Effects of CaF2 coating on the microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints

doi:10.1007/s11661-012-1204-7

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 机器人与3D打印技术创新中心

	Effects of CaF2 coating on the microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints; Effects of CaF2 coating on the microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints
	Shen, Jun 1; Wang, Linzhi1,2 ; Peng, Dong 1; Wang, Dan 1
	2012 ; 2012
DOI	10.1007/s11661-012-1204-7 ; 10.1007/s11661-012-1204-7
页码	4397-4405 ; 4397-4405
通讯作者	Shen, J. (shenjun2626@163.com) ; Shen, J. (shenjun2626@163.com)
英文摘要	The effects of CaF2 coating on the macromorphologies of the welded seams were studied by morphological analysis. Microstructures and mechanical properties of butt joints welded with different amounts of CaF 2 coatings were investigated using optical microscopy and tensile tests. The welding defects formed in the welded seams and the fracture surfaces were analyzed by scanning electron microscopy. An increase in the amount of CaF2 coating deteriorated the appearances of the welded seams but it improved the weld penetration depth and the depth/ width (D/W) ratio of the tungsten inert gas (TIG) welded joints. The α-Mg grains and Mg 17(Al,Zn)12 intermetallic compound (IMC) were coarser in the case of a higher amount of CaF2 coating. The increase in the amount of CaF2 coating reduced the porosities and total length of solidification cracks in the fusion zone (FZ). The ultimate tensile strength (UTS) value and elongation increased at first and then decreased sharply. © 2012 The Minerals, Metals & Materials Society and ASM International.; The effects of CaF2 coating on the macromorphologies of the welded seams were studied by morphological analysis. Microstructures and mechanical properties of butt joints welded with different amounts of CaF 2 coatings were investigated using optical microscopy and tensile tests. The welding defects formed in the welded seams and the fracture surfaces were analyzed by scanning electron microscopy. An increase in the amount of CaF2 coating deteriorated the appearances of the welded seams but it improved the weld penetration depth and the depth/ width (D/W) ratio of the tungsten inert gas (TIG) welded joints. The α-Mg grains and Mg 17(Al,Zn)12 intermetallic compound (IMC) were coarser in the case of a higher amount of CaF2 coating. The increase in the amount of CaF2 coating reduced the porosities and total length of solidification cracks in the fusion zone (FZ). The ultimate tensile strength (UTS) value and elongation increased at first and then decreased sharply. © 2012 The Minerals, Metals & Materials Society and ASM International.
语种	英语 ; 英语
ISSN号	10735623 ; 10735623
内容类型	会议论文
源URL	[http://119.78.100.138/handle/2HOD01W0/4711]
专题	机器人与3D打印技术创新中心
作者单位	1.College of Material Science and Engineering, Chongqing University, Chongqing 400044, China; 2.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 404100, China
推荐引用方式 GB/T 7714	Shen, Jun,Wang, Linzhi,Peng, Dong,et al. Effects of CaF2 coating on the microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints, Effects of CaF2 coating on the microstructures and mechanical properties of tungsten inert gas welded AZ31 magnesium alloy joints[C]. 见:.