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Dahar-Thesis version 2-7.pdf (10.3 MB)

ETD Abstract Container

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Effects of Microstructure on Fracture and Fatigue Crack Growth of Ti-48Al-2Nb-2Cr Next Generation Turbine Blade Material

Dahar, Matthew Scott
http://orcid.org/0000-0002-7773-2133
http://rave.ohiolink.edu/etdc/view?acc_num=case1401280809

Abstract Details

2014, Master of Sciences (Engineering), Case Western Reserve University, Materials Science and Engineering.
The room temperature fracture and fatigue-crack growth behavior of as-cast Ti-48Al-2Nb-2Cr titanium aluminide next generation turbine blade material was investigated to determining mechanical properties. As-cast samples were tested in the longitudinal and transverse direction at room temperature in air. The effects of changes in sample orientation on the toughness and fatigue crack growth behavior were determined under different loading conditions. In the fatigue tests, the threshold for fatigue cracking was determined in addition to the Paris law slope. The overload toughness obtained in fatigue, Kc, was also determined. SEM fractography was used to document the effects of orientation on the fracture morphology. The effects of sample orientation was found to have minimal effects on the mechanical properties.
John Lewandowski (Advisor)
Jennifer Carter (Committee Member)
David Schwam (Committee Member)
125 p.
Materials Science
TiAl, Fatigue, Fracture, Gamma TiAl, Turbine blade

Recommended Citations

Citations

  • Dahar, M. S. (2014). Effects of Microstructure on Fracture and Fatigue Crack Growth of Ti-48Al-2Nb-2Cr Next Generation Turbine Blade Material [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1401280809

    APA Style (7th edition)

  • Dahar, Matthew. Effects of Microstructure on Fracture and Fatigue Crack Growth of Ti-48Al-2Nb-2Cr Next Generation Turbine Blade Material. 2014. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1401280809.

    MLA Style (8th edition)

  • Dahar, Matthew. "Effects of Microstructure on Fracture and Fatigue Crack Growth of Ti-48Al-2Nb-2Cr Next Generation Turbine Blade Material." Master's thesis, Case Western Reserve University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1401280809

    Chicago Manual of Style (17th edition)

case1401280809
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© 2014, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.