Atomistic simulations of the local slip resistances in four refractory multi-principal element alloys

2021 ◽  
pp. 103157
Author(s):  
Rebecca A. Romero ◽  
Shuozhi Xu ◽  
Wu-Rong Jian ◽  
Irene J. Beyerlein ◽  
C.V. Ramana
Keyword(s):  
Atomistic Simulations ◽  
Principal Element ◽  
Local Slip

scholarly journals Local slip resistances in equal-molar MoNbTi multi-principal element alloy

2021 ◽  
Vol 202 ◽  
pp. 68-79 ◽  
Author(s):  
Shuozhi Xu ◽  
Yanqing Su ◽  
Wu-Rong Jian ◽  
Irene J. Beyerlein
Keyword(s):  
Principal Element ◽  
Local Slip

scholarly journals A Review of Multi-Scale Computational Modeling Tools for Predicting Structures and Properties of Multi-Principal Element Alloys

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 254 ◽  
Author(s):  
Mohsen Beyramali Kivi ◽  
Yu Hong ◽  
Mohsen Asle Zaeem
Keyword(s):  
Computational Modeling ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Atomistic Simulations ◽  
Modeling And Simulations ◽  
Principal Element ◽  
Modeling Tools ◽  
Functional Theory ◽  
Multi Scale ◽  
Structures And Properties

Multi-principal element (MPE) alloys can be designed to have outstanding properties for a variety of applications. However, because of the compositional and phase complexity of these alloys, the experimental efforts in this area have often utilized trial and error tests. Consequently, computational modeling and simulations have emerged as power tools to accelerate the study and design of MPE alloys while decreasing the experimental costs. In this article, various computational modeling tools (such as density functional theory calculations and atomistic simulations) used to study the nano/microstructures and properties (such as mechanical and magnetic properties) of MPE alloys are reviewed. The advantages and limitations of these computational tools are also discussed. This study aims to assist the researchers to identify the capabilities of the state-of-the-art computational modeling and simulations for MPE alloy research.

Contact Analysis of Tire Tread Rubber on Flat Surface with Microscopic Roughness3

2006 ◽  
Vol 34 (4) ◽  
pp. 237-255 ◽  
Author(s):  
M. Kuwajima ◽  
M. Koishi ◽  
J. Sugimura
Keyword(s):  
Surface Roughness ◽  
Finite Element ◽  
Sliding Friction ◽  
Tangential Force ◽  
Partial Slip ◽  
Real Contact Area ◽  
Element Analysis ◽  
Real Contact ◽  
Local Slip ◽  
Tread Rubber

Abstract This paper describes experimental and analytical studies of the dependence of tire friction on the surface roughness of pavement. Abrasive papers were adopted as representative of the microscopic surface roughness of pavement surfaces. The rolling∕sliding friction of tire tread rubber against these abrasive papers were measured at low slip velocities. Experimental results indicated that rolling∕sliding frictional characteristics depended on the surface roughness. In order to examine the interfacial phenomena between rubber and the abrasive papers, real contact length, partial slip, and apparent friction coefficient under vertical load and tangential force were analyzed with two-dimensional explicit finite element analysis in which slip-velocity-dependent frictional coefficients were considered. Finite element method results indicated that the sum of real contact area and local partial slip were larger for finer surfaces under the same normal and tangential forces. In addition, the velocity-dependent friction enhanced local slip, where the dependence of local slip on surface roughness was pronounced. It proved that rolling∕sliding friction at low slip ratio was affected by local frictional behavior at microslip regions at asperity contacts.

scholarly journals Thermal stability of a nanocrystalline HfNbTiZr multi-principal element alloy processed by high-pressure torsion

2020 ◽  
Vol 168 ◽  
pp. 110550 ◽  
Author(s):  
Pham Tran Hung ◽  
Megumi Kawasaki ◽  
Jae-Kyung Han ◽  
János L. Lábár ◽  
Jenő Gubicza
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Principal Element ◽  
Thermal Stability Of
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