在设法利用 1 991年发明的摩擦搅拌焊接技术并从中获取经济利益
There are many aluminum alloy vehicles in Japan that have no welded seams. European railroad vehicle manufacturers are trying to capitalize on and derive economic benefits from the friction stir welding technology invented in 1991