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Warm hydroforming of magnesium alloy tube with large expansion ratio LIU Gang(刘 钢), TANG Ze-jun(汤泽军), HE Zhu-bin(何祝斌), YUAN Shi-jian(苑世剑) School of Materials Science and Engineering, Harbin... hydroforming; magnesium alloy; tube; expansion ratio; hydraulic bulge test; wrinkle 1 Introduction As the lightest metal material in common use, more and more magnesium alloy sheets and tubes have......
of coils.The main properties of the contributing materials in this experiment are included in Table 2. Aluminum alloy (A3003) tubes were prepared to carry out the tube compression tests. The constitutive... on FEM [J]. Chinese Journal of Mechanical Engineering, 2006, 42(7): 231-234. (in Chinese) [17] YU Hai-ping, LI Chun-feng. Finite element analysis of free expansion of aluminum alloy tube under magnetic......
. The material used in experiment is LF2M aluminum alloy tube, whose parameters are as follows: stiffness coefficient is 237 MPa, hardening index 0.263 4 and elastic modulus 55.67 GPa. Para- meters... Effect of frictions on cross section quality of thin-walled tube NC bending YANG He(杨 合), GU Rui-jie(谷瑞杰), ZHAN Mei(詹 梅), LI Heng(李 恒) College of Materials Science and Engineering, Northwest......
; Abstract: The mechanical properties of AZ31B magnesium alloy tube were tested by ring hoop tension test at different temperatures. The formability for tube hydroforming... the maximum value of 30% at 170 ℃, then decreases quickly at higher temperature. Key words: magnesium alloy tube; elongation; hydroformability; free-expansion test ......
to pitting by removing noble Mn from solid solution. Such an effect was not observed for the low-Mn alloy. Key words: cold deformation; Mn precipitation; aluminium tube alloy 1 Introduction... that the bent region of the high Mn tube is more susceptible to pitting corrosion (Fig. 1), has a lower breakdown potential than the straight region of the same alloy (Fig. 2) and has the highest......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
Article ID: 1003-6326(2005)05-1040-05 Finite element analysis of free expansion of aluminum alloy tube under magnetic pressure YU Hai-ping(于海平), LI Chun-feng(李春峰) (School of Materials Science... modeling of electromagnetic forming for aluminum alloy tube expansion was performed by means of them (discharge energy 0.75kJ). A realistic distribution of magnetic pressure was calculated......
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2006 Abstract: Experiment on seamless tubes of aluminum alloy A6063 with initial thickness deviation of 0–20% was conducted through a free hydraulic bulging with tube ends free. The influence of initial... decrease in maximum radial expansion, and a rapid increase in thickness deviation and the center eccentricity of the inner and outer profiles. Key words: tube; A6063; aluminum alloy; free hydraulic......
of clamp die 116mm, the length of pressure die 260mm, the length of wiper die 140mm, the diameter of mandrel 35.75mm and its length 150mm. The material used in experiment is LF2M aluminum alloy tube... commonly in industry, and 5% for high-pressure tube, meanwhile wall thinning is decreased as small as possible. In order to gain qualified low-pressure and middle-pressure LF2M aluminum alloy bending......
