Dynamic strength of friction welded joint of 6061 aluminum alloy to SUS304 stainless steel.

Ochi, Hiizu; Ogawa, Kōichi; Yamamoto, Yoshiaki; Suga, Yasuo

doi:10.2464/jilm.47.347

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Generally speaking, forge pressure will be able to reduce the extent of a softened region from the joint and to improve the joint efficiency. 9,[31][32][33][34][35][36][37] In an attempt to push out a softened region on the P-Al side, the effect of forge pressure on joint efficiency was investigated. Figure 11 shows the relationship between the forge pressure and the joint efficiency of the joints.…”

Section: Influence Of Forge Pressurementioning

confidence: 99%

“…This result differed from many results of friction welded joints between dissimilar materials. 9,[31][32][33][34][35][36][37] On the other hand, the tensile strength of the friction welded joints such as Al alloy/copper 36 and copper/steel 37 decreased with increasing forge pressure. That is, several friction welded joints made with higher forge pressure were fractured from the base metal although those joints did not achieve 100% joint efficiency.…”

Section: Influence Of Forge Pressurementioning

confidence: 99%

“…5 Many researchers have reported that the mechanical and metallurgical properties of friction welded joints between Al or its alloys and steel show desirable characteristics. [6][7][8][9][10][11][12][13][14] In addition, the friction welded joint between Al and steel was affected by the IMC that was generated at the weld interface and the joint had the brittle fracture of the joint occurring in the IMC. [12][13][14] However, the joining mechanism of friction welding between dissimilar materials such as Al and steel has not been fully clarified, so that the detail friction welding conditions have not been clarified.…”

Section: Introductionmentioning

confidence: 99%

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Joining phenomena and joint strength of friction welded joint between pure aluminium and low carbon steel

Kimura¹,

Ishii²,

Kusaka³

et al. 2009

Science and Technology of Welding and Joining

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This paper describes the joining phenomena and joint strength of friction welded joints between pure aluminium (P-Al) and low carbon steel friction welds. When the joint was made at a friction pressure of 30 MPa with a friction speed of 27?5 s 21 , the upsetting (deformation) occurred at the P-Al base metal. P-Al transferred to the half radius region of the weld interface on the low carbon steel side, and then it transferred toward the entire weld interface. When the joint was made at a friction time of 0?9 s, i.e. just after the initial peak of the friction torque, it had y93% joint efficiency and fractured on the P-Al side. This joint had no intermetallic compound at the weld interface. Then, the joint efficiency slightly decreased with increasing friction time. The joint had a small amount of intermetallic compound at the peripheral region of the weld interface when it was made at a friction time of 2?0 s. When the joint was made at a friction time of 0?9 s, the joint efficiency decreased with increasing forge pressure, and all joints were fractured at the P-Al side. Although the joint by forge pressure of 90 MPa had hardly softened region, it had y83% joint efficiency. To clarify the fact of decreasing joint efficiency, the tensile strength of the P-Al base metal at room temperature was investigated, and the tensile test was carried out after various compression stresses and temperatures. The tensile strength of the P-Al base metal has decreased with increasing compression stress at any temperature. Hence, the fact that the joint did not achieve 100% joint efficiency was due to the decrease in the tensile strength of the P-Al base metal by the Bauschinger effect. To obtain higher joint efficiency and fracture on the P-Al side, the joint should be made without higher forge pressure, and with the friction time at which the friction torque reaches the initial peak.

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Section: Influence Of Forge Pressurementioning

confidence: 99%

Section: Influence Of Forge Pressurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Joining phenomena and joint strength of friction welded joint between pure aluminium and low carbon steel

Kimura¹,

Ishii²,

Kusaka³

et al. 2009

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

show abstract

“…5 Many researchers have reported that the mechanical and metallurgical properties of the friction welded joints between Al and steel show desirable characteristics. [6][7][8][9][10][11][12][13][14] The friction welded joint between Al and steel is also affected by the IMC, which is generated at the weld interface and causes a brittle fracture to the joint. [12][13][14] However, almost all the friction welded joints between the Al alloy and steel did not have excellent joint properties such as 100% joint efficiency.…”

Section: Introductionmentioning

confidence: 99%

Joining phenomena and joint strength of friction welded joint between aluminium–magnesium alloy (AA5052) and low carbon steel

Kimura

Ishii

Kusaka

et al. 2009

Science and Technology of Welding and Joining

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The joining phenomena and the joint strength of an Al-Mg alloy (AA5052) and low carbon steel (LCS) friction welded joints were investigated. The weld interface of the LCS side at a friction time of 1?2 s had a slightly transferred AA5052, and then the entire weld interface had it at a friction time of 3?0 s or longer. The joint efficiency increased with increasing friction time, but it decreased at a friction time of 12?0 s or longer. The joint at a friction time of 3?0 s with forge pressure of 190 MPa had 100% joint efficiency and the AA5052 base metal fracture with no crack at the weld interface. The weld interface of these joints also had no intermetallic compound. On the other hand, the joint at a friction time of 8?0 s, which had y97% joint efficiency, fractured between the AA5052 side and the weld interface because it had the intermetallic compound at the weld interface.

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“…The intermediate layer consisting of a brittle intermetallic compound (IMC) interlayer will generate on the joint interface of both dissimilar metals, so that IMC interlayer will give fatal damage to equipments. 1 Some researchers reported the mechanical and metallurgical properties of dissimilar joints, which were made with various welding method and subjected to PWHT, such as friction welding, 2–4 friction stir welding, 5–7 explosion welding, 8 laser welding, 9–11 electron beam welding 12,13 and arc welding. 14–16 The generating of IMC interlayer of friction welding method is especially lower than that of fusion welding one, since strong plastic flow is produced at the weld interface and its adjacent region during the friction process.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of pure-titanium and low carbon steel friction-welded joint with post-weld heat-treatment

Kimura

Fuji

2016

Materials Science and Technology

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The characteristics of friction-welded joint between commercially pure-titanium (CP-Ti) and low carbon steel, of which was subjected to post-weld heat-treatment (PWHT), was investigated. When the joint was made with friction speed of 25 s−1, friction pressure of 200 MPa, friction time of 2.5 s and forge pressure of 250 MPa, it had the same tensile strength as that of the CP-Ti base metal. The joint had no intermediate layer consisting of intermetallic compound (IMC interlayer) at the weld interface. The joint efficiency of the joint subjected to PWHT decreased with increasing heating temperature and its holding time, and the joint fractured at the weld interface although it had no IMC interlayer. The void was generated on the weld interface of the joint during PWHT process.

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Dynamic strength of friction welded joint of 6061 aluminum alloy to SUS304 stainless steel.

Cited by 8 publications

References 3 publications

Joining phenomena and joint strength of friction welded joint between pure aluminium and low carbon steel

Joining phenomena and joint strength of friction welded joint between pure aluminium and low carbon steel

Joining phenomena and joint strength of friction welded joint between aluminium–magnesium alloy (AA5052) and low carbon steel

Characteristics of pure-titanium and low carbon steel friction-welded joint with post-weld heat-treatment

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