Strength–Ductility Synergy in High Entropy Alloys by Tuning the Thermo-Mechanical Process Parameters: A Comprehensive Review

Abstract

IntroductionHigh Entropy Alloys (HEA) are the class of alloys having minimum of five principal elements with a concentration of constituent elements between 5 and 35 at% [1][2][3][4] . The microstructure, properties, and performance of HEA are driven by four core effects, i.e., high configurational entropy 1,5 , lattice distortion 3 , sluggish diffusion 6 , and cocktail effect 7 . Owing to these effects, HEA exhibit excellent tensile ductility, fracture toughness, corrosion resistance, and many other important properties of relevance [8][9][10][11][12][13] . The combination of desirable property attributes in HEAs makes these materials a perfect candidate for numerous applications, like in gas storage, in ion irradiation plants, and for biomedical implants [13][14][15] . The lower yield

Data-driven analysis and prediction of stable phases for high-entropy alloy design

“…Following meticulous data cleaning, we obtained a comprehensive dataset comprising 5,692 records with 50 different elements. The significance of single, dual, or triple-phase HEAs, particularly those with IM or AM phases, has garnered increasing attention in recent studies due to their specific applications 27 , 37 , 67 , 68 , 72 , 73 . Despite this significance, no ML model or dataset has adequately addressed the classification of them in the context of HEAs thus far.…”

“…Furthermore, efforts are underway to develop HEAs with fewer elements, aiming to optimize their properties 26 . In addition, innovative microstructures are being designed, incorporating multiple phases to precisely tailor the characteristics of HEAs for targeted applications 27 , 28 . The increasing interest in the field of HEAs is driven by the increasing demand for materials in the emerging clean energy domain and opportunities to extend the lifetime of alloys in extreme or harsh environments.…”

“…HEAs with IM phases have high thermal stability, strength and ductility especially when combined with SS 37 , 67 , 68 . Achieving the desired strength and toughness relies on effectively balancing the combination of ductile and brittle phases 27 . Meanwhile, the inclusion of AM phases in HEAs facilitates the development of materials with notable characteristics such as large elastic strain, enhanced corrosion resistance, and improved wear resistance 69 .…”

Modeling and analysis of process parameters in EDM of Ni35Ti35Zr15Cu10Sn5 high-temperature high entropy shape memory alloy by RSM Approach

“…They've been the subject of much research lately due to their unique and appealing characteristics [4]. High Entropy Alloys (HEAs) are alloys with a minimum of five primary elements and a constituent element concentration ranging from 5 to 35 at% [5]. Despite having many alloying elements, HEAs can form a single solid solution phase [6].…”

Control of the Microstructure in a Al5Co15Cr30Fe25Ni25 High Entropy Alloy through Thermo-Mechanical and Thermal Treatments

“…Extensive work regarding the influence of thermo-mechanical processing and thermal treatments in these multiphase fcc-based HEAs is currently in progress as a way for maximizing their strengths [6][7][8][9][10][11][12]. On the contrary, less attention has been dedicated to thermomechanical processing of fcc-based single-phase HEAs because their mechanical properties are lower than those of multiphase fcc-based HEAs.…”