Tailoring Thermally Induced Nano-Quasicrystallization and Deformation-Assisted Nanocrystallization for Mechanical Property Improvement in Zr-Al-Ni-Cu-Pd Bulk Metallic Glasses

• Saida Junji

  Center for Interdisciplinary Research, Tohoku University

• Setyawan Albertus D.

  Center for Interdisciplinary Research, Tohoku University

• Kato Hidemi

  Institute for Materials Research, Tohoku University

• Matsushita Mitsuhide

  Advanced Technology Division, JEOL Ltd.

• Inoue Akihisa

  WPI-Advanced Institute for Materials Research, Tohoku University

抄録

The material design tailoring of a synergistic effect of an in-situ nano secondary phase formation and deformation-induced nanocrystallization for improving the mechanical strength and ductility, has been investigated in Zr₆₅Al_7.5Ni₁₀Cu_17.5−xPd_x bulk metallic glasses (BMGs). As-cast Zr₆₅Al_7.5Ni₁₀Cu_17.5−xPd_x (x=5–17.5) BMGs have significant ductility in compressive deformation, which is attributed to deformation-induced dynamic nanocrystallization. The 10 at% Pd-containing BMG with a low volume fraction of the quasicrystalline (QC) phase of less than 6% exhibits increases in strength and Young’s modulus, in addition to a remaining plasticity of ∼5%, compared with the monolithic glassy alloy. Such improvements in the mechanical properties originate from the combination of two effects of in-situ homogeneous nano-QC formation and deformation-induced inhomogeneous nanocrystallization. The present method should be regarded as a new technique for the production of BMGs with high strength and good ductility.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 50 (8), 2079-2086, 2009

  公益社団法人 日本金属学会

キーワード

• metallic glasses
• nanostructure
• quasicrystals
• nanocomposite
• ductility
• deformation-induced nanocrystallization

詳細情報

• CRID: 1390282679227147904
• NII論文ID: 10025155221
• NII論文ID: 130004824461
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2009135
• COI: 1:CAS:528:DC%2BD1MXhtFOjs7zO
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 10298053
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10298053
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/50/8/50_M2009135/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可