Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52948#.VK3gk8nQrzE Author(s)    Pilar Orozco-González 1* , Manuel Castro-Román 2 , Simitrio Maldonado-Ruíz 1 , Sergio Haro-Rodríguez 1 , Fabián Equihua-Guillén 3 , Rodrigo Muñiz-Valdez 3 , Salvador Luna-Álvarez 3 , Miguel Montoya-Dávila 1 , Alejandra Hernández-Rodríguez 2   Affiliation(s) 1 Academic Unit of Engineering, Autonomous University of Zacatecas, Zacatecas, México . 2 CINVESTAV Saltillo, Saltillo, México . 3 Faculty of Engineering, Autonomous University of Coahuila, México . ABSTRACT Nucleation of Fe-rich intermetallic phases on α-Al 2 O 3 oxide films were analyzed in five experimental Al-Fe-Mn-Si alloys. In an attempt to verify the role of α-Al 2 O 3 films in nucleating Fe-rich intermetallics, experiments have been conducted under conditions where formed in situ oxide films were present. Some Fe-rich intermetallics are observed to be related...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=48169#.VEXH-FfHRK0 Author(s)   Inampudi Narasimha Murthy , Nallabelli Arun Babu , Jinugu Babu Rao Affiliation(s) Department of Metallurgical Engineering, Andhra University, Visakhapatnam, India . Department of Metallurgical Engineering, Andhra University, Visakhapatnam, India . Department of Metallurgical Engineering, Andhra University, Visakhapatnam, India . ABSTRACT Composites are most promising materials of recent interest. Metal matrix composites (MMCs) possess significantly improved properties compared to unreinforced alloys. There has been an increasing interest in composites containing low density and low cost reinforce...