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

Kimura, Masao; Utsumi, D.; Kusaka, Masahiro; Kaizu, Koichi

doi:10.1016/j.jmatprotec.2010.09.017

Cited by 3 publications

(1 citation statement)

References 12 publications

(18 reference statements)

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“…However, those results were obtained using various steels which have relatively good weldability. (11)− (14) Further investigation is necessary to clarify the properties of the joints made by other materials such as aluminum (Al) for the adaptability of an autocompleting friction welding method due to the weldability of those materials differed with steels. In particular, this method must be applied to such practical materials as Al alloys for industrial use, since they have more high specific strengths and excellent corrosion resistance than steels.…”

Section: Introductionmentioning

confidence: 99%

Joint Strength and Their Improvement of Type 5052 Aluminum Alloy Autocompleting Friction Welded Joint

Kimura

Kusaka

Kaizu

2013

JMMP

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This paper describes about the joint strength and their improvement of a type 5052 aluminum alloy (A5052) autocompleting friction welded joint, that welding method was developed by authors. When the joint was made at a friction pressure of 60 MPa, it had approximately 75% joint efficiency at a groove bottom thickness of 1.1 mm with an overhanging length of the weld faying surface part (overhanging length) for the fixed workpieces of 15 mm. Those joints had the flexural deformation of the fixed workpiece during the welding, although those had the circumferential shear fracture by the increasing insert thickness with reliability. To reduce the flexural deformation of the fixed workpiece, the joint was made with an overhanging length for the fixed workpieces of 5.0 mm. The joint had 100% joint efficiency with the base metal fracture at a groove bottom thickness of 1.4 mm which was made at a friction pressure of 80 MPa, although that did not achieve 100% joint efficiency at a friction pressure of 60 MPa. In addition, the joint with a groove bottom thickness of 1.3 mm or thin did not achieve 100% joint efficiency, and that with 1.5 mm or thick did not have the circumferential shear fracture. To obtain the generating of the circumferential shear fracture with reliability during the friction process and 100% joint efficiency with the base metal fracture, the joint should be made with thick insert piece, opportune groove bottom thickness of the insert piece, short overhanging length for the fixed workpieces, and relatively high friction pressure.

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Section: Introductionmentioning

confidence: 99%

Joint Strength and Their Improvement of Type 5052 Aluminum Alloy Autocompleting Friction Welded Joint

Kimura

Kusaka

Kaizu

2013

JMMP

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Simultaneous Friction Welding and Characterization of Joints Between 7075-T6 Al Alloy and Low-Carbon Steel Using Pure Al as an Insert Metal

Kimura

Kusaka

Kaizu

et al. 2019

J. of Materi Eng and Perform

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Examination of Insert Piece Shape for Joint of Low Carbon Steels using Brass Insert Piece by Autocompleting Friction Welding Method

Kimura¹,

Ishino²,

Kusaka³

et al. 2012

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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This paper describes the examination of the insert piece shape for the joint of a low carbon steel (LCS) fixed specimens using a brass insert piece by an autocompleting friction welding method, that method was developed by authors. The weld faying surface of the LCS specimen had a 10mm diameter, and the joint was made with a friction speed of 27.5rps (1650rpm) and a friction pressure of 90MPa. Then, the effect of the thickness and that at the bottom of the grooves (groove bottom thickness) for the brass insert piece on the joining phenomena and joint properties were investigated. The joint, which was made with an insert piece thickness of 4mm and a groove diameter of 11mm, had the circumferential shear fracture during the friction process at the groove bottom thickness of 0.95mm or below. However, some joints did not have the circumferential shear fracture although other joints had its fracture at a groove bottom thickness of 1.15mm or above. The joint efficiency of those joint had scatter, although that increased with increasing the groove bottom thickness and one of the joint had 100% joint efficiency at 1.45mm. That is, the joint, which had reliably the circumferential shear fracture with the 100% joint efficiency, was not obtained at an insert piece thickness of 4mm. To reliably obtain the joint which had the circumferential shear fracture with the 100% joint efficiency, the effect of the insert piece thickness was investigated. The joint efficiency increased with increasing insert piece thickness, and the scatter of that was decreased. When the joint was made with an insert piece thickness of 8mm and a groove diameter of 11mm, those had reliably the circumferential shear fracture with the 100% joint efficiency at the groove bottom thickness of 0.70 and 0.75mm. Also, when the joint was made with an insert piece thickness of 6mm and a groove diameter of 12mm, the joint had also reliably the circumferential shear fracture at the groove bottom thickness of 0.70mm. Therefore, a joint with 100% joint efficiency, which was made with the LCS with the brass insert piece, should be made with opportune brass insert piece shape of that thickness, the groove diameter, and the groove bottom thickness. In conclusion, a dissimilar joint was able to make by an autocompleting friction welding method.

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

Cited by 3 publications

References 12 publications

Joint Strength and Their Improvement of Type 5052 Aluminum Alloy Autocompleting Friction Welded Joint

Joint Strength and Their Improvement of Type 5052 Aluminum Alloy Autocompleting Friction Welded Joint

Simultaneous Friction Welding and Characterization of Joints Between 7075-T6 Al Alloy and Low-Carbon Steel Using Pure Al as an Insert Metal

Examination of Insert Piece Shape for Joint of Low Carbon Steels using Brass Insert Piece by Autocompleting Friction Welding Method

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