Powder metallurgy of Al<sub>0.1</sub>CoCrFeNi high-entropy alloy

Sokkalingam, R.; Tarraste, Marek; Surreddi, Kumar Babu; Mikli, Valdek; Muthupandi, V.; Sivaprasad, K.; Prashanth, Konda Gokuldoss

doi:10.1557/jmr.2020.272

Cited by 17 publications

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“…Further, the particle size distribution of the feedstock powders was analyzed by using an Analysette 22 COMPACT device (Fritsch GmbH, Idar‐Oberstein, Germany) as given in our earlier work. [ 29 ] X‐ray diffraction (XRD) patterns for the gas‐atomized powder and AM samples were measured using a Rigaku, Germany (UltimaIII) device using Cu‐Kα radiation in a 2 θ range from 30º to 100º with a scan step size of 0.05º. For microstructural observations, all the samples were polished as per the ASTM E3‐11 standard.…”

Section: Methodsmentioning

confidence: 99%

Additive Manufacturing of CoCrFeMnNi High‐Entropy Alloy/AISI 316L Stainless Steel Bimetallic Structures

et al. 2022

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The CoCrFeMnNi high-entropy alloy (HEA) is composed of five principal elements in an equal molar ratio. As the alloy was initially designed by Cantor and his group, this alloy is also named as Cantor alloy more often. [1] In contrast to the traditional alloying concept (i.e., the formation of the complex intermetallic phases and/or compounds during multi-elemental alloying), the CoCrFeMnNi-HEA exhibits a simple microstructure and crystal structure (single face-centered cubic--fcc) even with five equimolar alloying elements. Yeh et al. proposed that the simple phase stabilization in multicomponent alloys can be attributed to the higher configurational entropy in the multicomponent alloy system. [2] Further, heavy lattice distortion and sluggish diffusion effects render the multicomponent alloy superior under mechanical loading, and in corrosive and irradiated environments. [3][4][5][6] Research on the mechanical properties by Otto et al. [7] and Gludovatz et al. [8] has revealed an exceptional damage tolerance of the CoCrFeMnNi-HEA, especially at cryogenic conditions, due to continuous strain hardening by the evolution of nanotwins and nanoscale bridging during deformation. [7,9] The fatigue limit of the CoCrFeMnNi-HEA evaluated after pre-straining at room temperature (550 MPa) as well as at cryogenic temperature (470 MPa) demonstrates

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Section: Methodsmentioning

confidence: 99%