Ahresty Corporation

The University of Toyama

Yorozu Corporation

Emi Yanagihara

Shunzo Aoyama

Seiji Saikawa

Keiji Nakahara

Yasushi Kanno

Shin Orii

Kiyoshi Terayama

Gen Okazawa

Susumu Ikeno

Hiroshige Niwa

Suguru Takeda

An Al&#x2014;Mg&#x2014;Si-based aluminum alloy includes 0.015 to 0.12 mass % of Sr, the aluminum alloy producing a cast metal structure in which MgSi is crystallized in a fine agglomerate form.

Casting aluminum alloy and casting produced using the same

A welding method of carrying out an alternating current arc welding by switching polarities of a voltage applied between a wire and workpieces when weld-connecting the workpieces to each other by use of the wire, the workpieces including an aluminum cast material and an aluminum wrought material. In the welding method, the alternating current arc welding is carried out in a way to satisfy|/(|)&#x2267;0.128where A denotes an integrated value of an electric current over a time for which the polarity of the wire is positive, and B denotes an integrated value of an electric current over a time for which the polarity of the wire is negative; and thereby an amount of heat input into the aluminum cast material during the welding is set at not more than 67.8 J/mm.

Welding article and welding method of carrying out an alternating current arc welding

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Toyohashi, Japan

Emi Yanagihara