Wettability, microstructure and properties of 6061 aluminum alloy/304 stainless steel butt joint achieved by laser-metal inert-gas hybrid welding-brazing

Aluminum foam sandwich structure is a new type of composite material with excellent mechanical and functional properties. As it is known that properties of aluminum foam sandwiches (AFS) vary if the foam core is sandwiched between different face sheets. To study the effects of face-sheet materials on the mechanical properties of AFS and enable a better understanding of the usage of such AFS structures under flexural load, AFS sandwiched by 6061-aluminum alloy face-sheets and 304 stainless steel face-sheets were fabricated and investigated under three-point bending by using WDW-T100 electronic universal tensile testing machine. Results showed that 6061-aluminum alloy reinforced AFS had the same peak load value with 304-stainless steel reinforced one almost so long as the thicknesses of the face-sheet material were the same and the foam core densities were the same too, but the energy absorption ability of 304-stainless steel reinforced AFS was much higher than that of 6061-aluminum alloy reinforced. However, the integrality of the 6061-sandwiched AFS was better than 304-sandwiched AFS. Deformation modes of the two types of AFS were also discussed in the present study.

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Impact Tensile Properties of Friction Welded Butt Joints between 6061 Aluminum Alloy and SUS 304 Stainless Steel.

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY ◽

10.2207/qjjws.20.415 ◽

2002 ◽

Vol 20 (3) ◽

pp. 415-424 ◽

Cited By ~ 2

Author(s):

Takashi YOKOYAMA ◽

Koichi OGAWA

Keyword(s):

Stainless Steel ◽

Aluminum Alloy ◽

Tensile Properties ◽

304 Stainless Steel ◽

Butt Joints ◽

6061 Aluminum Alloy

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Microstructures of friction welded joint of 6061 aluminum alloy to 304 stainless steel.

Journal of Japan Institute of Light Metals ◽

10.2464/jilm.48.36 ◽

1998 ◽

Vol 48 (1) ◽

pp. 36-41 ◽

Cited By ~ 19

Author(s):

Shinji FUKUMOTO ◽

Mikio OHASHI ◽

Harushige TSUBAKINO ◽

Kozo OKITA ◽

Masatoshi ARITOSHI ◽

...

Keyword(s):

Stainless Steel ◽

Aluminum Alloy ◽

Welded Joint ◽

304 Stainless Steel ◽

6061 Aluminum Alloy

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STUDY ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 304 STAINLESS STEEL JOINTS BY TIG–MIG HYBRID WELDING

Surface Review and Letters ◽

10.1142/s0218625x18500427 ◽

2018 ◽

Vol 25 (01) ◽

pp. 1850042 ◽

Cited By ~ 6

Author(s):

EMMANUEL O. OGUNDIMU ◽

ESTHER T. AKINLABI ◽

MUTIU F. ERINOSHO

Keyword(s):

Stainless Steel ◽

Industrial Applications ◽

Inert Gas ◽

304 Stainless Steel ◽

High Tech ◽

Hybrid Welding ◽

Mig Welding ◽

Delta Ferrite ◽

Welding Processes ◽

A Current

Stainless steel is a family of Fe-based alloys having excellent resistance to corrosion and as such has been used imperatively for kitchen utensils, transportation, building constructions and much more. This paper presents the work conducted on the material characterizations of a tungsten inert gas (TIG)–metal inert gas (MIG) hybrid welded joint of type 304 austenitic stainless steel. The welding processes were conducted in three phases. The phases of welding employed are MIG welding using a current of 170[Formula: see text]A, TIG welding using a current of 190[Formula: see text]A, and a hybrid TIG–MIG welding with currents of 190/170[Formula: see text]A, respectively. The MIG, TIG, and hybrid TIG–MIG weldments were characterized with incomplete penetration, full penetration and excess penetration of weld. Intergranular austenite was created toward transition and heat affected zones. The thickness of the delta ferrite ([Formula: see text]-Fe) formed in the microstructures of the TIG weld is more than the thickness emerged in the microstructures of MIG and hybrid TIG–MIG welds. A TIG–MIG hybrid weld of specimen welded at the currents of 190/170[Formula: see text]A has the highest ultimate tensile strength value and percentage elongation of 397.72[Formula: see text]MPa and 35.7%. The TIG–MIG hybrid welding can be recommended for high-tech industrial applications such as nuclear, aircraft, food processing, and automobile industry.

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