Grain boundary segregation in immiscible nanocrystalline alloys
TLDR
Based on a diffuse interface model, this paper examined grain growth dynamics in immiscible nanocrystalline (NC) alloys, where both grain boundary (GB) solute segregation and bulk phase separation act in conjunction.About:
This article is published in Acta Materialia.The article was published on 2017-03-01 and is currently open access. It has received 82 citations till now. The article focuses on the topics: Grain boundary & Grain growth.read more
Citations
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Materials selection rules for amorphous complexion formation in binary metallic alloys
TL;DR: In this article, a set of materials selection rules aimed at predicting the formation of amorphous complexions, with an emphasis on encouraging the segregation of dopants to the interfaces and lowering the formation energy for a glassy structure.
Journal ArticleDOI
Grain boundary segregation and intermetallic precipitation in coarsening resistant nanocrystalline aluminum alloys
Arun Devaraj,W. Wang,R.S. Vemuri,Libor Kovarik,Xiujuan Jiang,Mark E. Bowden,Jason R. Trelewicz,Suveen N. Mathaudhu,Suveen N. Mathaudhu,Aashish Rohatgi +9 more
TL;DR: In this article, a coupled Monte Carlo-molecular dynamics simulation-guided experimental approach of improving the resistance to thermally induced grain coarsening in light-weight nanocrystalline Al-Mg alloys is presented.
Journal ArticleDOI
Achieving Ultralow Wear with Stable Nanocrystalline Metals.
John F. Curry,Tomas F. Babuska,Timothy A. Furnish,Ping Lu,David P. Adams,Andrew B. Kustas,Brendan L Nation,Michael T. Dugger,Michael Chandross,Blythe Clark,Brad L. Boyce,Christopher A. Schuh,Nicolas Argibay +12 more
TL;DR: Pt-Au, a proposed stable alloy consisting of two noble metals, is shown to exhibit extraordinary resistance to wear and is the first instance of an all-metallic material exhibiting a specific wear rate on the order of 10-9 mm3 N-1 m-1, comparable to diamond-like carbon and sapphire.
Journal ArticleDOI
Grain boundary phase transformations in PtAu and relevance to thermal stabilization of bulk nanocrystalline metals
TL;DR: In this article, a realistic nanocrystalline microstructure with experimentally relevant global solute concentrations is employed to illustrate inhomogeneous boundary segregation, and the existence of a phase transformation between low and high solute content grain boundaries is predicted.
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Solute interaction effects on grain boundary segregation in ternary alloys
TL;DR: Using a lattice-model framework and Monte Carlo simulations, this paper developed a first-order theoretical framework with which the GB segregation behavior in ternary alloys can be estimated based on the thermodynamic properties of the constituent binary systems and experimentally studied GB segregation in the Pt-Au-Pd system as a case study.
References
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Journal ArticleDOI
Free Energy of a Nonuniform System. I. Interfacial Free Energy
John W. Cahn,John E. Hilliard +1 more
TL;DR: In this article, it was shown that the thickness of the interface increases with increasing temperature and becomes infinite at the critical temperature Tc, and that at a temperature T just below Tc the interfacial free energy σ is proportional to (T c −T) 3 2.
Book
Phase transformations in metals and alloys
TL;DR: In this article, the authors discuss the properties of phase diagrams for single-component systems, including the influence of interfaces on the equilibrium of binary solutions in Heterogeneous Systems (Heterogeneous Binary Phase Diagrams).
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Mechanical properties of nanocrystalline materials
TL;DR: The mechanical properties of nanocrystalline materials are reviewed in this paper, with emphasis on their constitutive response and on the fundamental physical mechanisms, including the deviation from the Hall-Petch slope and possible negative slope, the effect of porosity, the difference between tensile and compressive strength, the limited ductility, the tendency for shear localization, fatigue and creep responses.
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Nanoalloys: From Theory to Applications of Alloy Clusters and Nanoparticles
TL;DR: Nanoalloys of Group 11 (Cu, Ag, Au) 865 5.1.5.2.