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and the crystal slip system was randomly provided for each crystal. The grain boundary sliding, which was characteristic at high temperature, was also taken into account. It was shown that the inhomogeneous deformation develops over the polycrystal and that the strain concentration appears around the triple point of crystal grain boundary. Key words:crystal plasticity; finite element method; grain boundary......
Effect of Effective Grain Size and Grain Boundary of Large Misorientation on Upper Shelf Energy in Pipeline Steels张小立1,JIANG Zhiqiang2,LI Shixian3,FAN Jiwei11. School of Materials and Chemical... that the effective grain size, the frequency distribution of grain boundary misorientation and the ratio ofhigh angle grain boundary to small angle grain boundary are important parameters. The finer......
Grain boundary segregation and its influences on ionic conduction properties of scandia doped zirconia electrolytesQiannan Xue1,Xiaowei Huang1,2,Jianxing Zhang1,He Zhang1,2,Zongyu Feng1,21. National... performed to characterize the ceramic samples. The effects of grain size and grain boundary element segregation on the electrical conductivity were focused. Electrochemical impedance spectroscopy......
Grain boundary segregation and its influences on ionic conduction properties of scandia doped zirconia electrolytesQiannan Xue1,Xiaowei Huang1,2,Jianxing Zhang1,He Zhang1,2,Zongyu Feng1,21. National... performed to characterize the ceramic samples. The effects of grain size and grain boundary element segregation on the electrical conductivity were focused. Electrochemical impedance spectroscopy......
-treatment on grain boundary distribution character of cupronickel B10 alloy RU Xiang-kun1, LIU Ting-guang1, XIA Shuang1, ZHOU Bang-xin1, MA Ai-li2, ZHENG Yu-gui2 (1. Institute of Materials, Shanghai... of cold rolling deformation and annealing on the grain boundary character distribution (GBCD) during grain boundary engineering (GBE) treatment were investigated by electron backscatter diffraction (EBSD......
J. Cent. South Univ. (2018) 25: 616-631 DOI: https://doi.org/10.1007/s11771-018-3765-0 An adaptive backstepping sliding mode method for flight attitude of quadrotor UAVs Jiang Xue-ying(姜雪莹)1, Su... and 6-DOF (degrees of freedom) under-actuated problems for the attitude and position of quadrotor UAVs, an adaptive backstepping sliding mode method for flight attitude of quadrotor UAVs is proposed......
with the de-crease of grain size for small grain sizes is all due tograin boundary sliding.For large grain sizes,a dis-location climb mechanism is dominant in creepdeformation for the first relation,while aHall-Perch grain boundary strengthening effect isbelieved to play an important role by dislocationglide mechanism for the second relation.关键词:......
Microstructure and grain boundary morphology evolution of a novel Co-9Al-9W-2Ta-0.02B alloy doped with yttriumJian-Qiang Ma,Fei Zhong,Shu-Suo Li,Jiang-Bo ShaSchool of Materials Science and Engineering, Beihang University摘 要:The microstructures and grain boundary morphologies of a novel Co-9 Al-9 W-2 Ta-0.02 B alloy doped with yttrium(Y......
. The diffusion activation energies of interstitial helium atom at these two Pd grain boundaries were also evaluated. Key words: helium atoms; diffusion; grain boundary; palladium; molecular dynamics 1... of grain boundary structure on binding of He in Fe [J]. J Nucl Mater, 2004, 329-333: 1199-1203. [2] Barnes r s. Embrittlement of stainless steels and Ni-based alloys at high temperature induced......
Effect of Transverse Grain Boundary on Microstructure,Texture and Mechanical Properties of Drawn Copper WiresJian Chen,Xiaoguang Ma,Wen Yan,Feng Xia,Xinhui FanSchool of Mat Science and Chemical... boundaries have been characterized and their mechanical properties have been analyzed.The results show that the texture evolution is accelerated by transverse grain boundary and the saturation value 60......
