Hall-Petch and multiple linear regression equations for the prediction of mechanical properties in gamma-based titanium aluminides
- Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
In a recent paper, Mercer and Soboyejo demonstrated the Hall-Petch dependence of basic room- and elevated-temperature (815 C) mechanical properties (0.2% offset strength, ultimate tensile strength, plastic elongation to failure and fracture toughness) on the average equiaxed/lamellar grain size. Simple Hall-Petch behavior was shown to occur in a wide range of extruded duplex {alpha}{sub 2}+{gamma} alloys (Ti-48Al, Ti-48Al-1.4Mn Ti-48Al-2Mn and Ti-48Al-1.5Cr). As in steels and other materials, simple Hall-Petch equations were derived for the above properties. However, the Hall-Petch equations did not include the effect of other variables that can affect the basic mechanical properties of gamma alloys. Multiple linear regression equations for the prediction of the combined effects of several (alloying, microstructure and temperature) variables on basic mechanical properties temperature are presented in this paper.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 571741
- Report Number(s):
- CONF-961202-; TRN: IM9806%%67
- Resource Relation:
- Conference: 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996; Other Information: PBD: 1997; Related Information: Is Part Of High-temperature ordered intermetallic alloys VII; Koch, C.C. [ed.] [North Carolina State Univ., Raleigh, NC (United States)]; Liu, C.T. [ed.] [Oak Ridge National Lab., TN (United States)]; Stoloff, N.S. [ed.] [Rensselaer Polytechnic Inst., Troy, NY (United States)]; Wanner, A. [ed.] [Univ. Stuttgart (Germany)]; PB: 799 p.; Materials Research Society symposium proceedings, Volume 460
- Country of Publication:
- United States
- Language:
- English
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