共搜索到9875条信息,每页显示10条信息,共988页。用时:0小时0分0秒875毫秒
J. Cent. South Univ. Technol. (2011) 18: 704-710 DOI: 10.1007/s11771-011-0751-1 Development of twin wheel creep-feed grinding machine using continuous dressing for machining of aircraft rotary wing... 2011 Abstract: The purpose of this study is to develop a twin wheel creep-feed grinding machine using continuous dressing to machine precise axisymmetric turbine blades that have been difficult......
Al-Mg合金中层错和孪晶形变能的第一性原理研究董明慧1,2,韩培德1,张彩丽2,杨艳青2,张莉莉2,李洪飞2(1.山西省太原市太原理工大学材料科学与工程学院2.山西省太原市太原理工大学新材料界面科学与工程教育部重点实验室)摘 要:通过基于密度泛函理论(DFT)的第一性原理计算了纯金属Al和Al Mg合金在(111)[112]滑移系的层错能和孪晶形变能,分析了Mg含量,占位对层错能和孪晶形变能的影响.计算选用了局域密度近似(LDA)和广义梯度近似(GGA PW91)2种近似方法,发现GGA PW91所获得的层错......
of twin boundaries in pre-strained Mg-Al-Zn alloys through a combination of applied compression and tension, in-situ electron-backscattering diffraction observations, and high-angle annular dark-field... twin boundaries.关键词:......
Numerical analysis of heat transfer intensity from twin slot vertical jet impingement on strip surface after hot rollingSHI Jian-hui(石建辉), YUAN Guo(袁国), JIANG Lian-yun(江连运), ZHAO Kun(赵昆), WANG Guo-dong(王国栋) (State Key Laboratory of Rolling and Automation (Northeastern University), Shenyang 110819, China)Abstract:The flow field and heat transfer of the strip surface due to the twin slot vertical......
......
; 文献标志码:A 文章编号:1672-7207(2015)06-2074-07 Robust weighted twin support vector machine HUA Xiaopeng1, 2, DING... 221116, China; 3. Key Laboratory of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Science, Beijing 100190, China) Abstract: Weighted twin support vector......
of twin screw extruder, the process of sodium hydroxide digestion of high-viscosity wolframite by reactive extrusion was investigated. The effects of leaching time, temperature, screw rotating speed... rotating speed 180 r/min and reaction time 2.5 h, the content of WO3 in the residue and the WO3 extraction are 2.54% and 99.13%, respectively. Key words: reactive extrusion method; twin screw extruder......
......
copper[J]. Acta Materialia, 2005, 53(7): 2169-2179. [2] WANG Yan-bo, SUI Man-ling. Atomic-scale in situ observation of lattice dislocations passing through twin boundaries[J]. Applied Physics Letters, 2009... on the rotation axis, the grain boundary along [110] and [111] rotation axes has lower energy for those high angle grain boundaries, especially the Σ3(112) twin boundary. The work of separation indicates the high......