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CHARACTERIZATION OF NEW, CAST, HIGH TEMPERATURE ALUMINUM ALLOYS FOR DIESEL ENGINE APPLICATIONS

PRASAD, PRASHANTH
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148315194

Abstract Details

2006, MS, University of Cincinnati, Engineering : Materials Science.
New environmental regulations have placed stringent requirements on emission levels from diesel and other types of engines. These requirements can only be met if engines can perform more efficiently, burning fuel with reduced emission levels, which requires components fabricated from materials that have the required set of mechanical, physical and environmental-resistance properties at elevated temperatures to ~200¢ªC, in combination with low density and high stiffness. In this context, cast aluminum silicon (354 and 388) alloys were evaluated, because recent developments at NASA have suggested that with compositional and process modifications, significant enhancement in high temperature strength can result. In this study, the microstructures of cast Al alloys 354, with and without NASA modification, and in the T5 and T6 conditions, and 388, with NASA modification, and in the T5 condition were characterized by SEM, TEM and related microscopy techniques. In addition, the aging response of these alloys was studied. Fracture studies of the 388 alloy were carried out as well. The results of the structures, compositions and morphology of second phase precipitates, and evolution and mechanisms of precipitation during aging are reported and correlated with the observed mechanical properties.
Dr. Vijay Vasudevan (Advisor)
113 p.
Engineering, Materials Science
aluminum alloy; TEM; age hardening; precipitation

Recommended Citations

Citations

  • PRASAD, P. (2006). CHARACTERIZATION OF NEW, CAST, HIGH TEMPERATURE ALUMINUM ALLOYS FOR DIESEL ENGINE APPLICATIONS [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148315194

    APA Style (7th edition)

  • PRASAD, PRASHANTH. CHARACTERIZATION OF NEW, CAST, HIGH TEMPERATURE ALUMINUM ALLOYS FOR DIESEL ENGINE APPLICATIONS. 2006. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148315194.

    MLA Style (8th edition)

  • PRASAD, PRASHANTH. "CHARACTERIZATION OF NEW, CAST, HIGH TEMPERATURE ALUMINUM ALLOYS FOR DIESEL ENGINE APPLICATIONS." Master's thesis, University of Cincinnati, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1148315194

    Chicago Manual of Style (17th edition)

ucin1148315194
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© 2006, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.