Calculations of Crystallization Temperature of Multicomponent Metallic Glasses

• Takeuchi Akira

  Institute for Materials Research, Tohoku University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

Abstract

A model for calculating crystallization temperature (T_x) of multicomponent metallic glasses is proposed by modifying the Miedema’s model which is used for calculating T_x of binary systems. The calculations were carried out for nearly 900 metallic glasses including 470 binary and 398 ternary alloys. In the present model, the cavity formation energy (ΔH_cavity^for) for multicomponent metallic glasses was theoretically derived on the basis of the Miedema’s model. The equation for expressing the relation between experimental T_x and theoretical ΔH_cavity^for was statistically analyzed by the least-squares method, yielding T_x=4.16×ΔH_cavity^for+318. The binary and ternary systems tend to show different equations between T_x and ΔH_cavity^for. The inherent equation in each system was analyzed as simultaneous achievement of the increase in stability of metallic glasses and decrease in ΔH_cavity^for due to multicomponent alloying. Furthermore, the glass-forming ability was predicted by reduced crystallization temperature instead of reduced glass transition temperature. As a result, it was found that reduced crystallization temperature can be calculated close to reduced glass transition temperature except for Pt-, Pd- and La-based systems. It is of great importance that T_x can be calculated for multicomponent metallic glasses by semi-empirical method.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 43 (9), 2275-2284, 2002

  The Japan Institute of Metals and Materials

Keywords

• crystallization temperature
• metallic glass
• multicomponent system
• cavity formation enthalpy
• glass-forming ability
• reduced glass transition temperature
• reduced crystallization temperature

Details

• CRID: 1390282679223720320
• NII Article ID: 10012326198
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.43.2275
• COI: 1:CAS:528:DC%2BD38XnvFGqsb0%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 6313274
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6313274
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/43/9/43_9_2275/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed