Glass Forming Ability and Mechanical Properties of Misch Metal-Based Bulk Metallic Glass Matrix Composite

• Kim Ji-Hun

  Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University

• Lee Joo Yun

  Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University

• Park Jin Man

  Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University

• Fleury Eric

  Advanced Metals Research Center, Korea Institute of Science and Technology

• Kim Won Tae

  Applied Science Division, Chongju University

• Kim Do Hyang

  Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University

抄録

The effect of replacement of lanthanide by misch metal (Mm) in La-Al-TM (TM; transition metal, Ni, Cu and Co) alloys has been investigated to evaluate the possibility of fabrication of in-situ glass matrix composites with enhanced properties. For the as-cast cylindrical Mm₅₅Al₂₅Ni₁₀Cu₁₀ alloy ingot with 3 mm diameter, the microstructure is consisted of two kinds of a few μm size crystalline phases (volume fraction: 4.6%) uniformly distributed in the metallic glass matrix. The substitution of La by Mm reduces the glass forming ability (GFA), i.e., lower the reduced glass transition temperature, T_rg (= T_g/T_L, where T_L is the liquidus temperature) and smaller superliquid temperature region, ΔT_x (= T_x - T_g, where, T_g is the glass transition temperature and T_x the onset temperatures of crystallization), enabling the fabrication of in-situ BMG matrix composite. The Mm₅₅Al₂₅Ni₁₀Cu₁₀ metallic glass matrix composite sample exhibits the compressive fracture strength of 931 MPa, and in particular enhanced the compressive plastic strain of 1.2% before failure. The enhanced strength and ductility was explained by the presence of fine crystalline phases embedded in the BMG matrix, which led to a multiple shear band formation.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 45 (4), 1395-1399, 2004

  公益社団法人 日本金属学会

キーワード

• bulk metallic glass composite
• glass forming ability
• misch metal base alloy

詳細情報

• CRID: 1390282679226704384
• NII論文ID: 130004452477
• NII論文ID: 10012906640
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.45.1395
• COI: 1:CAS:528:DC%2BD2cXksVygsLs%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6927913
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6927913
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/45/4/45_4_1395/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可