TY - JOUR
T1 - Powder consolidation of Al-10wt% Fe alloy by High-Pressure Torsion
AU - Cubero-Sesin, Jorge M.
AU - Horita, Zenji
N1 - Funding Information:
This study was carried out as a part of the program in Japan Aluminum Association. One of the authors (JC) thanks the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan for a Ph.D. scholarship. This work was supported in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan in the Innovative Area “Bulk Nanostructured Metals”, and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P).
PY - 2012/12/15
Y1 - 2012/12/15
N2 - Mixtures of high-purity elemental powders of Al with an Fe content of 10. wt% were consolidated at room temperature by means of High-Pressure Torsion (HPT) and subsequently deformed to high levels of strain. Relative density of the consolidated disks was >99% even at low strains. The microstructure observation by transmission electron microscopy revealed that the alloy consisted of an ultrafine grained Al matrix with an average grain size of 145. nm. Supersaturation of Fe was estimated in the matrix to a maximum of ~1. wt% Fe by X-ray diffraction. The dispersion of secondary Fe-rich particles was quantified by scanning electron microscopy and image processing techniques. Hardness and tensile strength were improved significantly with straining by HPT, in direct correlation with grain refinement and potentiated by dissolution of Fe particles in the matrix. Excellent compromise of strength and ductility was achieved at intermediate levels of imposed strain.
AB - Mixtures of high-purity elemental powders of Al with an Fe content of 10. wt% were consolidated at room temperature by means of High-Pressure Torsion (HPT) and subsequently deformed to high levels of strain. Relative density of the consolidated disks was >99% even at low strains. The microstructure observation by transmission electron microscopy revealed that the alloy consisted of an ultrafine grained Al matrix with an average grain size of 145. nm. Supersaturation of Fe was estimated in the matrix to a maximum of ~1. wt% Fe by X-ray diffraction. The dispersion of secondary Fe-rich particles was quantified by scanning electron microscopy and image processing techniques. Hardness and tensile strength were improved significantly with straining by HPT, in direct correlation with grain refinement and potentiated by dissolution of Fe particles in the matrix. Excellent compromise of strength and ductility was achieved at intermediate levels of imposed strain.
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U2 - 10.1016/j.msea.2012.08.029
DO - 10.1016/j.msea.2012.08.029
M3 - Article
AN - SCOPUS:84866278192
SN - 0921-5093
VL - 558
SP - 462
EP - 471
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -