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Numerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy
Alternative TitleNumerical simulation of effect of rotational tool with screw on material flow behavior of friction stir welding of Ti6Al4V alloy
Ji Shude1; Zou Aili1; Yue Yumei1; Luan Guohong2; Jin Yanye1; Li Fu1
2012
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume25Issue:5Pages:365-373
AbstractThe 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.
Other AbstractThe 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.
KeywordTENSILE PROPERTIES GRAIN-STRUCTURE MICROSTRUCTURE TITANIUM Friction stir welding Titanium alloy Plastic flow Numerical simulation
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:4667611
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157598
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Beijing Aeronaut Mfg Technol Res Institute, Beijing 100024, Peoples R China
Recommended Citation
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.
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