Formation and Thermal Stability of Ca-Mg-Ag-Cu 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

Abstract

Calcium-based bulk glassy alloys in Ca–Mg–Ag and Ca–Mg–Ag–Cu systems were produced by a metallic mold casting method. The maximum rod diameter (d_max) for the formation of a glassy phase was 4 mm for Ca₆₀Mg₂₀Ag₂₀ and 7 mm for Ca₆₀Mg₂₀Ag₁₀Cu₁₀. The glass transition temperature (T_g), crystallization temperature (T_x), temperature interval of supercooled liquid region (ΔT_x=T_x−T_g) and melting temperature (T_m) were 401 K, 435 K, 35 K and 654 K, respectively, for the former alloy and 398 K, 428 K, 30 K and 624 K, respectively, for the latter alloy. The simultaneous addition of Ag and Cu in the Ca–Mg–(Ag, Cu) system causes a steep decrease in T_m and an increase in the reduced glass transition temperature (T_g⁄T_m), leading to an increase in the glass-forming ability.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (10), 2578-2581, 2002

  The Japan Institute of Metals and Materials

Keywords

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

Details

• CRID: 1390001204248473344
• NII Article ID: 130004451689
• NII Article ID: 10012327384
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.43.2578
• COI: 1:CAS:528:DC%2BD38XptVyks7Y%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 6341492
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6341492
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/10/43_10_2578/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed