Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule

Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule

High-entropy alloys (HEAs), i.e., multicomponent alloys where (typically five or more) elements are combined in equal, or roughly equal, quantities, are of great current interest, due to their formation of single, simple structured phases, and the unusual properties they can potentially exhibit. Pha...

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Main Authors: Zhaoyuan Leong, Yuhe Huang, Maximillian Bloomfield, Bethany Jim, George Kerridge, Jem Pitcairn, Michael Schobitz, Lorna Sinclair, Silvija Zilinskaite, Russell Goodall
Format: Article
Language:English
Published: MDPI AG 2020-02-01
Series:Metals
Subjects:
alloy design
high-entropy alloys (heas)
complex concentrated alloys (ccas) silicide
arc-melting
Online Access:https://www.mdpi.com/2075-4701/10/3/317
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spelling doaj-790275512ff8412f9226fd2b4ec02ee12020-11-25T02:16:10ZengMDPI AGMetals2075-47012020-02-0110331710.3390/met10030317met10030317Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s RuleZhaoyuan Leong0Yuhe Huang1Maximillian Bloomfield2Bethany Jim3George Kerridge4Jem Pitcairn5Michael Schobitz6Lorna Sinclair7Silvija Zilinskaite8Russell Goodall9Dept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKDept. Materials Science &amp; Engineering, The University of Sheffield, Sir Robert Hadfield Building, Portobello St, Sheffield S1 3JD, UKHigh-entropy alloys (HEAs), i.e., multicomponent alloys where (typically five or more) elements are combined in equal, or roughly equal, quantities, are of great current interest, due to their formation of single, simple structured phases, and the unusual properties they can potentially exhibit. Phase presence may be predicted using semi-empirical methods, but deviations from predictions may be seen during the course of alloy synthesis, with the formation of unexpected phases. The generation of such phases may be controlled with knowledge of the effective solidification temperature; in this full article, Chvorinov&#8217;s rule for solidification time is used to estimate this temperature as part of the design of a new multiphase alloy system, TiVCrZr-Si<sub>x</sub>. Further heat treatment of the TiVCrZr-Si system confirms the applicability of this approach. The new compositions demonstrate mechanical properties that suggest potential for optimization for high-temperature applications.https://www.mdpi.com/2075-4701/10/3/317alloy designhigh-entropy alloys (heas)complex concentrated alloys (ccas) silicidearc-melting
collection DOAJ
language English
format Article
sources DOAJ
author Zhaoyuan Leong
Yuhe Huang
Maximillian Bloomfield
Bethany Jim
George Kerridge
Jem Pitcairn
Michael Schobitz
Lorna Sinclair
Silvija Zilinskaite
Russell Goodall
spellingShingle Zhaoyuan Leong
Yuhe Huang
Maximillian Bloomfield
Bethany Jim
George Kerridge
Jem Pitcairn
Michael Schobitz
Lorna Sinclair
Silvija Zilinskaite
Russell Goodall
Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
Metals
alloy design
high-entropy alloys (heas)
complex concentrated alloys (ccas) silicide
arc-melting
author_facet Zhaoyuan Leong
Yuhe Huang
Maximillian Bloomfield
Bethany Jim
George Kerridge
Jem Pitcairn
Michael Schobitz
Lorna Sinclair
Silvija Zilinskaite
Russell Goodall
author_sort Zhaoyuan Leong
title Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
title_short Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
title_full Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
title_fullStr Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
title_full_unstemmed Refining As-Cast Structures of Novel Si<sub>x</sub>TiVCrZr High-Entropy Alloys Using Estimated Effective Solidification Temperature Obtained Using Chvorinov’s Rule
title_sort refining as-cast structures of novel si<sub>x</sub>tivcrzr high-entropy alloys using estimated effective solidification temperature obtained using chvorinov’s rule
publisher MDPI AG
series Metals
issn 2075-4701
publishDate 2020-02-01
description High-entropy alloys (HEAs), i.e., multicomponent alloys where (typically five or more) elements are combined in equal, or roughly equal, quantities, are of great current interest, due to their formation of single, simple structured phases, and the unusual properties they can potentially exhibit. Phase presence may be predicted using semi-empirical methods, but deviations from predictions may be seen during the course of alloy synthesis, with the formation of unexpected phases. The generation of such phases may be controlled with knowledge of the effective solidification temperature; in this full article, Chvorinov&#8217;s rule for solidification time is used to estimate this temperature as part of the design of a new multiphase alloy system, TiVCrZr-Si<sub>x</sub>. Further heat treatment of the TiVCrZr-Si system confirms the applicability of this approach. The new compositions demonstrate mechanical properties that suggest potential for optimization for high-temperature applications.
topic alloy design
high-entropy alloys (heas)
complex concentrated alloys (ccas) silicide
arc-melting
url https://www.mdpi.com/2075-4701/10/3/317
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