Estimation of grain boundary segregation enthalpy and its role in stable nanocrystalline alloy design
By H. Murdoch, C. A. Schuh. 2013
233 citations recorded by the source corpus.
Grain boundary segregation provides a method for stabilization of nanocrystalline metals—an alloying element that will segregate to the boundaries can lower the grain boundary energy, attenuating the driving force for grain growth. The segregation strength relative to the mixing enthalpy of a binary system determines the propensity for segregation stabilization. This relationship has been codified for the design space of positive enthalpy alloys; unfortunately, quantitative values for the grain boundary segregation enthalpy exist in only very few material systems, hampering the prospect of nanocrystalline alloy design. Here we present a Miedema-type model for estimation of grain boundary segregation enthalpy, with which potential nanocrystalline phase-forming alloys can be rapidly screened. Calculations of the necessary enthalpies are made for ∼2500 alloys and used to make predictions about nanocrystalline stability.
Subfields: Biomedical Engineering, Materials Chemistry, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/b4f4e3ea07373fa441fa0d806ca2c9cc39dea85e
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomedical Engineering
In Materials Chemistry
- Kai Nordlund
- S. Zinkle
- F. Banhart
- Lorenzo Malerba
- Roger E. Stoller
- William J. Weber
- F. Willaime
- A. Krasheninnikov
In Mechanical Engineering
Citations in the corpus
- Segregation-induced changes in grain boundary cohesion and embrittlement in binary alloys (2015, unknown): “Such a formulation is analogous to that used in several previous treatments of nanocrystalline stability [39-44], but has not previously been used to examine free surface effects or embrittlement.”
- Primary radiation damage: A review of current understanding and models (2018, background): “The strengthening is likely related to grain boundary segregation, which is known to strengthen metals under some conditions [229,230].”