کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1584253 | 1514898 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural characterization of dispersion-strengthened Cu-Ti-Al alloys obtained by reaction milling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Microstructural characterization of dispersion-strengthened Cu-Ti-Al alloys obtained by reaction milling Microstructural characterization of dispersion-strengthened Cu-Ti-Al alloys obtained by reaction milling](/preview/png/1584253.png)
چکیده انگلیسی
The microstructure, electrical conductivity and hot softening resistance of two alloys (G-10 and H-20), projected to attain Cu-2.5Â vol.% TiC-2.5Â vol.% Al2O3 nominal composition, and prepared by reaction milling and hot extrusion, were studied. The alloys were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and several chemical analysis techniques. The first alloy, G-10, showed the formation of Al2O3 nanodispersoids and the presence of particles from non-reacted raw materials (graphite, Ti and Al). A second alloy, H-20, was prepared employing different fabrication conditions. This alloy exhibited a homogeneous distribution of Al2O3 and Ti-Al-Fe nanoparticles, with the microstructure being stable after annealing and hot compression tests. These nanoparticles acted as effective pinning sites for dislocation slip and grain growth. The room-temperature hardness of the H-20 consolidated material (330 HV) was approximately maintained after annealing for 1Â h at 1173Â K; the electrical conductivity was 60% IACS (International Annealing Copper Standard).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 454â455, 25 April 2007, Pages 183-193
Journal: Materials Science and Engineering: A - Volumes 454â455, 25 April 2007, Pages 183-193
نویسندگان
Rodrigo A. Espinoza, Rodrigo H. Palma, Aquiles O. Sepúlveda, VÃctor Fuenzalida, Guillermo Solórzano, Aldo Craievich, David J. Smith, Takeshi Fujita, Marta López,