Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The deformation behavior of a Ti-5Al-2. 5Sn(wt. % ) near α alloy was investigated during in-situ deformation inside a scanning electron microscope (SEM). Tensile experiments were performed at 23°C and 455°C (≈0. 4Tm) .andtensile-creep experiments were performed at 455°C. Both basal and prismatic slip systems were active during the 23°C and 455°C tension tests,hut deformation twinning was not observed. During 23°C deformation, basal slip systems with Schmid factors greater than 0. 25 were observed. At 455"C ,basal slip was activated on systems with Schmid factors greater than 0. 1. During creep, grain boundary ledges formed, some of which evolved into grain boundary cracks, indicating that grain boundary sliding is an active deformation mechanism. Grain boundaries with initial misorientation angles greater than 30° tended to form ledges earlier in the deformation process than boundaries with lower misorientation angles, Less than 10% of the grains imaged in-situ exhibited surface slip traces and a majority of these grains exhibited basal slip. The creep experiments revealed less slip and more grain boundary ledges than in the higher strain rate tensile experiments performed at the same temperature.

    Original languageEnglish (US)
    Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
    Pages937-941
    Number of pages5
    Volume2
    StatePublished - 2012
    Event12th World Conference on Titanium, Ti 2011 - Beijing, China

    Other

    Other12th World Conference on Titanium, Ti 2011
    CountryChina
    CityBeijing
    Period6/19/116/24/11

    Profile

    Carbamyl Phosphate
    Common Bile Duct Diseases
    Experiments
    Creep
    Grain boundaries
    Electron microscopes
    Scanning
    Edema Disease of Swine
    Acetanilides
    Grain boundary sliding
    Twinning
    Levodopa
    Enzymes
    Strain rate
    Cracks
    Temperature

    Keywords

    • Creep
    • Deformation mechanism
    • Slip trace
    • Tension
    • Titanium alloys

    ASJC Scopus subject areas

    • Ceramics and Composites

    Cite this

    Li, H., Boehlert, C. J., Bieler, T. R., & Crimp, M. A. (2012). Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments. In Ti 2011 - Proceedings of the 12th World Conference on Titanium (Vol. 2, pp. 937-941)

    Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments. / Li, Hongmei; Boehlert, Carl J.; Bieler, Thomas R.; Crimp, Martin A.

    Ti 2011 - Proceedings of the 12th World Conference on Titanium. Vol. 2 2012. p. 937-941.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Li, H, Boehlert, CJ, Bieler, TR & Crimp, MA 2012, Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments. in Ti 2011 - Proceedings of the 12th World Conference on Titanium. vol. 2, pp. 937-941, 12th World Conference on Titanium, Ti 2011, Beijing, China, 19-24 June.
    Li H, Boehlert CJ, Bieler TR, Crimp MA. Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments. In Ti 2011 - Proceedings of the 12th World Conference on Titanium. Vol. 2. 2012. p. 937-941.

    Li, Hongmei; Boehlert, Carl J.; Bieler, Thomas R.; Crimp, Martin A. / Analysis of the tension and creep behavior of Ti-5Al-2. 5Sn(wt. %) using in-situ SEM experiments.

    Ti 2011 - Proceedings of the 12th World Conference on Titanium. Vol. 2 2012. p. 937-941.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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