Hot extrusion for Al-Si-(Fe, Cu) hyper-eutectic cast alloys

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概要

• 論文の詳細を見る

• For hyper-eutectic Al-Si-(Fe, Cu) cast materials in large scale ingots, we have studied microstructural modification by thermomechanical treatment to produce a heavily deformable material. Cast materials contained coarse primary Si crystals in a few hundred micron diameter or acicular intermetallic compound in several hundred micron length. Even by multiple-step cold-rolling, sample fracture of the cast alloys occurred with more extrusion step to the cast materials. A novel process, repeated thermomechanical treatment (RTMT), could be applied to extruded materials. The cold work at 77K and intermediate annealing cycle was repeated four times with 66% reduction in section.

• 未踏科学技術協会の論文

著者

• Umezawa O

  Yokohama National Univ. Yokohama Jpn

• Umezawa Osamu

  Department Of Mechanical Engineering And Materials Science Yokohama National University

• Umezawa O.

  National Institute For Materials Science

• Umezawa Osamu

  National Institute For Materials Science

• Umezawa Osamu

  National Research Institute For Metals

• Yokoyama Hisanaga

  Graduate Student Kogakuin University

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