Deformation behavior in La-4Al-4N-4 metallic glass

Y. Kawamura, T. Nakamura, A. Inoue

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigated the deformation behavior of the supercooled liquid in a La55Al2jNia)(at.%) metallic glass ribbon that has a wide supercooled liquid region of 65 K before crystallization. The deformation of the metallic glass was divided into three types, namely, homogeneous deformations with and without a stress overshoot and an inhomogeneous deformation. The supercooled liquid above the glass transition temperature (?,) exhibited a Newtonian viscosity and superplastic-lflce behavior during isothermal tensile deformation. The metallic glass was elongated as much as 1000 % at high strain rates ranging from 102 s'1 to 10° s~l without embrittlement. The maximum elongation to failure was in excess of 1800 % at a strain rate of 1.7x10 s'1 and at 503 K (J,+20 K, 0.7irj under about 40 MPa. 1999 Materials Research Society.

Original languageEnglish
Pages (from-to)373-378
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume554
Publication statusPublished - 1999 Dec 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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