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method in service indirect trust relationship and QoS correction strategy based on probability density, service combination algorithm based on deepness trust reason was devised. The results show...-organizational collaboration; indirect trust valuation; deepness trust reasoning; services combination 近年来,随着服务计算(Service-oriented computing)和云计算技术的出现,以Web服务为核心的新型跨组织协同技术已受广泛重视[1-3].在服务计算和云计算技术下,各组织中软件,平台以及基础设施......
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DEPOSITION OF TiBN HARD FILMS ON HOT-WORKING-STEEL DIES FOR ALUMINIUM EXTRUSION VIA A DUPLEX PROCESS K.MUller1 (1.Forschungszentrum Stranpressen, TU Berlin, 13355 Berlin, Germany) Abstract:Hot working steels have been used as die materials for hot extrusion of aluminium.Due to tribological interaction at elevated temperature between the die bearing and thesurface of extruded aluminium profiles......
Cold extrusion deformation behavior of medium carbon steel after quenching and tempering HU Cheng-liang(胡成亮)1, ZHAO Zhen(赵 震)1, YIN Guan-ren(尹冠人)1, YUAN Zhao-feng(袁兆峰)2, XU Xiang...; Abstract: By taking 40Cr as a specific object, cold extrusion deformation behavior of medium carbon steel after quenching and tempering was studied by experimental works. The influence......
体时,并不是单纯的机械振动作用效果,而是超声波和高频机械振动的共同作用. 关键词:铝合金；半固态浆料；非枝晶组织；间接超声振动；机理 中图分类号:TG146.2；TG249 文献标志码:A Mechanism of semi-solid slurry of A356 alloy prepared by indirect... and Technology, Wuhan 430074, China) Abstract: The process of semi-solid A356 alloy slurry prepared by indirect ultrasonic vibration (IUV) and its mechanism, combined with water simulation experiment......
Contrast of FEM and FVM in simulation of complex aluminum extrusion LI Da-yong(李大永), ZHOU Fei(周 飞), CHANG Qun-feng(苌群峰), PENG Ying-hong(彭颖红) School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China Received 28 July 2006; accepted 15 September 2006 Abstract: Extrusion is the key technology to manufacture aluminum profiles and involves complicate metal......
Al2Ce compound. Al2Ce has the refining effect on the microstructure of alloy. During the extrusion at 523 K, dynamic recrystallization happens in the alloy. The dynamic recrystallization refines the grain size of alloy obviously. The phases are refined clearly after extrusion deformation, and the strength and ductility of the alloy are increased accordingly. Key words: Mg-Li alloy; microstructure......
Similar extrusion and mapping optimization of die cavity modeling for special-shaped products QI Hong-yuan(齐红元), WANG Shuang-xin(王爽心), ZHU Heng-jun(朱衡君) School of Mechanical and Electric Control... model with the latest NC technology, NC Program of die cavity and its CAM can be realized. Taking the similar extrusion of square-shaped products with arc radius as instance, both metal plastic......
Microstructure evolution of processed Mg-Al-Zn alloy by equal channel angular extrusion in semi-solid isothermal treatment JIANG Ju-fu(姜巨福), LUO Shou-jing(罗守靖) School of Materials Science... extrusion(ECAE) in semi-solid isothermal treatment was investigated. The results show that with increasing semi-solid isothermal treatment temperature, the α phase solid grain size of processed Mg-Al......
Extrusion Deformation Texture of SiC_W/Al Composites焦成革,姚忠凯,韩雅芳摘 要:<正> The interface orientation relationships betweenSiC whiskers and matrix have been studied byX-ray diffraction and crystallite orientation distri-bution functions (CODFs) analysis.The distribu-tion of SiC whiskers in Al matrix of the as-castSiCw/Al composite was nearly unperfect......
