Microstructures and mechanical properties of compositionally complex Co-free FeNiMnCr18 FCC solid solution alloy

Wu, Zhenggang; Bei, Hongbin

doi:10.1016/j.msea.2015.05.097

Cited by 114 publications

(39 citation statements)

References 60 publications

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“…In this study, structure and mechanical properties of the Fe 40 Mn 28 Ni 32-x Cr x (x=4, 12,18,24) alloys were examined. Among the examined alloys, the Fe 40 Mn 28 According to classical Labush approach [21] for concentrated solid solutions, already successfully applied to HEAs [14], the SSS caused by the atoms of i element can be described as:…”

Section: Discussionmentioning

confidence: 99%

“…For example, while the equiatomic CoCrFeNiMn alloy is solid solution [7], sigma phase was observed in the Ni 14 Fe 20 Cr 26 Co 20 Mn 20 alloy [9]. Similarly, the FeNiMnCr 18 alloy is fcc solid solution [18], while the equiatomic FeNiMnCr alloy has multi-phase structure [28] and presumably contains sigma phase. Using data of current investigation and other sources [7,18,27,28], it can be suggested that 18-20% of Cr can be dissolved in the fcc lattice of the Co-Cr-Fe-Ni-Mn system multicomponent alloys or HEAs, and when Cr concentration increases to 24-26% formation of sigma phase can be expected.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The number and concentrations A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 4 of the constitutive elements in the Fe 40 Mn 28 Ni 32-x Cr x alloys don't fit the HEAs definition, but the alloys are not based on single principal element and therefore are defined as multicomponent alloys. Co was excluded due to its high cost and potentially unfavorable effect on radiation damage performance [18]. Two main aims were pursued: (i) to experimentally establish possibility of controlling mechanical properties of single phase multicomponent alloys by appropriate alloying, (ii) to evaluate possibility of predicting SSS effect in multicomponent alloys.…”

Section: Introductionmentioning

confidence: 99%

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Tensile properties of the Cr–Fe–Ni–Mn non-equiatomic multicomponent alloys with different Cr contents

et al. 2015

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Section: Discussionmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tensile properties of the Cr–Fe–Ni–Mn non-equiatomic multicomponent alloys with different Cr contents

et al. 2015

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“…Supersaturated solid solutions produced by mechanical alloying have been studied (Rojas, 2006;Betancourt, 2012;Bera, 2012;Hamzaoui, 2014;Kubaloba, 2014;Contini, 2014;Loureiro, 2014;Barzegar, 2014;Aguilar, 2014;Kumar, 2015;Wu, 2015;Qiang, 2015;Loginov, 2015). That said, Cu and Ni have extended solid solutions; as such, part of this study had the goal of determining how much milling time was required to make the solid solution and of defining which one acts as solvent.…”

Section: Copper and Nickel Milling Mechanical Alloyingmentioning

confidence: 99%

Characterization of phase changes during fabrication of copper alloys, crystalline and non-crystalline, prepared by mechanical alloying

Rojas¹,

Martínez²,

Aguilar³

et al. 2016

ing.inv.

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The manufacture of alloys in solid state has many differences with the conventional melting (casting) process. In the case of high energy milling or mechanical alloying, phase transformations of the raw materials are promoted by a large amount of energy that is introduced by impact with the grinding medium; there is no melting, but the microstructural changes go from microstructural refinement to amorphization in solid state. This work studies the behavior of pure metals (Cu and Ni), and different binary alloys (Cu-Ni and Cu-Zr), under the same milling/mechanical alloying conditions. After high-energy milling, X ray diffraction (XRD) patterns were analyzed to determine changes in the lattice parameter and find both microstrain and crystallite sizes, which were first calculated using the Williamson-Hall (W-H) method and then compared with the transmission electron microscope (TEM) images. Calculations showed a relatively appropriate approach to observations with TEM; however, in general, TEM observations detect heterogeneities, which are not considered for the W-H method. As for results, in the set of pure metals, we show that pure nickel undergoes more microstrain deformations, and is more abrasive than copper (and copper alloys). In binary systems, there was a complete solid solution in the Cu-Ni system and a glass-forming ability for the Cu-Zr, as a function of the Zr content. Mathematical methods cannot be applied when the systems have amorphization because there are no equations representing this process during milling. A general conclusion suggests that, under the same milling conditions, results are very different due to the significant impact of the composition: nickel easily forms a solid solution, while with a higher zirconium content there is a higher degree of glassforming ability.

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“…[33] Due to the ambiguity over the role of entropy in solid solution formation, a few research groups have suggested referring the HEAs as multi-principal element alloys (MPEAs), baseless alloys, concentrated solid solution alloys (CSAs), and compositionally complex alloys (CCAs). [6,30,[34][35][36][37][38][39][40] Regardless of multiple phases or compound formation, it is worth mentioning that the significant concentration of various elements is present in the secondary phases/compounds. Besides, HEAs are established to have four inherent characteristics.…”

Section: Introductionmentioning

confidence: 99%

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

2017

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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.

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Microstructures and mechanical properties of compositionally complex Co-free FeNiMnCr18 FCC solid solution alloy

Abstract: Ϯ twin-dislocation interactions and the interactions between primary and secondary twinning systems which will result in a microstructure refinement and hence cause enhanced strain hardening and postponed necking.

Cited by 114 publications

References 60 publications

Tensile properties of the Cr–Fe–Ni–Mn non-equiatomic multicomponent alloys with different Cr contents

Tensile properties of the Cr–Fe–Ni–Mn non-equiatomic multicomponent alloys with different Cr contents

Characterization of phase changes during fabrication of copper alloys, crystalline and non-crystalline, prepared by mechanical alloying

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

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