Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy

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	Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy
其他题名	Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy
	Ji Shude 1; Zou Aili 1; Yue Yumei 1; Luan Guohong 2; Jin Yanye 1; Li Fu 1
	2012
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	25 期号:5 页码:365-373
摘要	The rotational tool is put forward, which is composed of the one-spiral-flute shoulder and the rotational pin with screw. Using the turbulent model of the FLUENT software, material plastic flow behavior during the process of friction stir welding of Ti6Al4V alloy is researched by the numerical simulation method and then the effect of rotational tool geometry on material flow during the welding process is attained. The results show that the flow direction of the material near the rotational tool is mainly the same as the rotational direction of the tool while the material near tool flows more violently than the other regions. For the tapered rotational pin, the flow velocity of material inside the workpiece decreases with the increase of the distance away from the workpiece surface because of the change of pin diameter. For the rotational tool, the flute added to the shoulder and the screw added to the pin can greatly increase the flow velocity of material during the welding process while the peak value of the flow velocity of material appears on the flute or the screw. Moreover, the rotational tool with the one-spiral-flute shoulder is better than the tool with the concentric-circles-flute shoulder. Decreasing the width of pin screw and increasing the diameter of pin tip are both good for the increase of flow velocity.
其他摘要	The rotational tool is put forward, which is composed of the one-spiral-flute shoul-der and the rotational pin with screw. Using the turbulent model of the FLUENT software, material plastic flow behavior during the process of friction stir welding of Ti6Al4V alloy is researched by the numerical simulation method and then the effect of rotational tool geometry on material flow during the welding process is attained. The results show that the flow direction of the material near the rotational tool is mainly the same as the rotational direction of the tool while the material near tool flows more violently than the other regions. For the tapered rotational pin, the flow velocity of material inside the workpiece decreases with the increase of the distance away from the workpiece surface because of the change of pin diameter. For the rotational tool, the flute added to the shoulder and the screw added to the pin can greatly increase the flow velocity of material during the welding process while the peak value of the flow velocity of material appears on the flute or the screw. Moreover, the rotational tool with the one-spiral-flute shoulder is better than the tool with the concentric-circles-flute shoulder. Decreasing the width of pin screw and increasing the diameter of pin tip are both good for the increase of flow velocity.
关键词	TENSILE PROPERTIES GRAIN-STRUCTURE MICROSTRUCTURE TITANIUM Friction stir welding Titanium alloy Plastic flow Numerical simulation
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:4667611
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157598
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Beijing Aeronaut Mfg Technol Res Institute, Beijing 100024, Peoples R China
推荐引用方式 GB/T 7714	Ji Shude,Zou Aili,Yue Yumei,et al. Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2012,25(5):365-373.
APA	Ji Shude,Zou Aili,Yue Yumei,Luan Guohong,Jin Yanye,&Li Fu.(2012).Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,25(5),365-373.
MLA	Ji Shude,et al."Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 25.5(2012):365-373.