Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper

This paper described the tensile strength of friction welded joint between Al-Mg alloy (JIS A5052) and pure copper (OFC). In particular, the joining phenomena during the friction process and the effects of friction welding condition such as friction pressure, friction time and forge pressure on the...

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Autores principales:	Masaaki KIMURA, Yuusuke INUI, Masahiro KUSAKA, Koichi KAIZU
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2018
Materias:	friction welding aluminum alloy pure copper friction welding condition tensile strength mechanically mixed layer fractured point Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/45c3c713f6504857819c45467c2401f5
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spelling	oai:doaj.org-article:45c3c713f6504857819c45467c2401f52021-11-26T07:16:02ZEffects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper2187-974510.1299/mej.17-00398https://doaj.org/article/45c3c713f6504857819c45467c2401f52018-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/2/5_17-00398/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper described the tensile strength of friction welded joint between Al-Mg alloy (JIS A5052) and pure copper (OFC). In particular, the joining phenomena during the friction process and the effects of friction welding condition such as friction pressure, friction time and forge pressure on the joint strength have been investigated, and the metallurgical characteristics of joints have been also observed and analyzed. The adjacent region of the weld interface at the A5052 side was upset during the friction process, although that of the OFC side was hardly upset. When the joint was made with a friction pressure of 30 MPa, all joints fractured at the weld interface because those joints had the not-joined region at this portion. To reduce the not-joined region, the joint was made with increasing forge pressure. All joints did not have a joint efficiency of 100% (same tensile strength as the A5052 base metal) and the fracture on the A5052 base metal without crack at the weld interface, although the joint efficiency increased with increasing forge pressure. It was showed that the joint had the mechanically mixed layer as the lamellar structures of A5052 and OFC on the adjacent region of the weld interface at the A5052 side, and that layer influenced to the fractured point of the joint. The mechanically mixed layer decreased with decreasing friction time and with decreasing friction pressure after the initial peak. Then, the joint, which had the same tensile strength as the A5052 base metal, the fracture on the A5052 base metal with no crack at the weld interface, and less mechanically mixed layer with no the intermetallic compound (IMC) interlayer on the weld interface, could be successfully achieved. In conclusion, it was suggested that the joint should be made with a low friction pressures such as 20 MPa to prevent generating of the mechanically mixed layer, an opportune friction time such as 6.0 s without generating the IMC interlayer, and a high forge pressure such as 240 MPa in order to achieve completely joining of the weld interface and the fracture on the A5052 base metal.Masaaki KIMURAYuusuke INUIMasahiro KUSAKAKoichi KAIZUThe Japan Society of Mechanical Engineersarticlefriction weldingaluminum alloypure copperfriction welding conditiontensile strengthmechanically mixed layerfractured pointMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 2, Pp 17-00398-17-00398 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	friction welding aluminum alloy pure copper friction welding condition tensile strength mechanically mixed layer fractured point Mechanical engineering and machinery TJ1-1570
spellingShingle	friction welding aluminum alloy pure copper friction welding condition tensile strength mechanically mixed layer fractured point Mechanical engineering and machinery TJ1-1570 Masaaki KIMURA Yuusuke INUI Masahiro KUSAKA Koichi KAIZU Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
description	This paper described the tensile strength of friction welded joint between Al-Mg alloy (JIS A5052) and pure copper (OFC). In particular, the joining phenomena during the friction process and the effects of friction welding condition such as friction pressure, friction time and forge pressure on the joint strength have been investigated, and the metallurgical characteristics of joints have been also observed and analyzed. The adjacent region of the weld interface at the A5052 side was upset during the friction process, although that of the OFC side was hardly upset. When the joint was made with a friction pressure of 30 MPa, all joints fractured at the weld interface because those joints had the not-joined region at this portion. To reduce the not-joined region, the joint was made with increasing forge pressure. All joints did not have a joint efficiency of 100% (same tensile strength as the A5052 base metal) and the fracture on the A5052 base metal without crack at the weld interface, although the joint efficiency increased with increasing forge pressure. It was showed that the joint had the mechanically mixed layer as the lamellar structures of A5052 and OFC on the adjacent region of the weld interface at the A5052 side, and that layer influenced to the fractured point of the joint. The mechanically mixed layer decreased with decreasing friction time and with decreasing friction pressure after the initial peak. Then, the joint, which had the same tensile strength as the A5052 base metal, the fracture on the A5052 base metal with no crack at the weld interface, and less mechanically mixed layer with no the intermetallic compound (IMC) interlayer on the weld interface, could be successfully achieved. In conclusion, it was suggested that the joint should be made with a low friction pressures such as 20 MPa to prevent generating of the mechanically mixed layer, an opportune friction time such as 6.0 s without generating the IMC interlayer, and a high forge pressure such as 240 MPa in order to achieve completely joining of the weld interface and the fracture on the A5052 base metal.
format	article
author	Masaaki KIMURA Yuusuke INUI Masahiro KUSAKA Koichi KAIZU
author_facet	Masaaki KIMURA Yuusuke INUI Masahiro KUSAKA Koichi KAIZU
author_sort	Masaaki KIMURA
title	Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
title_short	Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
title_full	Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
title_fullStr	Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
title_full_unstemmed	Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper
title_sort	effects of friction welding conditions on tensile strength of friction welded joint between 5052 al alloy and pure copper
publisher	The Japan Society of Mechanical Engineers
publishDate	2018
url	https://doaj.org/article/45c3c713f6504857819c45467c2401f5
work_keys_str_mv	AT masaakikimura effectsoffrictionweldingconditionsontensilestrengthoffrictionweldedjointbetween5052alalloyandpurecopper AT yuusukeinui effectsoffrictionweldingconditionsontensilestrengthoffrictionweldedjointbetween5052alalloyandpurecopper AT masahirokusaka effectsoffrictionweldingconditionsontensilestrengthoffrictionweldedjointbetween5052alalloyandpurecopper AT koichikaizu effectsoffrictionweldingconditionsontensilestrengthoffrictionweldedjointbetween5052alalloyandpurecopper
_version_	1718409715990396928

Effects of friction welding conditions on tensile strength of friction welded joint between 5052 Al alloy and pure copper

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