首页 | 官方网站   微博 | 高级检索  
     

影响搅拌摩擦焊金属塑性流动的因素
引用本文:于勇征,罗宇,栾国红.影响搅拌摩擦焊金属塑性流动的因素[J].焊接学报,2004,25(5):117-120.
作者姓名:于勇征  罗宇  栾国红
作者单位:1. 大连铁道学院,材料科学与工程系,辽宁,大连,116028
2. 中国搅拌摩擦焊中心,北京,100024
摘    要:针对LF6/LD10、12/T2研究了搅拌摩擦焊(FSW)的金属塑性流动。通过工艺试验,分析了影响FSW金属塑性流动的因素。研究结果表明,被焊材料反复动态再结晶是其持续塑跬流动的前提条件。影响金属塑性流动的因素主要有两个——材料的变形温度和变形速率。搅拌工具使材料保持高应变速率,并对材料快速加热,致使层错能很高的铝发生动态再结晶,促使其稳定流动。保持一定的焊接温度有利于金属动态软化,促进塑性流动,实现焊接。

关 键 词:搅拌摩擦焊  金属塑性流动  动态再结晶
文章编号:0253-360X(2004)05-117-04
收稿时间:2003/12/5 0:00:00

Factors affecting on metal plastic flow during friction stir welding
YU Yong-zheng,LUO Yu and LUAN Guo-hong.Factors affecting on metal plastic flow during friction stir welding[J].Transactions of The China Welding Institution,2004,25(5):117-120.
Authors:YU Yong-zheng  LUO Yu and LUAN Guo-hong
Affiliation:YU Yong-zheng~1,LUO Yun,LUAN Guo-hong~2
Abstract:The material flow and micro-structural evolution in the friction stir welding of L2-Al to itself, L2-Al to T2-Cu, T2-Cu to itself and LF6-Al alloy to LDI0-Al alloy were studied under different welding conditions. The experinentel results show that the repeated dynamic recrystal is the reason for metal keeping flowing. Two main factors affecting metal plases flowing are deformation speed and welding temperature . The stir tool makes the material with high strain, and heat it quickly, which lead to aluminum recrystal, and flowing steady. A properly elevated welding temperature is good for metal softening, and can promote flowing,then achieve welding.
Keywords:friction stir welding  metal plastic flowing  dynamic rccrystal
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《焊接学报》浏览原始摘要信息
点击此处可从《焊接学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号