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EFFECT OF PREDEFORMATION MANNER ON SEMI-SOLID STRUCTURE OF AZ61 MAGNESIUM ALLOY IN SIMA PROCESS G.P.Chen1,F.Y.Zhang1,T.R.Zhou1,H.Yan1 (1.School of Mechanical and Electrical Engineering, Nanchang... and isothermal heat-treat parameter on the non-dendrite structure of AZ61 magnesium alloy in SIMA process was studied. Under coequal heat-treat condition, the impact of the hot upsetting predeformation on semi......
of the surface film and enhances the protective capability of the films. Key words: magnesium alloy; SO2; melt protection; surface film 1 Introduction Magnesium and its alloys are being widely used... containing SO2 and air protects molten magnesium alloy by reacting with the melt to form a coherent protective film with a network structure. The protective film is first composed of MgO......
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process, the CFF of 20 ppi is suitable for filtrating the melt. Fig.4 Effects of gas flow rate (a), spraying time (b) and spraying temperature (c) on mechanical properties of AZ91 magnesium alloy Fig.5... effective in purification of aluminum alloy melt. Recently, it has been claimed that gas purging of magnesium alloys can remove a lot of inclusions from the melt. Since magnesium is a very light metal......
Microstructure and properties of AZ31 magnesium alloy with rapid solidification ZHAO Hong-liang(赵红亮), GUAN Shao-kang(关绍康),ZHENG Fei-yan(郑飞燕), LI Qing-kui(李庆奎), WANG Li-guo(王利国) (College of Materials Engineering, Zhengzhou University, Zhengzhou 450002, China) Abstract: Rapidly solidified (RS) AZ31 magnesium alloy ribbons were made using melt spinning technique. The results show that its......
in magnesium alloy melt, and the influences of three factors, namely, Ar flow rate, degassing time and temperature of magnesium alloy melt on purging effects were also studied. The optimal parameters were... mechanism of magnesium alloy melt was analyzed according to the thermodynamic and dynamic theory. Thermodynamic equations of volume of Ar gas entering into magnesium alloy melt were established......
Melting behavior of magnesium alloy chips in thixomolding process CUI Xiao-peng(崔晓鹏)1, LIU Hai-feng(刘海峰)2, LIU Yong-bing(刘勇兵)3 1. Institute of Materials Science and Engineering, Changchun... by Japan Steel Works. The microstructure from the AZ91D magnesium alloy chips to the thixomolded products was investigated. Melting behavior of the chips in thixomolding process was analyzed. The evolution......
by KUTSUKAKE et al[16]. 5 Conclusions 1) Impurity content of ZK60 magnesium alloy is decreased by means of increasing holding time of alloy melt properly during semi-continuous casting. 2... Hong-tao, DING Wen-jiang, ZHU Yan-ping. Study on mechanism of iron reduction in magnesium alloy melt [J]. Journal of Materials Science, 2005, 40: 6175-6180. [13] WAN Peng, FAN Xiao-ming, HU Shou-yu......
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Reheating microstructure of refined AZ91D magnesium alloy in semi-solid state JIANG Ju-fu(姜巨福), LUO Shou-jing(罗守靖) (School of Materials Science and Engineering, Harbin Institute of Technology.... With increasing equivalent strain, the average grain size decreases. This demonstrates that reheating material extruded by ECAE technology is a good method to prepare AZ91D magnesium alloy semi-solid billets. Key......
