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Trans. Nonferrous Met. Soc. China 22(2012) s793-s800 Rotary ultrasonic-assisted milling of brittle materials KUO Kei-lin1, TSAO Chung-chen2 1. Department of Vehicle Engineering, National Taipei... ultrasonic machining (RUM’s) effectiveness in removing brittle materials to extend the applications of this independent, innovative manufacturing method (self-driving rotary ultrasonic machining......
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Fractal Dimensions of Hydrogen Induced Brittle Fracture of Titanium AluminideYue ZHANG Yanbin WANG Lijie QIAO Wuyang CHU Chimei HSIAO Dept.of Materials Physics,University of Science and Technology,Beijing,Beijing,100083,China摘 要:<正> The relationship between the stress intensity factor K1* required for brittle crack initiation and propa-gation......
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J. Cent. South Univ. (2016) 23: 3256-3261 DOI: 10.1007/s11771-016-3391-7 Coupled effects of stress damage and drilling fluid on strength of hard brittle shale WANG Wei(汪伟), DENG Jin-gen(邓金根), YU Bao... University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: During well drilling process, original stress state of hard brittle shale will be changed due to stress redistribution......
. The fatigue fracture mechanisms were analyzed by SEM. The fatigue fracture surface consists of quasi-cleavage patterns or cleavage step and a brittle fracture occurs. Numerous secondary cracks are observed; some fatigue striations exist in butt joint and its size is about 5 μm. Key words: AZ31B magnesium alloy; fatigue fracture; crack propagation; brittle fracture 1 Introduction Magnesium alloys have......
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Effect of weld microstructure on brittle fracture initiation in the thermally-aged boiling water reactor pressure vessel head weld metalNoora Hyt?nen1,Zai-qing Que1,Pentti Arffman1,Jari Lydman1,Pekka...="ChDivSummary" name="ChDivSummary">Effects of the weld microstructure and inclusions on brittle fracture initiation are investigated in a thermally aged ferritic high-nickel weld of a reactor pressure......