Spinodal Decomposition in Fe-Cr Alloys

Orlando Soriano Vargas; Erika O. Avila-Davila; V.M. Victoria-Hernández; M.L. Saucedo-Muñoz

doi:10.4028/www.scientific.net/SSP.172-174.443

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HomeSolid State PhenomenaSolid State Phenomena Vols. 172-174Spinodal Decomposition in Fe-Cr Alloys

Spinodal Decomposition in Fe-Cr Alloys

Abstract:

The hardening behavior of precipitation was studied during aging of Fe-Cr alloys. This mechanical behavior is associated with the nanometric modulation structure of the coherent decomposed Fe-rich and Cr-rich phases formed by the spinodal decomposition of the supersaturated solid solution. The growth kinetics of spinodal decomposition was very slow and it increased during coarsening stage. The morphology of decomposed phases consisted of an interconnected irregular shape with no preferential alignment for short aging times and a further aging caused the change to a plate shape of the decomposed Cr-rich phase aligned in the <110> directions of the Fe-rich matrix. The rapid increase in hardness and embrittlement seem to be associated with the coherency and nanometer size of the spinodally-decomposed phases in the aged alloys.

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Periodical:

Solid State Phenomena (Volumes 172-174)

Pages:

443-448

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.443

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Online since:

June 2011

Authors:

Orlando Soriano Vargas, Erika O. Avila-Davila, V.M. Victoria-Hernández, M.L. Saucedo-Muñoz

Keywords:

Fe-Cr Alloys, Growth Kinetics, Microstructural Evolution, Spinodal Decomposition

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