Abstract
Heterogeneous strain was analyzed in polycrystalline, commercial-purity titanium using many experimental techniques that provide information about microstructure, dislocation arrangement, grain orientation, orientation gradients, surface topography, and local strain gradients. The recrystallized microstructure with 50–200 µm grains was extensively characterized before and after deformation using 4-point bending to strains between 2% and 15%. Extremely heterogeneous deformation occurred along some grain boundaries, leading to orientation gradients exceeding 10° over 10–20 µm. Patches of highly characterized micro-structure were modeled using crystal plasticity finite element (CPFE) analysis to simulate the deformation to evaluate the ability of the CPFE model to capture local deformation processes. Damage nucleation events were identified that are associated with twin interactions with grain boundaries. Progress toward identifying fracture initiation criteria based upon slip and twin interactions with grain boundaries is illustrated with related CPFE simulations of deformation in a TiAl alloy.
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References
R.A. Lebensohn and C.N. Tome, Acta Metall. Mater., 41(9) (1993), pp. 2611–2624.
I. Karaman et al., Acta Mater., 48(9) (2000), pp. 2031–2047.
Z. Yao and R.M. Wagoner, Acta Metall. Mater., 41(2) (1993), pp. 451–468.
F Delaire, J.L. Raphanel, and C. Rey, Acta Mater., 48(5) (2000), pp. 1075–1087.
D. Raabe et al., Acta Metall. Mater., 49 (2001), pp. 3433–3441.
RR. Dawson, D.P Mika, and N.R. Barton, Scripta Mater., 47(10) (2002), pp. 713–717.
J.D. Clayton and D.L. McDowell, Mech. Mater., 36(9) (2004), pp. 799–847.
S. Hao et al., Comput. Methods Appl. Mech. Engrg., 193 (2004), pp. 1865–1908.
A. Ma, F. Roters, and D. Raabe, Acta Materialia, 54(8) (2006), pp. 2181–2194.
K.S. Cheong and E.P. Bussso, J. Mechanics Physics Solids, 54 (2006), pp. 671–689.
J.A. Querln, J.A. Schneider, and M.F Horstemeyer, Materials Science and Engineering A, 463(1–2) (2007), pp. 101–106.
T.R. Bieler, RD. Nicolaou, and Si. Semiatin, Metallurgical and Materials Transactions A, 36A(1) (2005), pp. 129–140.
T.R. Bieler, R.L Goetz, and Si. Semiatin, Mater. Sci. Eng., A405 (2005), pp. 201–213.
S. Ankem et al., Progress in Materials Science, 51 (2006), pp. 632–709.
B. Wagenknecht, D. Llbiran, S. Poon, and K. Sztykiel, “In-sltu Four-Point Bending Apparatus for Scanning Electron Microscopes” (Senior Design Project, Mechanical Engineering, Michigan State University, April 2008).
B.C. Larson et al., Nature, 415 (2002), pp. 887–890.
W. Liu et al., Ultramicroscopy, 103 (2005), pp. 199–204.
R.I. Barabash et al., Applied Physics Letters, 79 (2001), pp. 749–751.
R.I. Barabash, G.E. Ice, and F.J. Walker, J. Applied Physics, 93 (2003), pp. 1457–1464.
X. Wu et al., Acta Materialia, 55 (2007), pp. 423–432.
M.A. Crimp, Microscopy Research and Technique, 69 (2006), pp. 374–381.
B. El-Dasher et al., Analysis of EBSD Data (L17), retrieved from ftp site neon.materials.cmu.edu/rollett/27750/27750.html (2009).
J. Luster and M.A. Morris, Metall. Mater. Trans. A, 26 (1995), p. 1745.
L Wang et al., Metall. Mater. Trans., In press.
B.A. Simkin, M.A. Crimp, and T.R. Bieler, Scripta Materialia, 49(2) (2003), pp. 149–154.
T.R. Bieler et al., J. Engineering and Materials Technology, 130 (2008), 021012.
T.R. Bieler et al., International Journal of Plasticity, 25 (2009), pp. 1655–1683.
D.E. Mason, unpublished research (2009).
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Bieler, T.R., Crimp, M.A., Yang, Y. et al. Strain heterogeneity and damage nucleation at grain boundaries during monotonic deformation in commercial purity titanium. JOM 61, 45–52 (2009). https://doi.org/10.1007/s11837-009-0180-x
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DOI: https://doi.org/10.1007/s11837-009-0180-x