摘要
搅拌摩擦焊(FSW)接头的抗疲劳断裂特性是评定其构件使用性能的重要指标之一。本文对搅拌摩擦焊的接头疲劳行为研究现状做了比较详尽的总结,涉及S-N曲线、裂纹扩展速度da/dN和门槛值?Kth,腐蚀环境下的裂纹扩展速度和门槛值、显微组织及影响因素,并提出了今后需要解决的问题。
The fatigue fracture resistance of FSW joints is one of the very important properties to assess the capability of FSW structure in practical application. The recent advances on the fatigue properties of FSW joints were summarized in details, which mainly included the test results of S-N curves, the relationship between fatigue crack growth rate da/dN and AK, the threshold value of stress intensity factor AKth and the fatigue crack growth behavior in corrosion environment. The influences of various factors on the fatigue behavior of FSW joints were analyzed and the existed problems for the fatigue assessment of FSW were proposed and discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第7期1172-1176,共5页
Rare Metal Materials and Engineering
关键词
搅拌摩擦焊接头
疲劳行为
研究现状
friction stir welding joints
fatigue behavior
research progress
作者简介
周才智,男,1980年生,硕士生,天津大学材料学院材料加工及自动化系,天津 300072,电话：022-27409738
