Finite element analysis of thermal effect on large thick titanium alloy electron beam welding with different focus

doi:10.4028/www.scientific.net/AMM.152-154.665

CORC > 兰州理工大学 > 兰州理工大学

	Finite element analysis of thermal effect on large thick titanium alloy electron beam welding with different focus
	Zhang, Binggang 1; Chen, Guoqing 1; Guo, Wei 1; Shi, Mingxiao 2
	2012
会议日期	January 15, 2012 - January 16, 2012
会议地点	Melbourne, VIC, Australia
关键词	Computer simulation Electron beam welding Finite element method Mechanical engineering Morphology Thermal gradients Thermocouples Titanium alloys Cross-section morphology Finite element models Gaussian surface Heat source models Heat sources Molten pool Peak temperatures Simulated results Surface temperatures TA15 titanium alloy Temperature field Temperature gradient Thermal cycle curve Weld morphology
卷号	152-154
DOI	10.4028/www.scientific.net/AMM.152-154.665
页码	665-671
英文摘要	A composite heat source model composed of Gaussian surface heat source and rotational paraboloidal body heat source have been established to simulate the temperature field of 20mm TA15 titanium alloy. The results show that the simulated peak temperature of molten pool during surface focus welding is 3200°C, while the simulated peak temperature of molten pool during lower focus is 2700°C, and the whole surface temperature of surface focus welding is higher than that of lower focus welding, while the whole inner temperature of surface focus welding is lower than that of lower focus. The simulated temperature gradient in the direction of depth during surface focus welding is large, but the simulated temperature gradient in the direction of depth during lower focus welding is small. The simulated result was verified by the thermocouple and contrast of weld cross section morphology. The simulated thermal cycle curves are well consistent to the results tested by thermocouple, and there is a good consistency between the simulated molten pool morphology and the real weld morphology, they verify the accuracy of finite element model. © (2012) Trans Tech Publications.
会议录	Applied Mechanics and Materials
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	16609336
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116479]
专题	兰州理工大学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.State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; 2.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Zhang, Binggang,Chen, Guoqing,Guo, Wei,et al. Finite element analysis of thermal effect on large thick titanium alloy electron beam welding with different focus[C]. 见:. Melbourne, VIC, Australia. January 15, 2012 - January 16, 2012.