Effect of Precipitates on Plastic Deformation Behavior of High Entropy Alloy Al0.3CoCrFeNi Under High Strain Rate Loading

IF 1.5 4区 材料科学 Q3 ENGINEERING, MECHANICAL
P. Das, Vishal Kumar, Prasenjit Khanikar
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引用次数: 1

Abstract

High entropy alloys (HEAs) are primarily known for their high strength and high thermal stability. These alloys have recently been studied for high strain rate applications as well. HEAs have been observed to exhibit different properties when subjected to different strain rates. Very few published results on HEAs are available for high strain rate loading conditions. In addition, modeling and simulation work of microstructural details, such as grain boundary and precipitates of HEAs have not yet been investigated. However, at an atomistic length scale, molecular dynamics simulation works of HEAs have already been published. In this study, a detailed microstructural analysis of plastic deformation of the material under high strain rate loading has been performed using dislocation density based crystal plasticity finite element modeling. The primary objective is, therefore, to assess the strengthening effects due to precipitates on a particular high entropy alloy Al0.3CoCrFeNi with ultrafine grains having randomly distributed NiAl precipitates.
析出相对高熵合金Al0.3CoCrFeNi高应变率加载塑性变形行为的影响
高熵合金(HEAs)主要以其高强度和高热稳定性而闻名。这些合金最近也被研究用于高应变速率的应用。HEAs在不同的应变速率下表现出不同的性能。很少有关于HEAs的公开结果可用于高应变率加载条件。此外,HEAs的晶界和析出相等微观组织细节的建模和模拟工作尚未深入研究。然而,在原子长度尺度上,HEAs的分子动力学模拟工作已经发表。在本研究中,使用基于位错密度的晶体塑性有限元模型对材料在高应变率载荷下的塑性变形进行了详细的微观结构分析。因此,本研究的主要目的是评估一种具有随机分布NiAl析出的超细晶粒的高熵合金Al0.3CoCrFeNi的强化效果。
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来源期刊
CiteScore
3.00
自引率
0.00%
发文量
30
审稿时长
4.5 months
期刊介绍: Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships
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