Reinforcement of Aluminum Castings with Dissimilar Metals

Han, Q

Oak Ridge National Laboratory

关键词: Aluminium;    Casting;    Diffusion;    Steels;    36 Materials Science;   

DOI  :  10.2172/885813
RP-ID  :  C/ORNL94-0315
RP-ID  :  DE-AC05-00OR22725
RP-ID  :  885813

美国|英语

来源: UNT Digital Library

【 摘 要 】

The project ''Reinforcement of Aluminum Casting with Dissimilar Metal'' was a Cooperative Research and Development Agreements (CRADAs) between Oak Ridge National Laboratory (ORNL) and Cummins Inc. This project, technologies have been developed to reinforce aluminum castings with steel insert. Defect-free bond between the steel insert and the aluminum casting has been consistently obtained. The push-out experiment indicated that the bond strength is higher than that of the Al-Fin method. Two patents have been granted to the project team that is comprised of Cummins Inc. and ORNL. This report contains four sections: the coating of the steel pins, the cast-in method, microstructure characterization, and the bond strength. The section of the coating of the steel pins contains coating material selection, electro-plating technique for plating Cu and Ni on steel, and diffusion bonding of the coatings to the steel. The section of cast-in method deals with factors that affecting the quality of the metallurgical bond between the coated steel and the aluminum castings. The results of microstructure characteristics of the bonding are presented in the microstructure characterization section. A push-out experiment and the results obtained using this method is described in the section of bond strength/mechanical property.