Aluminum alloy material for forging and continuous casting process therefor
AssigneesHonda Giken Kogyo Kabushiki Kaisha, Toyama Alloy Co., Ltd.
InventorsKiyotaka Touma, Yushi Amaki, Ichiro Fujimoto, Tomokazu Yamashita, Hidetoshi Takagi, Toru Watanabe
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Abstract
An aluminum alloy material for forging obtained by a continuous casting process, the alloy comprising: a surface of which roughness is not more than Ra 35, and a segregation layer having 0.1 to 2 mm thickness and generated in the surface. The cast surface after continuous casting is smooth without peeling, a cast material can be forged without any treatment, and a segregation layer remains in a surface layer, thereby inhibiting coarsening of recrystallization grains and exhibiting superior toughness and strength.
Claims4
An aluminum alloy billet as cast for forging, obtained by a continuous casting process, the alloy comprising:
- 0.005 to 0.015 wt % of Ca, a surface of which roughness is not more than Ra 17, and a segregation layer having 0.2 to 2 mm thickness and generated in the surface.
An aluminum alloy billet as cast for forging, obtained by a continuous casting process, the alloy comprising:
- 0.0005 to 0.020 wt % of Be, a surface of which roughness is not more than Ra 17, and a segregation layer having 0.2 to 2 mm thickness and generated in the surface.
Dependencies are inferred from the claim text.