Journal ArticleDOI
Deformation-induced grain boundary segregation mediated high-strain rate superplasticity in medium entropy alloy
Praveen Sathiyamoorthi,Peyman Asghari-Rad,MIRI FREILICH,Nhung Thi-Cam Nguyen,Alireza Zargaran,Praveen Sathiyamoorthi,Hyoung Seop Kim +6 more
Reads0
Chats0
TLDR
In this paper, a trace of the liquid phase in Al0.3CoCrNi MPEA at the homologous temperature of 0.65 was detected and a new path to tailoring microstructure for promoting high-strain rate superplasticity in high-strength materials by grain boundary segregation engineering was proposed.About:
This article is published in Scripta Materialia.The article was published on 2022-01-15. It has received 24 citations till now. The article focuses on the topics: Superplasticity & Grain Boundary Sliding.read more
Citations
More filters
Journal ArticleDOI
A review of hot deformation behavior and constitutive models to predict flow stress of high-entropy alloys
TL;DR: In this paper , a review article summarizes the hot deformation behavior of high entropy alloys (HEAs) and the corresponding constitutive description of flow stress for grain refinement via dynamic recrystallization (DRX), reduction of casting defects, and enhancement of mechanical properties of HEAs.
Journal ArticleDOI
Molecular dynamics simulations of tensile response for FeNiCrCoCu high-entropy alloy with voids
Tinghong Gao,Han Song,Bei Wang,Yu Gao,Yutao Liu,Quan Xie,Qian Chen,Qingquan Xiao,Yongchao Liang +8 more
TL;DR: In this paper , the effects of voids on the mechanical properties of FeNiCrCoCu HEAs were investigated using molecular dynamics simulations. But the authors did not consider the effect of void defects on the deformation and plasticity of HEAs.
Journal ArticleDOI
The role of grain boundary sliding and intragranular deformation mechanisms for a steady stage of superplastic flow for Al–Mg-based alloys
TL;DR: In this article , microstructural evolution during the deformation at a temperature of 0.4 was investigated by scanning and transmission electron microscopy for Al-Mg based alloys with a different Mg content.
Journal ArticleDOI
Accelerated emergence of CoNi-based medium-entropy alloys with emphasis on their mechanical properties
TL;DR: A review of the recent progress made in the development of medium entropy alloys from a binary CoNi building block (CoNi-M, where M is Fe, Cr, or V), which are prototype systems of medium-entropy alloys is provided in this paper .
Journal ArticleDOI
Grain boundary segregation-induced strengthening-weakening transition and its ideal maximum strength in nanopolycrystalline FeNiCrCoCu high-entropy alloys
TL;DR: In this article , the influence of elemental segregation at grain boundaries (GBs) on the mechanical properties of FeNiCrCoCu high entropy alloys under uniaxial load was explored.
References
More filters
Journal ArticleDOI
Microstructures and properties of high-entropy alloys
TL;DR: The concept of high entropy introduces a new path of developing advanced materials with unique properties, which cannot be achieved by the conventional micro-alloying approach based on only one dominant element as mentioned in this paper.
Journal ArticleDOI
Tuning element distribution, structure and properties by composition in high-entropy alloys.
Qingqing Ding,Yin Zhang,Xiao Chen,Xiaoqian Fu,Dengke Chen,Sijing Chen,Lin Gu,Fei Wei,Hongbin Bei,Yanfei Gao,Yanfei Gao,Minru Wen,Jixue Li,Ze Zhang,Ting Zhu,Robert O. Ritchie,Robert O. Ritchie,Qian Yu +17 more
TL;DR: Atomic-resolution chemical mapping reveals deformation mechanisms in the CrFeCoNiPd alloy that are promoted by pronounced fluctuations in composition and an increase in stacking-fault energy, leading to higher yield strength without compromising strain hardening and tensile ductility.
Book
High-Entropy Alloys Fundamentals and Applications
TL;DR: In the last century, significant evolution and progress have led to the invention of special alloys, such as stainless steels, high speed steels and superalloys.
Book
Fundamentals of Creep in Metals and Alloys
TL;DR: In this paper, the authors describe the effect of impurities on five-power-law creep behavior in nanoscale and sub-microcrystalline materials and analyze the properties of fine-structured superplastic materials.
Journal ArticleDOI
Seventy-five years of superplasticity: historic developments and new opportunities
TL;DR: A review of the current understanding of the flow of superplastic metals and ceramics can be found in this paper, where a minor modification to the present definition of super-plasticity is proposed.