Formation, Thermal Stability and Mechanical Properties of Ca-Based Bulk Glassy Alloys

• Amiya Kenji

  Inoue Supercooled Liquid, Exploratory Research for Advanced Technology, Japan Science and Technology Corporation

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

抄録

New bulk glassy alloys were formed in the Ca–Mg–Cu system by the copper mold casting method. The maximum rod diameter (d_max) for the formation of a glassy phase was 2 mm for Ca₆₇Mg₁₉Cu₁₄ and above 4 mm for Ca₅₇Mg₁₉Cu₂₄. The glass transition temperature (T_g), crystallization temperature (T_x), supercooled liquid region (ΔT_x=T_x−T_g) and reduced glass transition temperature (T_g⁄T_m) are 387 K, 407 K, 20 K and 0.60, respectively, for the former alloy and 404 K, 440 K, 36 K and 0.64, respectively, for the latter alloy. There is a tendency for d_max to increase with increasing ΔT_x and T_g⁄T_m. Young’s modulus (E) and compressive fracture strength are 38 GPa and 545 MPa, respectively, for the Ca₅₇Mg₁₉Cu₂₄ alloy rod with a diameter of 2 mm. The success of synthesizing bulk glassy alloys in the simple metal (Ca) base system makes it important as a basic alloy system for examining fundamental chemical and physical properties of bulk glassy alloys.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (1), 81-84, 2002

  公益社団法人 日本金属学会

キーワード

• calcium-based glassy alloy
• bulk glass
• reduced glass transition temperature
• simple metal base
• mechanical strength

詳細情報

• CRID: 1390001204246107008
• NII論文ID: 130004451653
• NII論文ID: 10012320532
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.43.81
• COI: 1:CAS:528:DC%2BD38XitlSrtbs%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6051406
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6051406
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/1/43_1_81/_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