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EFFECT OF TEMPERATURE, STRAIN RATE, AND AXIAL STRAIN ON DIRECT POWDER FORGED ALUMINUM-SILICON CARBIDE METAL MATRIX COMPOSITES

Bindas, Erica, Bindas
http://orcid.org/0000-0002-7994-974X
http://rave.ohiolink.edu/etdc/view?acc_num=case1530871866585058

Abstract Details

2018, Master of Sciences (Engineering), Case Western Reserve University, Materials Science and Engineering.
The effects of temperature, strain rate, and strain on densification and hardness of direct powder forged metal matrix composites was analyzed. Manufactured by Materion Brush, the MMCs were premixed, mechanically-alloyed, agglomerate powders of Al6061/20%/SiCp/0.7µm and Al6061/40%/SiCp/3.0µm. Open-die direct powder forging was conducted on 80% relative density, green powder compacts under temperatures ranging from 475 to 550 oC, with strain rates from 0.001/s to 0.1/s, and strain levels from -0.16 to -1.51 true strain. Flow stress increased with a decrease in temperature or increase in reinforcement volume fraction and exhibits little softening under the conditions tested in this study. Relative density values up to 97% were achieved in the center region of the ~38 mm diameter DPF billet, requiring forging loads of less than 50 kN, ~15 times lower than unreinforced aluminum in a closed die. Within the chosen range of temperatures and strain rates, strain was determined to have the largest effect on densification. Vickers microhardness show the strongest correlation with density and increases with true strain.
Matthew Willard (Advisor)
John Lewandowski (Advisor)
Sunniva Collins (Committee Member)
275 p.
Aerospace Materials; Materials Science; Metallurgy
MMC; metal matrix composite; direct powder forging; DPF; aluminum; silicon carbide; DRA; discontinuously reinforced aluminum; densification; porosity; hardness; microhardness; aerospace materials; SupremEX; forging; powder forging; powder metallurgy; PM

Recommended Citations

Citations

  • Bindas, Bindas, E. (2018). EFFECT OF TEMPERATURE, STRAIN RATE, AND AXIAL STRAIN ON DIRECT POWDER FORGED ALUMINUM-SILICON CARBIDE METAL MATRIX COMPOSITES [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1530871866585058

    APA Style (7th edition)

  • Bindas, Bindas, Erica. EFFECT OF TEMPERATURE, STRAIN RATE, AND AXIAL STRAIN ON DIRECT POWDER FORGED ALUMINUM-SILICON CARBIDE METAL MATRIX COMPOSITES. 2018. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1530871866585058.

    MLA Style (8th edition)

  • Bindas, Bindas, Erica. "EFFECT OF TEMPERATURE, STRAIN RATE, AND AXIAL STRAIN ON DIRECT POWDER FORGED ALUMINUM-SILICON CARBIDE METAL MATRIX COMPOSITES." Master's thesis, Case Western Reserve University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1530871866585058

    Chicago Manual of Style (17th edition)

case1530871866585058
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© 2018, some rights reserved.Creative Commons License EFFECT OF TEMPERATURE, STRAIN RATE, AND AXIAL STRAIN ON DIRECT POWDER FORGED ALUMINUM-SILICON CARBIDE METAL MATRIX COMPOSITES by Erica Bindas Bindas is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.