ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Dependence of shear yield strain and shear transformation zone on the glass transition temperature in thin film metallic glasses

Qian, X and Cao, QP and Liu, SY and Wang, C and Wang, XD and Zhang, DX and Ramamurty, U and Jiang, JZ (2015) Dependence of shear yield strain and shear transformation zone on the glass transition temperature in thin film metallic glasses. In: JOURNAL OF ALLOYS AND COMPOUNDS, 652 . pp. 191-199.

[img] PDF
Jou_of_All_and_Com_652_191_2015.pdf - Published Version
Restricted to Registered users only

Download (2MB) | Request a copy
Official URL: http://dx.doi.org/10.1016/j.jallcom.2015.08.217

Abstract

The dependence of shear yield strain, the activation energy and volume of shear transformation zone on the glass transition temperature was investigated through the analysis of statistical distributions of the first pop-in events during spherical indentation of four different thin film metallic glasses. Only the Cu-Zr metallic glass exhibits a bimodal distribution of the first pop-in loads, whereas W-Ru-B, Zr-Cu-Ni-Al and La-Co-Al metallic glasses show an unimodal distribution. Results show that shear yield strain and activation energy of shear transformation zone decrease whereas the volume of shear transformation zone increases with increasing homologous temperature, indicating that it is the activation energy rather than the volume of shear transformation zone that controls shear yield strain. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Publication: JOURNAL OF ALLOYS AND COMPOUNDS
Publisher: ELSEVIER SCIENCE SA
Additional Information: Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Keywords: Thin film metallic glasses; Magnetron sputtering; Nanoindentation; Shear yield strain; Shear transformation zone
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 31 Oct 2015 05:51
Last Modified: 31 Oct 2015 05:51
URI: http://eprints.iisc.ac.in/id/eprint/52626

Actions (login required)

View Item View Item