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A study of densification and phase transformations of nanocomposite Cu-Fe prepared by mechanical alloying and consolidation process

The purpose of this study is an attempt to obtain nanocrystalline bulk Cu-40 at.% Fe alloy by mechanical alloying followed by consolidation process under 7 GPa and annealing. The transformations occurring in the material were studied by the use of X-ray diffraction. The structural investigations revealed that consolidation enabled supersaturated Cu(Fe) to precipitate out Cu4Fe and CuFe4 intermetallics. A limited grain growth was noticed after annealing. The results of microhardness have shown that the hardening increases similarly up to 40 h milling. The variation of microhardness as a function of the reciprocal square root of the grain size demonstrates that the rate of hardening is similar to that predicted by the Hall-Petch behavior

This study was supported by financial funds from the MAT2013-47231-C2-2-P project

Springer Verlag

Manager: Ministerio de Economía y Competitividad (Espanya)
Author: Azabou, M.
Makhlouf, T.
Khitouni, M.
Saurina i Canals, Joan
Escoda i Acero, Ma. Lluïsa
Suñol Martínez, Joan Josep
Abstract: The purpose of this study is an attempt to obtain nanocrystalline bulk Cu-40 at.% Fe alloy by mechanical alloying followed by consolidation process under 7 GPa and annealing. The transformations occurring in the material were studied by the use of X-ray diffraction. The structural investigations revealed that consolidation enabled supersaturated Cu(Fe) to precipitate out Cu4Fe and CuFe4 intermetallics. A limited grain growth was noticed after annealing. The results of microhardness have shown that the hardening increases similarly up to 40 h milling. The variation of microhardness as a function of the reciprocal square root of the grain size demonstrates that the rate of hardening is similar to that predicted by the Hall-Petch behavior
This study was supported by financial funds from the MAT2013-47231-C2-2-P project
Document access: http://hdl.handle.net/2072/299160
Language: eng
Publisher: Springer Verlag
Rights: Tots els drets reservats
Subject: Aliatges
Alloys
Raigs X -- Difracció
X-rays -- Diffraction
Ferro -- Aliatges
Iron alloys
Title: A study of densification and phase transformations of nanocomposite Cu-Fe prepared by mechanical alloying and consolidation process
Type: info:eu-repo/semantics/article
Repository: Recercat

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