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 1; Huang Xiaofeng 2; Li Bao 3; Ma Ying 1
	2011
关键词	magnesium alloy thixo-forming semisolid die-casting isothermal heat treatment mechanical property
卷号	306-307
DOI	10.4028/www.scientific.net/AMR.306-307.539
页码	539-+
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 degrees 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.
会议录	EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND
语种	英语
资助项目	National Basic Research Program of China[2010CB635106][2007CB613700] ; Gansu Province Key Technology RD Program[0708GKCA029]
WOS研究方向	Materials Science
WOS记录号	WOS:000309192200111
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/37548]
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
通讯作者	Yan Fengyun
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou, Peoples R China 2.Lanzhou Univ Technol, Key Lab Nonferrous Met Alloys & Proc, Minist Educ, Lanzhou, Peoples R China 3.Inner Mongolia First Machinery Grp Corp, Baotou, Peoples R 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:.