Refractory High Entropy Alloys for High Temperature Structural Applications

Abstract

A methodology is developed for alloy selection based on rule-of-mixtures (ROM) combined with the CALculation of PHAse Diagram (CALPHAD) technique. All equiatomic quaternary and quinary equiatomic alloys based on Group-IV (Ti, Zr, Hf), Group-V (V, Nb, Ta), and Group-VI (Cr, Mo, W) are studied on density (), Youngs modulus (E), specific heat at 1273K at constant pressure (Cp), liquidus temperature, valence electron concentration (VEC), and atomic size difference/radius mismatch (). Correlations between all the above six different parameters are studied using scatter matrix plot. The Scatter matrix plot approach gives a snapshot of all the properties of 126 quaternary and 126 quinary alloys. It helps in narrowing down the required alloy families based on design and application requirements.

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Document Details

Document Type
Technical Report
Publication Date
May 09, 2022
Accession Number
AD1170060

Entities

People

  • Srinivasa Budaraju

Organizations

  • Indian Institute of Technology Madras

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Crystal Structure
  • Grain Size
  • Hardness
  • Heat Treatment
  • High Temperature
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Melting Point
  • Metallurgy
  • Modulus Of Elasticity
  • Phase Diagrams
  • Powder Metallurgy
  • Powders
  • Solid Solutions
  • Thermal Stability
  • Transition Temperature
  • Yield Strength

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.
  • Reinforced Composite Materials

Technology Areas

  • Microelectronics