The deformation behaviour of an α + β Ti–6Al–4V (wt.%) alloy was investigated during in situ deformation inside a scanning electron microscopy (SEM). Tensile experiments were performed at 296 and 728 K (~0.4Tm), while a tensile-creep experiment was performed at 728 K and 310 MPa (σ/σys = 0.74). The active deformation systems were identified using electron backscattered diffraction-based slip-trace analysis and SEM images of the specimen surface. The distribution of the active deformation systems varied as a function of temperature. Basal slip deformation played a major role in the tensile deformation behaviour, and the relative activity of basal slip increased with increasing temperature. For the 296 K tension deformation, basal slip was less active than prismatic slip, whereas this was reversed at 728 K. Twinning was observed in both the 296 and 728 K tension experiments; however, no more than 4% of the total deformation systems observed was twins. The tension-creep experiment revealed no slip traces, however grain boundary ledge formation was observed, suggesting that grain boundary sliding was an active deformation mechanism. The results of this work were compared with those from previous studies on commercially pure Ti, Ti–5Al–2.5Sn (wt.%) and Ti–8Al–1Mo–1V (wt.%), and the effects of alloying on the deformation behaviour are discussed. Here, the relative amount of basal slip activity increased with increasing Al content.
Li, Hongmei, et al. "Examination of the distribution of the tensile deformation systems in tension and tension-creep of Ti-6Al-4V (wt.%) at 296 K and 728 K." Philosophical Magazine (2003, Print), vol. 95, no. 7, Feb. 2015. https://doi.org/10.1080/14786435.2014.1001459
Li, Hongmei, Boehlert, Carl J., Bieler, Thomas R., & Crimp, Martin A. (2015). Examination of the distribution of the tensile deformation systems in tension and tension-creep of Ti-6Al-4V (wt.%) at 296 K and 728 K. Philosophical Magazine (2003, Print), 95(7). https://doi.org/10.1080/14786435.2014.1001459
Li, Hongmei, Boehlert, Carl J., Bieler, Thomas R., et al., "Examination of the distribution of the tensile deformation systems in tension and tension-creep of Ti-6Al-4V (wt.%) at 296 K and 728 K," Philosophical Magazine (2003, Print) 95, no. 7 (2015), https://doi.org/10.1080/14786435.2014.1001459
@article{osti_1778155,
author = {Li, Hongmei and Boehlert, Carl J. and Bieler, Thomas R. and Crimp, Martin A.},
title = {Examination of the distribution of the tensile deformation systems in tension and tension-creep of Ti-6Al-4V (wt.%) at 296 K and 728 K},
annote = {The deformation behaviour of an α + β Ti–6Al–4V (wt.%) alloy was investigated during in situ deformation inside a scanning electron microscopy (SEM). Tensile experiments were performed at 296 and 728 K (~0.4Tm), while a tensile-creep experiment was performed at 728 K and 310 MPa (σ/σys = 0.74). The active deformation systems were identified using electron backscattered diffraction-based slip-trace analysis and SEM images of the specimen surface. The distribution of the active deformation systems varied as a function of temperature. Basal slip deformation played a major role in the tensile deformation behaviour, and the relative activity of basal slip increased with increasing temperature. For the 296 K tension deformation, basal slip was less active than prismatic slip, whereas this was reversed at 728 K. Twinning was observed in both the 296 and 728 K tension experiments; however, no more than 4% of the total deformation systems observed was twins. The tension-creep experiment revealed no slip traces, however grain boundary ledge formation was observed, suggesting that grain boundary sliding was an active deformation mechanism. The results of this work were compared with those from previous studies on commercially pure Ti, Ti–5Al–2.5Sn (wt.%) and Ti–8Al–1Mo–1V (wt.%), and the effects of alloying on the deformation behaviour are discussed. Here, the relative amount of basal slip activity increased with increasing Al content.},
doi = {10.1080/14786435.2014.1001459},
url = {https://www.osti.gov/biblio/1778155},
journal = {Philosophical Magazine (2003, Print)},
issn = {ISSN 1478-6435},
number = {7},
volume = {95},
place = {United States},
publisher = {Taylor & Francis},
year = {2015},
month = {02}}
Kalidindi, Surya R.; Bhattacharyya, Abhishek; Doherty, Roger D.
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, Vol. 460, Issue 2047https://doi.org/10.1098/rspa.2003.1260