کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576790 | 1514785 | 2012 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Powder consolidation of Al-10Â wt% Fe alloy by High-Pressure Torsion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Mixtures of high-purity elemental powders of Al with an Fe content of 10Â 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 145Â nm. Supersaturation of Fe was estimated in the matrix to a maximum of â¼1Â 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 558, 15 December 2012, Pages 462-471
Journal: Materials Science and Engineering: A - Volume 558, 15 December 2012, Pages 462-471
نویسندگان
Jorge M. Cubero-Sesin, Zenji Horita,