典型文献
In Situ DIC Study on LCF Behavior of Retired Weld Joint Subjected to Prolonged Service at Elevated Temperature
文献摘要：
By using digital image correlation(DIC),low-cycle fatigue(LCF)behavior of CrMoV weld joint taken from a retired gas turbine rotor after 15-year service was investigated at 500℃and 540℃.The most remarkable plastic strain was observed in the weld metal(WM),which was up to 6 times of the global strain at mid-life cycle.Due to the cyclic accumulation of local deformation,the stress-strain hysteresis loops relative to tensile or compressive strain concentration area in WM displayed the ratchetting shape.The local deformation accumulation of WM was attributed to the effect of the equiaxed grain zone near the WM center.The accumulated plastic strain was considered as the main fatigue failure mechanism.
文献关键词：
中图分类号：
作者姓名：
Anqi Zuo;Xia Liu;Chendong Shao;Mingzhe Fan;Ninshu Ma;Fenggui Lu
作者机构：
Shanghai Key Laboratory of Materials Laser Processing and Modification,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co.Ltd.,Shanghai 200240,China;Joining and Welding Research Institute,Osaka University,Osaka 567-0047,Japan
文献出处：
引用格式：
[1]Anqi Zuo;Xia Liu;Chendong Shao;Mingzhe Fan;Ninshu Ma;Fenggui Lu-.In Situ DIC Study on LCF Behavior of Retired Weld Joint Subjected to Prolonged Service at Elevated Temperature)[J].金属学报（英文版）,2022(08):1317-1328
A类：
Retired,CrMoV,ratchetting
B类：
In,Situ,DIC,Study,LCF,Behavior,Weld,Joint,Subjected,Prolonged,Service,Elevated,Temperature,By,using,digital,image,correlation,low,cycle,fatigue,behavior,weld,joint,taken,from,retired,gas,turbine,rotor,after,year,service,was,investigated,most,remarkable,plastic,strain,observed,metal,WM,which,up,times,global,mid,life,Due,cyclic,accumulation,local,deformation,stress,hysteresis,loops,relative,tensile,compressive,concentration,area,displayed,shape,attributed,effect,equiaxed,grain,zone,near,center,accumulated,considered,main,failure,mechanism
AB值：
0.642139
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