scholarly journals Alloying design strategy for biodegradable zinc alloys based on first-principles study of solid solution strengthening

2021 ◽  
Vol 204 ◽  
pp. 109676
Author(s):  
Chun Chen ◽  
Shihao Fan ◽  
Jialin Niu ◽  
Hua Huang ◽  
Zhaohui Jin ◽  
...  
Keyword(s):  
Solid Solution ◽  
First Principles ◽  
Design Strategy ◽  
Zinc Alloys ◽  
Solid Solution Strengthening ◽  
First Principles Study ◽  
Solution Strengthening

Deformation Mechanism of Nanocrystalline Al-Fe Alloys by Analysis from Ab-Initio Calculations

2006 ◽  
Vol 503-504 ◽  
pp. 209-214 ◽  
Author(s):  
Tokuteru Uesugi ◽  
Yorinobu Takigawa ◽  
Kenji Higashi
Keyword(s):  
Experimental Data ◽  
Solid Solution ◽  
Yield Strength ◽  
First Principles ◽  
High Strength ◽  
Misfit Strain ◽  
Solid Solution Strengthening ◽  
Solution Strengthening ◽  
Fe Alloys ◽  
Quench Method

Recently nanocrystalline Al-Fe alloys produced by a vapor quench method have been reported. These alloys are supersaturated solid solution and exhibit high strength with good ductility. It is postulated that the high strength of the Al-Fe alloys could be achieved by both the nano-grained structures and the solid solution strengthening. The contribution to the yield strength due to both the grain size strengthening and the solid solution strengthening were analyzed from the experimental data. Then the contribution to the yield strength due to the solid solution strengthening was estimated from the misfit strain calculated from the first principles in order to compare with analytical results estimated from the experimental data.

Atomistic Studies of Deformation Mechanism of Nanocrystalline Al-Ti and Al-Fe Alloys from First-Principles

2007 ◽  
Vol 561-565 ◽  
pp. 977-980 ◽  
Author(s):  
Tokuteru Uesugi ◽  
Yorinobu Takigawa ◽  
Kenji Higashi
Keyword(s):  
Solid Solution ◽  
Yield Strength ◽  
First Principles ◽  
Misfit Strain ◽  
First Principles Calculation ◽  
High Yield ◽  
Solid Solution Strengthening ◽  
Solution Strengthening ◽  
Analytical Result ◽  
Good Agreement

We investigated the contribution to the high yield strength due to the solid solution strengthening in nanocrystalline Al-Ti alloys produced by a vapor quench method. The misfit strain due to solute Ti atom in aluminum was obtained from the first principles calculation. Then, the theoretical result of the contribution to the yield strength due to the solid solution strengthening was estimated from the misfit strain using the Friedel’s theory. In dilute Al-Ti alloy, the theoretical results of the solid solution strengthening from the misfit strain was in good agreement with the analytical result using the measured grain size and yield stress.

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