Effect of Friction Speed on Initial Seizure Portion on Welded Interface-Study of Joining Mechanism of Friction Welding (Report 4)-

Kimura, Masao; Ohtsuka, Yosuke; An, Gyubaek; Kusaka, Masahiro; Suyama, Kenji; Fuji, Akiyoshi

doi:10.2207/qjjws.21.615

Cited by 30 publications

(31 citation statements)

References 6 publications

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“…That is, the joint with the MCS base metal fracture could be made with a friction pressure of 90 MPa. These results were similar to that of the MCS joint which was made by the generally friction welding method (Kimura et al, 2003). Hence, it is desirable that the joint with the MCS base metal fracture is joined with high friction pressure.…”

Section: Resultssupporting

confidence: 79%

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Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Kimura

Utsumi

Kusaka

et al. 2011

Journal of Materials Processing Technology

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Section: Resultssupporting

confidence: 79%

“…This value is greater than that of the critical hardness of HCS with a quenching crack (Owaku, 2000). That is, it was considered that this HCS joint produced a quenching crack at the weld interface (Kimura et al, 2003). Hence, the HCS joint with a friction pressure of 90 MPa did not obtain the HCS base metal fracture.…”

Section: Improving Joint Strengthmentioning

confidence: 99%

Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Kimura

Utsumi

Kusaka

et al. 2011

Journal of Materials Processing Technology

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“…In particular, the experimental methods of (2) and (3) were used to obtain the joint without braking deformation. The details of these methods have been described in previous reports (Kimura, et al, 2002a(Kimura, et al, , 2002b(Kimura, et al, , 2002c(Kimura, et al, , 2003a(Kimura, et al, , 2003b2005a;2005b, 2009a, 2009b, 2009c, 2009d, 2011a, 2011b, 2013, 2014.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the authors also clarified the joining mechanism and the joint mechanical properties of friction welded joint for some dissimilar material joints as following combinations: Al-system materials and low carbon steel (LCS) (Kimura, et al, 2009a(Kimura, et al, , 2009b(Kimura, et al, , 2013, Cu-system materials and LCS (Kimura, et al, 2009c(Kimura, et al, , 2009d, pure Ti and LCS (Kimura, et al, 2014), and pure Cu and pure Ti (Kimura, et al, 2011a(Kimura, et al, , 2011b. If combinations of dissimilar materials such as Al-system materials and Cu-system materials can be joined using the same welding method as that shown in previous reports (Kimura, et al, 2002a(Kimura, et al, , 2002b(Kimura, et al, , 2002c(Kimura, et al, , 2003a(Kimura, et al, , 2003b2005a;2005b, 2009a, 2009b, 2009c, 2009d, 2011a, 2011b, 2013, 2014, the joining mechanism will be clarified. In particular, to clarify the relationship between joining phenomena and tensile strength of that combination joint is strongly important, because that will be estimated for expansion in the use of the electricity industry field.…”

Section: Introductionmentioning

confidence: 91%

“…In previous works (Kimura, et al, 2002a(Kimura, et al, , 2002b(Kimura, et al, , 2002c(Kimura, et al, , 2003a(Kimura, et al, , 2003b(Kimura, et al, , 2005a(Kimura, et al, , 2005b, the authors clarified the joining mechanism during the friction welding process and the joint mechanical properties (mainly tensile strength) of similar material combinations which were various carbon steels or Al-system materials. Furthermore, the authors also clarified the joining mechanism and the joint mechanical properties of friction welded joint for some dissimilar material joints as following combinations: Al-system materials and low carbon steel (LCS) (Kimura, et al, 2009a(Kimura, et al, , 2009b(Kimura, et al, , 2013, Cu-system materials and LCS (Kimura, et al, 2009c(Kimura, et al, , 2009d, pure Ti and LCS (Kimura, et al, 2014), and pure Cu and pure Ti (Kimura, et al, 2011a(Kimura, et al, , 2011b.…”

Section: Introductionmentioning

confidence: 99%

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Joining phenomena and tensile strength of friction welded joint between pure aluminum and pure copper

Kimura

Inui

Kusaka

et al. 2015

Mechanical Engineering Journal

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This paper describes the joining phenomena and the tensile strength of friction welded joint between type 1070 pure aluminum (CP-Al) and oxygen free copper (OFC). When the joint was made at a friction pressure of 30 MPa with a friction speed of 27.5 s −1 , the upsetting (deformation) occurred at the CP-Al side. When the joint was made at a friction time of 2.0 s, the whole weld interface on the OFC side had the transferred CP-Al, and it was obtained approximately 30% joint efficiency. Then, the joint efficiency increased with increasing friction time, and it was obtained approximately 63% joint efficiency at a friction time of 12.0 s. The joint fractured at the weld interface, which had a CP-Al adhering to the weld interface on the OFC side. When the joint was made with friction times of 2.0 s and 6.0 s, the joint efficiency increased with increasing forge pressure and then the joint was obtained the CPAl side fracture at a forge pressure of 135 MPa or higher. However, the joint did not achieve 100% joint efficiency because the adjacent region of the weld interface at the CP-Al side was softened. In addition, the joint at a friction time of 2.0 s had no intermetallic compound (IMC) layer at the weld interface although the not-joined region was slightly observed. On the other hand, the joint at a friction time of 6.0 s did not have the not-joined region at the weld interface although the IMC layer was slightly observed. In conclusion, to obtain higher joint efficiency with fracture on the CP-Al side, the joint should be made with higher forge pressure, and with the suitable friction time at which the entire weld interface of the OFC side had the transferred CP-Al. IntroductionBecause an expansion in the use of dissimilar metal joints (referred to as dissimilar joints) is expected and widely used in various component parts, easily welding method for dissimilar metal joints is required. On the other hand, dissimilar welding operations have several severe problems in industrial usage. One problem will occur when the dissimilar joints are welded by using fusion welding processes which conventionally produce intermediate layer (interlayer) consisting of brittle intermetallic compound (IMC) at the joint interface of both base metals to be joined. The interlayers usually give detrimental damages on mechanical and metallurgical properties of dissimilar joints (For example, American Welding Society, 1982). In particular, fusion welded joints between aluminum or its alloys (referred to as the Al-system material) and copper or its alloys (referred to as the Cu-system material) have also some problems, e.g. the generation of blowholes and cracks at the joint interface (For example, Mizuno et al., 1999). Therefore, a welding process is urgently required, which will reduce the degradation of the mechanical and metallurgical properties of the joints between Al-system material and Cu-system material. 1

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The corona bond response to normal stress distribution during the process of rotary friction welding

Jin

Liao

et al. 2018

Weld World

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Effect of Friction Speed on Initial Seizure Portion on Welded Interface-Study of Joining Mechanism of Friction Welding (Report 4)-

Cited by 30 publications

References 6 publications

Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Strength enhancement of autocompleting medium and high carbon steels friction welded joints

Joining phenomena and tensile strength of friction welded joint between pure aluminum and pure copper

The corona bond response to normal stress distribution during the process of rotary friction welding

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