Title:
PROCESS FOR PRODUCING MAGNESIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2006/098381
Kind Code:
A1
Abstract:
In producing an yttrium-containing magnesium alloy through melting, yttrium segregation is inhibited to obtain an ingot even in chemical composition. An yttrium-containing magnesium alloy is melted and then solidified within a solidification time of 200 seconds to produce an ingot. Desirably, the magnesium alloy melt is stirred and allowed to stand before being subjected to the solidification. The magnesium alloy contains yttrium in an amount of, e.g., 0.5-20 mass%. This process less causes segregation and is effective in producing a magnesium alloy even in chemical composition. Because of this, in producing, e.g., an alloy which considerably changes in performance with ingredient concentration, such as, e.g., a functional material, a high-quality product can be produced in a satisfactory yield. For accomplishing this, the process comprises melting raw materials in a melting furnace, sufficiently stirring the melt after complete melting, allowing the melt to stand, and then casting it into a casting mold designed so as to solidify it within the solidification time shown above. It is also possible to shorten the solidification time by casting into a casting mold sufficiently cooled with water.
Inventors:
Aoki, Yasuhiro c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 06, 05185, JP)
Yamada, Hitohisa c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Muro, Masahiko c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Ienaga, Yuuichi c/o Honda R & D Co. Ltd. (1-4-1, Chuo, Wako-sh, Saitama 93, 35101, JP)
Yamada, Hitohisa c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Muro, Masahiko c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Ienaga, Yuuichi c/o Honda R & D Co. Ltd. (1-4-1, Chuo, Wako-sh, Saitama 93, 35101, JP)
Application Number:
PCT/JP2006/305161
Publication Date:
September 21, 2006
Filing Date:
March 15, 2006
Export Citation:
Assignee:
THE JAPAN STEEL WORKS, LTD. (1-2 Yurakucho 1-chome, Chiyoda-ku Tokyo, 56, 10084, JP)
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 10785, JP)
Aoki, Yasuhiro c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 06, 05185, JP)
Yamada, Hitohisa c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Muro, Masahiko c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Ienaga, Yuuichi c/o Honda R & D Co. Ltd. (1-4-1, Chuo, Wako-sh, Saitama 93, 35101, JP)
HONDA MOTOR CO., LTD. (1-1 Minami-Aoyama 2-chome, Minato-ku Tokyo, 56, 10785, JP)
Aoki, Yasuhiro c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 06, 05185, JP)
Yamada, Hitohisa c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Muro, Masahiko c/o The Japan Steel Works Ltd. (4, Chatsumachi, Muroran-sh, Hokkaido 05, 05185, JP)
Ienaga, Yuuichi c/o Honda R & D Co. Ltd. (1-4-1, Chuo, Wako-sh, Saitama 93, 35101, JP)
International Classes:
B22D7/00; B22D21/04; B22D7/00; B22D21/00
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office, 7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo, 105-0003, JP)