Exploring the Role of Thermodynamic Parameters in Determining Zr-Cu-Al-Ag Glass-Forming Composition

被引：1

作者：

Verma, Juhi ^{[1
]}

Pranav, Sai ^{[1
]}

Jain, Abhilasha ^{[1
]}

Bhatt, Jatin ^{[1
]}

机构：

[1] Visvesvaraya Natl Inst Technol, Dept Met & Mat Engn, Nagpur 440010, India

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2024年 / 55卷 / 05期

关键词：

BULK-METALLIC-GLASS; NI AMORPHOUS-ALLOYS; MECHANICAL-PROPERTIES; THERMAL-STABILITY; HIGH-ENTROPY; ABILITY; TI; SYSTEM; PREDICTION; TEMPERATURE;

D O I：

10.1007/s11661-024-07339-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new glass-forming composition (GFC) has been proposed in the Zr-Cu-Al-Ag system using thermodynamic modelling. Enthalpy of chemical mixing ( increment Hchem) and mismatch entropy ( increment S sigma/kB) is used along with configurational entropy ( increment Sc/R) to optimize the GFC. In the present work, a novel computational calculation method is introduced on behalf of a graphical approach to accurately determine GFCs using the aforementioned thermodynamic parameters. Systematically quaternary Zr-Cu-Al-Ag system is subdivided into ternary systems to determine PHS ( increment Hchem* increment S sigma/kB) and PHSS (PHS* increment Sc/R) parameters. The PHSS parameter is critically compared with reported Zr-Cu-Al-Ag BMGs. Based on the computational approach a new composition, Zr47Cu40Al8Ag5, is determined which is found to closely match with earlier reported metallic glasses. The role of varying Ag concentration from 1 to 8 at. pct has been analysed to understand the stability in GFCs. A thermodynamic analysis is also endeavoured to further explore the role of binary pairs on increment Hchem, increment S sigma/kB, increment Sc/R, PHS, and PHSS in this work.

引用

页码：1363 / 1376

页数：14

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