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Improving friction stir weldability of Al/Mg alloys via ultrasonically diminishing pin adhesion
Meng Xiangchen1; Jin Yanye1; Ji Shude1; Yan Dejun2
2018
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume34Issue:10Pages:1817-1822
AbstractFormation of intermetallic compounds (IMCs) during friction stir welding (FSW) of aluminum/magnesium (Al/Mg) alloys easily results in the pin adhesion and then deteriorates joint formation. The severe pin adhesion transformed the tapered-and-screwed pin into a tapered pin at a low welding speed of 30 mm/min. The pin adhesion problem was solved with the help of ultrasonic. The weldability of Al/Mg alloys was significantly improved due to the good material flow induced by mechanical vibration and the fragments of the IMCs on the surface of a rotating pin caused by acoustic streaming, respectively. A sound joint with ultrasonic contained long Al/Mg interface joining length and complex mixture of Al/Mg alloys in the stir zone, thereby achieving perfect metallurgical bonding and mechanical interlocking. The ultrasonic could broaden process window and then improve tensile properties. The tensile strength of the Al/Mg joint with ultrasonic reached 115 MPa. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Other AbstractFormation of intermetallic compounds (IMCs) during friction stir welding (FSW) of aluminum/magnesium (Al/Mg) alloys easily results in the pin adhesion and then deteriorates joint formation. The severe pin adhesion transformed the tapered-and-screwed pin into a tapered pin at a low welding speed of 30 mm/min. The pin adhesion problem was solved with the help of ultrasonic. The weldability of Al/Mg alloys was significantly improved due to the good material flow induced by mechanical vibration and the fragments of the IMCs on the surface of a rotating pin caused by acoustic streaming, respectively. A sound joint with ultrasonic contained long Al/Mg interface joining length and complex mixture of Al/Mg alloys in the stir zone, thereby achieving perfect metallurgical bonding and mechanical interlocking. The ultrasonic could broaden process window and then improve tensile properties. The tensile strength of the Al/Mg joint with ultrasonic reached 115 MPa.
KeywordMECHANICAL-PROPERTIES ALUMINUM-ALLOY MAGNESIUM ALLOY INTERMETALLIC COMPOUNDS MG ALLOYS AL-ALLOY SHOULDER MICROSTRUCTURE EVOLUTION JOINTS Friction stir welding Ultrasonic Aluminum/magnesium alloys Pin adhesion Intermetallic compounds Stationary shoulder
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Program for Liaoning ExcellentTalents in University] ; [China PostdoctoralScience Foundation] ; [Guangdong Provincial Key Laboratory of Advanced Welding Technology]
CSCD IDCSCD:6335112
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/146769
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.中国科学院广州地球化学研究所
Recommended Citation
GB/T 7714
Meng Xiangchen,Jin Yanye,Ji Shude,et al. Improving friction stir weldability of Al/Mg alloys via ultrasonically diminishing pin adhesion[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(10):1817-1822.
APA Meng Xiangchen,Jin Yanye,Ji Shude,&Yan Dejun.(2018).Improving friction stir weldability of Al/Mg alloys via ultrasonically diminishing pin adhesion.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(10),1817-1822.
MLA Meng Xiangchen,et al."Improving friction stir weldability of Al/Mg alloys via ultrasonically diminishing pin adhesion".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.10(2018):1817-1822.
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