scholarly journals Solubility of Carbon in Nanocrystalline α-Iron

2013 ◽  
Vol 1526 ◽  
Author(s):  
Alexander Kirchner ◽  
Konrad Eymann ◽  
Peter Quadbeck ◽  
Alexander Strauß ◽  
Bernd Kieback
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Grain Boundaries ◽  
Iron Powder ◽  
Thermodynamic Model ◽  
Nanocrystalline Alloys ◽  
Experimental Setup ◽  
Grain Size Effect ◽  
Carbon Solubility ◽  
Nanocrystalline Iron

ABSTRACTBy using a thermodynamic model of nanocrystalline alloys the grain size effect on the solubility of carbon in α-iron is calculated. More specifically the enrichment at grain boundaries is predicted to result in a solubility enhancement. An experimental setup is devised to measure carbon solubility in nanocrystalline iron powder in equilibrium with graphite. At 390 °C a solubility of 0.514 at% is determined for nanocrystalline iron with a grain size of 23 nm.

scholarly journals Solubility of Carbon in Nanocrystalline -Iron

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Alexander Kirchner ◽  
Bernd Kieback
Keyword(s):  
Grain Size ◽  
Grain Boundary ◽  
Size Effect ◽  
Thermodynamic Model ◽  
Solid Solubility ◽  
Local Variation ◽  
Carbon Solubility ◽  
Nonlinear Relation ◽  
Nanocrystalline Iron ◽  
Equilibrium Solid Solubility

A thermodynamic model for nanocrystalline interstitial alloys is presented. The equilibrium solid solubility of carbon in -iron is calculated for given grain size. Inside the strained nanograins local variation of the carbon content is predicted. Due to the nonlinear relation between strain and solubility, the averaged solubility in the grain interior increases with decreasing grain size. The majority of the global solubility enhancement is due to grain boundary enrichment however. Therefore the size effect on carbon solubility in nanocrystalline -iron scales with the inverse grain size.

Landau-Ginzburg-Devonshire Theory of the Grain Size Effect on the Ferroelectricity in BaTiO 3 Nanoceramics

2020 ◽  
Author(s):  
Kum-Ok Jang ◽  
Il-Hwan Kim ◽  
Il-Hun Kim ◽  
Kye-Ryong Sin ◽  
Chol-Jin Kim
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Grain Size Effect

scholarly journals Finite element analysis of the grain size effect on diffusion in polycrystalline materials

2014 ◽  
Vol 95 ◽  
pp. 187-191 ◽  
Author(s):  
V. Lacaille ◽  
C. Morel ◽  
E. Feulvarch ◽  
G. Kermouche ◽  
J.-M. Bergheau
Keyword(s):  
Finite Element Analysis ◽  
Grain Size ◽  
Finite Element ◽  
Size Effect ◽  
Polycrystalline Materials ◽  
Grain Size Effect ◽  
Element Analysis

scholarly journals Grain size effect on radiation tolerance of nanocrystalline Mo

2016 ◽  
Vol 123 ◽  
pp. 90-94 ◽  
Author(s):  
G.M. Cheng ◽  
W.Z. Xu ◽  
Y.Q. Wang ◽  
A. Misra ◽  
Y.T. Zhu
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Radiation Tolerance ◽  
Grain Size Effect

Grain size effect on the dielectric and non-ohmic properties of CaCu3Ti4O12 ceramics prepared by the sol-gel process

2019 ◽  
Vol 778 ◽  
pp. 625-632 ◽  
Author(s):  
Pu Mao ◽  
Jiping Wang ◽  
Shujuan Liu ◽  
Lixue Zhang ◽  
Yingying Zhao ◽  
...  
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Sol Gel ◽  
Grain Size Effect ◽  
Sol Gel Process
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