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">As a successively and locally plastic deformation process, ball spinning is applied to manufacturing thin-walled Nickel-Titanium shape memory alloy (NiTi SMA) tube at high temperature. NiTi SMA tube blank... of thin-walled NiTi SMA tube in order to analyze the deformation behavior of ball spinning of NiTi SMA tube. Stress fields, strain fields as well as velocity fields is obtained by means of rigid......
] BRUSH D O, ALMROTH B O. Buckling of bars, plates, and shells[M]. New York: McGraw-Hill, 1975: 463-519. [16] DU Bing, ZHAO Chang-cai, DONG Guo-jiang, YA Yuan-yuan. Study on thin-walled tube forming...): 236-249. [5] ZHOU Jing, WANG Bao-yu, LIN Jian-guo, FU Le, MA Wen-yu. Forming defects in aluminum alloy hot stamping of side-door impact beam[J]. Transactions of Nonferrous Metals Society of China......
expansion of aluminum alloy tube under magnetic pressure [J]. Trans Nonferrous Met Soc China, 2005, 15(5): 1040-1044. [5] REID S R., DREW S L K, CARNEY J F III. Energy absorbing capacities of braced metal..., load distribution and discussion on the influence of process parameters. Fig.1 Circular copper tube and aluminum tube (a), experimental equipment (b), aluminum without collapse (c) and aluminum......
Evaluation of forming limit in viscous pressure forming of automotive aluminum alloy 6k21-T4 sheet WANG Zhong-jin(王忠金)1, LI Yi(李 毅)1, LIU Jian-guang(刘建光)1, ZHANG Yi-he(张义和)2 1. School...; Abstract: A ductile fracture criterion is introduced into numerical simulation to predict viscous pressure forming limit of the automotive body aluminum alloy 6k21-T4. The material constant......
. This method not only conceives short processes, but also ensures the manufacture of the composite tube with excellent integration. Aluminum alloy A356 and magnesium alloy AZ91 were selected because...-extruded double layer tube is shown in Fig.6. As shown in Fig.6, after punch running of about 0.06s, the billets of aluminum alloy A356 and magnesium alloy AZ91 begin to contact with each other......
; 文献标志码:A Ductile fracture behavior of 6xxx aluminum alloy thin-walled components of automobile YE Tuo1, WANG Guan1, YAO Zai-qi2, LI Luo-xing1 (1... Co.Ltd., Hangzhou 311228, China) Abstract: The true stress-strain curve of automobile 6xxx aluminum alloy thin-walled components was obtained by tensile tests. Johnson-Cook constitution parameters......
such as reduction of the wall-thickness and instability wrinkling were analyzed. Thereby, the complex curved surface super-alloy GH3044 thin-walled tube with varying diameter ratio of 1.35(the ratio...Viscous Inner and Outer Pressure Forming Method of Thin-walled Tube and Its Application高铁军1,LIU Yang1,WANG Zhongjin21. Faculty of Aerospace Engineering, Shenyang Aerospace University2. School......
for mold filling in vacuum suction casting. Key words: A356 aluminum alloy; vacuum suction casting; water simulation; surface turbulence; thin-walled casting; oxide film 1 Introduction Vacuum suction casting... [9]. Recently, complex thin-walled castings of aluminum/magnesium alloys have been widely used in aerospace and automotive industries for their excellent mechanical properties. Thus, vacuum suction......
键词:白铜合金；管坯；连铸；旋转电磁场 中图分类号:TG 249.7 文献标识码:A Thin-walled tube billets of cupronickel alloy by electromagnetic continuous casting LI Xin-tao1, 2, GUO Zhao-xiang1, ZHAO..., the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase......
. The simulation result agrees with the experimental result, and the FLSD is able to predict the forming limit of tube hydroforming with remarkable accuracy. Key words: 3A21 aluminum alloy; hydroforming; fracture... corner and straight side. 4 Experiments on tube hydroforming Fig.10 shows the sample formed into a square cross- section with a 3A21 aluminum alloy extruded tube. Fig.10 Sample of hydroformed......
