Heat treatment impacts the micro-structure and mechanical properties of AlCoCrFeNi high entropy alloy

Munitz, A.; Salhov, S.; Hayun, Shmuel; Frage, N.

doi:10.1016/j.jallcom.2016.05.034

Cited by 278 publications

(131 citation statements)

References 49 publications

Supporting

Mentioning

115

Contrasting

Unclassified

Order By: Relevance

“…The microstructural evolution after heat treatment of as-cast alloy at 900 and 1100 C are shown in Figure 4. Munitz et al [147] investigated the effect of heat treatment impact on the microstructure and mechanical properties of AlCrFeCoNi HEA. The alloy consisted of BCC and B2 phase in the as-cast condition.…”

Section: Microstructural Evolution After Heat Treatmentmentioning

confidence: 99%

High‐Entropy Alloys: Potential Candidates for High‐Temperature Applications – An Overview

2017

View full text Add to dashboard Cite

Multi-principal elemental alloys, commonly referred to as high-entropy alloys (HEAs), are a new class of emerging advanced materials with novel alloy design concept. Unlike the design of conventional alloys, which is based on one or at most two principal elements, the design of HEA is based on multi-principal elements in equal or near-equal atomic ratio. The advent of HEA has revived the alloy design perception and paved the way to produce an ample number of compositions with different combinations of promising properties for a variety of structural applications. Among the properties possessed by HEAs, sluggish diffusion and strength retention at elevated temperature have caught wide attention. The need to develop new materials for high-temperature applications with superior high-temperature properties over superalloys has been one of the prime concerns of the high-temperature materials research community. The current article shows that HEAs have the potential to replace Ni-base superalloys as the next generation hightemperature materials. This review focuses on the phase stability, microstructural stability, and high-temperature mechanical properties of HEAs. This article will be highly beneficial for materials science and engineering community whose interest is in the development and understanding of HEAs for high-temperature applications.

show abstract

Section: Microstructural Evolution After Heat Treatmentmentioning

confidence: 99%

High‐Entropy Alloys: Potential Candidates for High‐Temperature Applications – An Overview

2017

View full text Add to dashboard Cite

show abstract

“…To commercialize HEAs, more research on their manufacturing processes is required. Previous studies have focused on HEAs made using small-scale casting methods, such as arc melting [5,6]. One challenge that needs to be addressed in HEA research is their mass-scale production.…”

Section: Introductionmentioning

confidence: 99%

Compositional Approach to Designing Fcc High-Entropy Alloys that Have an Enlarged Equiaxed Zone

Kang

Won

Kwon

et al. 2018

Metals

View full text Add to dashboard Cite

Abstract:A compositional approach to designing alloys that have an enlarged equiaxed zone is suggested in this study. The partitioning of elements during the solidification of CoCrFeMnNi high-entropy alloy (HEA) was confirmed through a directional solidification quenching experiment. Several HEAs were designed to maximize the effects of constitutional and thermal undercooling by considering factors including solute enrichment at the columnar front and the melting temperatures and thermal conductivities of the individual elements. The newly designed HEAs were shown to have successfully enlarged equiaxed zones, and improved anisotropic properties.

show abstract

“…This particular alloy system is ideal for a fundamental oxidation study since it contains both Al and Cr, which are known to produce protective Cr 2 O 3 and/or Al 2 O 3 scales [30]. Additionally, the AlCoCrFeNi system is one of the most thoroughly investigated to date [1,4,10,14,[31][32][33][34][35][36][37][38][39][40][41][42][43]. This paper will systematically report the influence of annealing on the microstructures and active oxidation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Influence of Annealing on the Microstructures and Oxidation Behaviors of Al8(CoCrFeNi)92, Al15(CoCrFeNi)85, and Al30(CoCrFeNi)70 High-Entropy Alloys

Butler

Weaver

2016

Metals

View full text Add to dashboard Cite

Abstract:The understanding of the oxidation behaviors of as-cast and annealed high-entropy alloys (HEAs) is currently limited. This work systematically investigates the influence of annealing on the microstructures and oxidation behaviors of AlCoCrFeNi-based HEAs. Annealing was found to alter the distribution of Al-rich phases which caused a change in the oxidation mechanisms. In general, all three of the investigated HEAs displayed some degree of transient oxidation at 1050 • C that was later followed by protective, parabolic oxide growth. The respective oxidation behaviors are discussed relative to existing oxide formation models for Ni-Cr-Al alloys.

show abstract

Heat treatment impacts the micro-structure and mechanical properties of AlCoCrFeNi high entropy alloy

Cited by 278 publications

References 49 publications

High‐Entropy Alloys: Potential Candidates for High‐Temperature Applications – An Overview

High‐Entropy Alloys: Potential Candidates for High‐Temperature Applications – An Overview

Compositional Approach to Designing Fcc High-Entropy Alloys that Have an Enlarged Equiaxed Zone

Influence of Annealing on the Microstructures and Oxidation Behaviors of Al8(CoCrFeNi)92, Al15(CoCrFeNi)85, and Al30(CoCrFeNi)70 High-Entropy Alloys

Contact Info

Product

Resources

About