The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy

Christopher J. Cowen, Carl J. Boehlert

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

Abstract

In-situ tensile-creep experiments were performed on a Ti-15Al-33Nb(at%) alloy using a specialized tensile stage placed within the vacuum chamber of a Camscan 44 FE scanning electron microscope (SEM). The creep damage evolution on the sample surface was chronicled through backscattered electron (BSE) imaging as a function of stress, time, and creep displacement at 650°C. The experiments revealed that the prior-BCC grain boundaries were the locus of damage accumulation during creep and significant grain boundary cracking was observed. The grain boundary cracking was verified to occur within the bulk of the material through post-mortem analysis.

LanguageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
Pages413-418
Number of pages6
Volume980
StatePublished - 2007
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Nov 30 2006

Other

Other2006 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/27/0611/30/06

Profile

Creep
Grain boundaries
Electron microscopes
Experiments
Vacuum
Scanning
Imaging techniques
Electrons

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Cowen, C. J., & Boehlert, C. J. (2007). The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. In Materials Research Society Symposium Proceedings (Vol. 980, pp. 413-418)

The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. / Cowen, Christopher J.; Boehlert, Carl J.

Materials Research Society Symposium Proceedings. Vol. 980 2007. p. 413-418.

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

Cowen, CJ & Boehlert, CJ 2007, The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. in Materials Research Society Symposium Proceedings. vol. 980, pp. 413-418, 2006 MRS Fall Meeting, Boston, MA, United States, 11/27/06.
Cowen CJ, Boehlert CJ. The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. In Materials Research Society Symposium Proceedings. Vol. 980. 2007. p. 413-418.
Cowen, Christopher J. ; Boehlert, Carl J./ The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. Materials Research Society Symposium Proceedings. Vol. 980 2007. pp. 413-418
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