Spot Welding of Aluminum and Steel Sheet (I). Spot Welding of Aluminum and Steel Sheet with insert of Aluminum Clad Steel Sheet.

Yasuyama, Msanori; Ogawa, Kōichi; Taka, Takao

doi:10.2207/qjjws.14.314

Cited by 49 publications

(13 citation statements)

References 1 publication

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“…The hardness in the reaction layer in the base alloy joint (Al 3 Fe IMC) is lower than that of Al 5 Fe 2 as normally measured using micro-Vickers hardness. 13) It should be noted that the hardness in the reaction layer of the Al 12 Fe 3 Si IMC is lower than that of Al 3 Fe IMC in the Si-containing alloy. The effect becomes larger by incorporating 2% copper to Al 12 F 3 Si IMC in the (Si+Cu)-containing alloy joint.…”

Section: Resultsmentioning

confidence: 93%

Nanoindentation Measurement of Interfacial Reaction Layers in 6000 Series Aluminum Alloys and Steel Dissimilar Metal Joints with Alloying Elements

et al. 2011

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Nanoindentation measurements were successfully applied to the interfacial reaction layers in dissimilar metal joints of 6000 series aluminum alloys containing alloying elements to steel in order to characterize their mechanical properties. The nanoindentation hardness of the reaction layer formed at the aluminum side was lower than that formed at the low carbon steel (SPCE) side of the investigated joints. At the aluminum side, the nanoindentation hardness changed by the addition of alloying elements. The hardness of the resulting Al 12 Fe 3 Si intermetallic compound (IMC) (and the same IMC containing Cu) was lower than that of Al 3 Fe. In comparison with the hardness values obtained from bulk Al-Fe binary series IMCs, it is considered that hardness changes of interfacial reaction layers are derived from the crystal structural changes produced by the alloying elements. The result of micro-testing of Al-Fe series IMCs indicates that the modification of the interfacial reaction layer by alloying elements contributes to higher ductility and the improvement of joint strength through crystal structural change.

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Section: Resultsmentioning

confidence: 93%

Nanoindentation Measurement of Interfacial Reaction Layers in 6000 Series Aluminum Alloys and Steel Dissimilar Metal Joints with Alloying Elements

et al. 2011

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“…These IMCs can be grouped into Fe-rich compounds such as FeAl and Fe3Al, and Al-rich compounds such as FeAl2, Fe2Al5 and FeAl3. The Al-rich IMCs are characterized as hard and brittle with low strength while the Fe-rich IMCs are soft with slight ductility and high strength [16][17]. The tough oxide layer on the Al alloy surface and the ability to control the FeAl IMC thickness are issues that have so far hindered the successful joining of Al alloys and steel [18].…”

Section: Introductionmentioning

confidence: 99%

Brazed Joint Interface Bonding Strength of AR500 Steel and AA7075 Aluminium Alloy

Muhamed

Omar²,

Abdullah³

et al. 2018

Preprint

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Joining of aluminium alloys to steels has been extensively studied, especially in the automotive sector. However, aluminium alloys are known to be difficult to join with steels when methods involving fusion welding are used because of hot cracking problem. Hence, a high strength joint between these dissimilar metals would be of benefit especially in reducing the weight of products. In this work the torch brazing method was applied to join AR500 steel with AA7075 aluminium alloy using Al-Si-Zn base filler metal at various flame times. The effect of the brazing work on the intermetallic phase formation and the mechanical strength of the joints were investigated. In this work, the maximum shear load obtained was 6460 N and the presence of the intermetallic phases had reduced the shear strength of the brazed joints. However, the torch brazing process using Al-Si-Zn filler metal had successfully facilitated the joining of these dissimilar metals.

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“…Steel and aluminium alloys have been joined by RSW, but this requires introducing a sheet of aluminium clad steel at the interface, thereby creating a material layer compatible with both alloys. [1][2][3] Reasonably good strengths can be obtained by this method, but energy absorption of these joints is lower than for self-piercing rivets. Friction stir spot welding has been used to join aluminium alloy sheet to galvanised mild steel sheet, where the material thicknesses were y1 mm and where various coating properties of the mild steel sheet were shown to affect joint strength.…”

Section: Introductionmentioning

confidence: 99%

Spot joining of AA 5754 and high strength steel sheets by consumable bit

Miles

Feng

Kohkonen

et al. 2010

Science and Technology of Welding and Joining

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Spot joining of dissimilar metal alloys is difficult because of differences in melting temperature as well as differences in composition. If a fusion welding process like resistance spot welding is employed, then alloys mix in the fusion zone and can create brittle intermetallic compounds during solidification. When self-piercing riveting (SPR) is used, the alloys to be joined must be ductile enough to be formed around the rivet. In this paper, a new approach to joining dissimilar metal alloys has been studied, where a consumable bit has been used to create a spot joint between dissimilar alloys. The resulting joint has both metallurgical and mechanical bonding characteristics and can be made between very soft and very hard alloys, like dual phase (DP) 590 and DP 980 and light metals like AA 5754. Lap shear strengths of joints made by friction bit joining (FBJ) are similar to or better than comparable joints made by self-piercing riveting.

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Spot Welding of Aluminum and Steel Sheet (I). Spot Welding of Aluminum and Steel Sheet with insert of Aluminum Clad Steel Sheet.

Cited by 49 publications

References 1 publication

Nanoindentation Measurement of Interfacial Reaction Layers in 6000 Series Aluminum Alloys and Steel Dissimilar Metal Joints with Alloying Elements

Nanoindentation Measurement of Interfacial Reaction Layers in 6000 Series Aluminum Alloys and Steel Dissimilar Metal Joints with Alloying Elements

Brazed Joint Interface Bonding Strength of AR500 Steel and AA7075 Aluminium Alloy

Spot joining of AA 5754 and high strength steel sheets by consumable bit

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