Formation and Mechanical Properties of Porous Pd–Pt–Cu–P Bulk Glassy Alloys

• Wada Takeshi

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Takenaka Kana

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Nishiyama Nobuyuki

  RIMCOF Tohoku Univ. Lab., R&D Institute of Metals and Composites for Future Industries

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

書誌事項

タイトル別名

• Formation and Mechanical Properties of Porous Pd–Pt–Cu–P Bulk Glassy Alloys

抄録

Porous Pd₃₅Pt₁₅Cu₃₀P₂₀ bulk glassy alloy rods were prepared by holding the alloy melts under 1 MPa hydrogen atmosphere, followed by water quenching in reduced hydrogen pressures of 0.9 or 0.1 MPa. The volume fraction and size of pores were controlled by hydrogen pressure of the atmosphere. No crystalline phase was observed over the whole pore wall regions. The porous alloys show slightly decreased thermal stability as compared with the pore-free one, but still keep a large supercooled liquid region. The porous alloy rods exhibited significant plastic elongations in compression while the pore-free rod fractured instantly after the elastic strain limit. The high plasticity of the porous alloys is presumed to originate from the generation of a high density of shear-bands resulting from the effect of stress concentration around the pores.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 46 (12), 2777-2780, 2005

  公益社団法人 日本金属学会

キーワード

• porous bulk glassy alloy
• palladium-based alloy
• mechanical property

詳細情報

• CRID: 1390282679227272960
• NII論文ID: 130004452708
• NII論文ID: 10017149823
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.46.2777
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 7757797
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7757797
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/46/12/46_12_2777/_pdf
• 本文言語コード: en
• データソース種別:
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