Semisolid die-casting process of Mg-20Al-0.8Zn magnesium alloy

doi:10.4028/www.scientific.net/AMR.306-307.539

	Semisolid die-casting process of Mg-20Al-0.8Zn magnesium alloy
	Yan, Fengyun 2; Huang, Xiaofeng 1; Li, Bao 3; Ma, Ying 2
	2011
会议日期	May 13, 2011 - May 16, 2011
会议地点	Jinan, China
关键词	Alloys Aluminum Cerium alloys Magnesium Magnesium alloys Magnesium castings Mechanical properties Microstructure Tensile strength Zinc Elongation rates Experimental equipments Fracture mechanisms Holding time Injection pressures Injection speed Intercrystalline Isothermal heat treatments Isothermal heat-treatment Isothermal temperature Microstructure evolutions Non-dendrite Semisolid die-casting Spherical grains Technological parameters Thixo-forming
卷号	306-307
DOI	10.4028/www.scientific.net/AMR.306-307.539
页码	539-543
英文摘要	Based on microstructure evolution of Mg-20Al-0.8Zn magnesium alloys realized by semisolid isothermal heat-treatment (SSIT), we obtained the non-dendrite or spherical grains microstructure under the suitable technological parameters that isothermal temperature is 495°C and holding time is 120 min. With the help of special experimental equipment, the semisolid die-casting process has been studied and the specimens have been analyzed. The effects of different parameters as injection speed and pressure on tensile strength, elongation rate, hardness, etc have been investigated. The results indicate that tensile strength was improved along with increasing injection speed and pressure. However, excessive speed will involve gas, which formed defects and reduced the mechanical properties. When the injection pressure is 40MPa and injection speed is 4m/s, the tensile strength and elongation rate can reach maximal 220MPa and 5.63% respectively. Its fracture mechanism was intercrystalline cracking. © (2011) Trans Tech Publications, Switzerland.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116337]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Key Laboratory of Non-ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou, China; 2.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, China; 3.Inner Mongolia First Machinery Group Corporation, Baotou, China
推荐引用方式 GB/T 7714	Yan, Fengyun,Huang, Xiaofeng,Li, Bao,et al. Semisolid die-casting process of Mg-20Al-0.8Zn magnesium alloy[C]. 见:. Jinan, China. May 13, 2011 - May 16, 2011.