典型文献
Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography
文献摘要：
The detrimental effects of carbides and porosity on the fatigue crack initiation and propagation of nickel-based single-crystal superalloys have been reported by many previous studies.However,few studies have quantitatively compared the fatigue damaging effects of carbides and pores on the fatigue crack evolution.In this study,a high-resolution X-ray computed tomography (XCT) characterization of a DD5 nickel-based single-crystal superalloy during fatigue test was performed.The evolution of carbides,pores and cracks at all stages was observed and tracked.In order to quantify the 3D microstructures,a new damage factor that correlates the morphology of fracture surface with crack evolution behaviors was proposed.It was found that porosity was more detrimental than carbides in crack initiation and propagation during fatigue tests.Furthermore,pore spacing has been found to be the most significant factor among all controlling pore characteristics in the crack initia-tion stage and sphericity is the most critical pore characteristic in the crack propagation stage.Therefore,by statistically analyzing the evolution of carbides and pores during fatigue tests in this study,the underlying fatigue cracking mechanism of nickel-based superalloys is revealed,
文献关键词：
中图分类号：
作者姓名：
Keli Liu;Junsheng Wang;Bing Wang;Pengcheng Mao;Yanhong Yang;Yizhou Zhou
作者机构：
School of Materials Science & Engineering,Beijing Institute of Technology,Beijing 100081,China;Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing 100081,China;Center for Micro and Nano Technologies,Beijing Institute of Technology,Beijing 100081,China;Superalloys Division,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
文献出处：
引用格式：
[1]Keli Liu;Junsheng Wang;Bing Wang;Pengcheng Mao;Yanhong Yang;Yizhou Zhou-.Quantifying the Influences of Carbides and Porosities on the Fatigue Crack Evolution of a Ni-Based Single-Crystal Superalloy using X-ray Tomography)[J].金属学报（英文版）,2022(01):133-145
A类：
Carbides,Porosities
B类：
Quantifying,Influences,Fatigue,Crack,Evolution,Based,Single,Crystal,Superalloy,using,ray,Tomography,detrimental,effects,carbides,porosity,fatigue,initiation,propagation,nickel,single,crystal,superalloys,have,been,reported,by,many,previous,studies,However,few,quantitatively,compared,damaging,pores,evolution,this,study,high,resolution,computed,tomography,XCT,characterization,DD5,during,was,performed,cracks,stages,observed,tracked,order,quantify,microstructures,new,damage,that,correlates,morphology,fracture,surface,behaviors,proposed,It,found,than,tests,Furthermore,spacing,has,most,significant,among,controlling,characteristics,sphericity,critical,Therefore,statistically,analyzing,underlying,cracking,mechanism,revealed
AB值：
0.481924
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