Role of W on the dislocation evolution in Ni-W alloy during tension followed by compression loading

A large-scale molecular dynamics (MD) simulation of nano-indentation was carried out to provide insight into the influence of the Al-AlO interface on dislocation evolution and deformation behavior of Al substrate coated with AlO thin film. Adaptive common neighbor analysis (a-CNA), centro-symmetry parameter (CSP) estimation, and dislocation extraction algorithm (DXA) were implemented to represent structural evolution during nano-indentation deformation. The absence of elastic regime was observed in the P-h curve for this simulated nano-indentation test of AlO thin film coated Al specimen. The displacement of oxygen atoms from AlO to Al partly through the interface greatly influences the plastic deformation behavior of the specimen during nano-indentation. Prismatic dislocation loops, which are formed due to pinning of Shockley partials (1/6 < 112>) by Stair-rod (1/6 < 110>) and Hirth dislocation (1/3 < 001>), were observed in all cases studied in this work. Pile-up of atoms was also observed and the extent of the pile-up was found to vary with the test temperature. A distorted stacking fault tetrahedron (SFT) is formed when a nano-indentation test is carried out at 100 K. The presence of a prismatic dislocation loop, SFT and dislocation forest caused strain hardening and, consequently, there is an increase in hardness as indentation depth increases. Graphical abstract Figure illustrates nano-indentation model set up along with load vs. depth curve and distorted stacking fault tetrahedron.

show abstract

Atomistic simulation study of influence of Al2O3–Al interface on dislocation interaction and prismatic loop formation during nano-indentation on Al2O3-coated aluminum

Mishra

Meraj

Pal

2018

J Mol Model

View full text Add to dashboard Cite

show abstract

Influence of Asymmetric Cyclic Loading on Structural Evolution and Deformation Behavior of Cu-5 at.% Zr Alloy: An Atomistic Simulation-Based Study

Meraj

Dutta

Bhardwaj

et al. 2017

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Molecular Dynamics Simulation Study of Uniaxial Ratcheting Behaviors for Ultrafine-Grained Nanocrystalline Nickel

Pal

Gururaj

Meraj

et al. 2019

J. of Materi Eng and Perform

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Role of W on the dislocation evolution in Ni-W alloy during tension followed by compression loading

Cited by 11 publications

References 45 publications

Atomistic simulation study of influence of Al2O3–Al interface on dislocation interaction and prismatic loop formation during nano-indentation on Al2O3-coated aluminum

Atomistic simulation study of influence of Al2O3–Al interface on dislocation interaction and prismatic loop formation during nano-indentation on Al2O3-coated aluminum

Influence of Asymmetric Cyclic Loading on Structural Evolution and Deformation Behavior of Cu-5 at.% Zr Alloy: An Atomistic Simulation-Based Study

Molecular Dynamics Simulation Study of Uniaxial Ratcheting Behaviors for Ultrafine-Grained Nanocrystalline Nickel

Contact Info

Product

Resources

About