摘要
Mg-5.6Li-3.37Al-1.68Zn-1.14Ce alloy was prepared using vacuum induction melting furnace. The microstructure and phases compostion of as-cast and as-extruded alloys were investigated by optical microscopy,energy dispersive X-ray spectroscopy,scanning electron mocroscopy and X-ray diffraction. The mechanical properties of these alloys were measured with tensile tester. The results indicate that the as-cast alloy is composed of α(Mg) phase and rod-like Al2Ce compound. Al2Ce has the refining effect on the microstructure of alloy. During the extrusion at 523 K,dynamic recrystallization happens in the alloy. The dynamic recrystallization refines the grain size of alloy obviously. The phases are refined clearly after extrusion deformation,and the strength and ductility of the alloy are increased accordingly.
Mg-5.6Li-3.37Al-1.68Zn-1.14Ce alloy was prepared using vacuum induction melting furnace. The microstructure and phases compostion of as-cast and as-extruded alloys were investigated by optical microscopy, energy dispersive X-ray spectroscopy, scanning electron mocroscopy and X-ray diffraction. The mechanical properties of these alloys were measured with tensile tester. The results indicate that the as-cast alloy is composed of a(Mg) phase and rod-like Al2Ce compound. Al2Ce has the refining effect on the microstructure of alloy. During the extrusion at 523 K, dynamic recrystallization happens in the alloy. The dynamic recrystallization refines the grain size of alloy obviously. The phases are refined clearly after extrusion deformation, and the strength and ductility of the alloy are increased accordingly.
出处
《中国有色金属学会会刊:英文版》
CSCD
2007年第A01期444-447,共4页
Transactions of Nonferrous Metals Society of China
基金
Project(2006AA03Z511) supported by the Hi-Tech Research and Development Program of China
Project(11523018) supported by Heilongjian Province Education Commission Science & Technology Research Program of China
Project(002100260739) supported by Harbin Engineering University Fundamental Research Funding Program of China
关键词
镁
锂
合金
微观结构
成型技术
Mg-Li alloy
microstructure
extrusion deformation