TY - JOUR
T1 - Temperature-dependent elastic stiffness constants of fcc-based metal nitrides from first-principles calculations
AU - Wang, Aijun
AU - Shang, Shun Li
AU - He, Mingzhi
AU - Du, Yong
AU - Chen, Li
AU - Zhang, Rui
AU - Chen, Deliang
AU - Fan, Bingbing
AU - Meng, Feiyan
AU - Liu, Zi Kui
N1 - Funding Information:
Acknowledgements This work was supported by the Creative Research Group of the NSFC (Grant No. 51021063), the National Natural Science Foundation of China (NSFC) for Youth of China (Grant No. 51001120), the National Natural Science Foundation of China (Grant No. 51071179), the China Postdoctoral Science Foundation (Grant No. 2013M531682), and AQSIQ Science and Technology Plan Project (Grant No. 2012QK133). ZKL and SLS acknowledge the support from the NSFC with Grant No. 51028101 and the United States National Science Foundation under the Grant No. DMR-1006557.
PY - 2014/1
Y1 - 2014/1
N2 - Temperature-dependent single-crystal elastic stiffness constants and the associated polycrystalline aggregate properties of fcc-based metal nitrides (MNs; M = Ti, Al, Zr, and Hf) have been investigated using a quasistatic approach via first-principles calculations. It is confirmed that the four studied nitrides are brittle materials and mechanically stable, agreeing with experimental results. Among these compounds, TiN and AlN possess the highest strength and the highest hardness, respectively. The cross-slip and the resistance to microcracks are analyzed based on the elastic anisotropy ratio. Additionally, it is found that the decreasing trend of C11 with respect to temperature is larger than that of C12 or C44. With increasing temperature, the resistance of shear deformation, stiffness, hardness, and strength of these four nitrides decrease. The computed properties of MNs agree well with the experimental data available in the literature.
AB - Temperature-dependent single-crystal elastic stiffness constants and the associated polycrystalline aggregate properties of fcc-based metal nitrides (MNs; M = Ti, Al, Zr, and Hf) have been investigated using a quasistatic approach via first-principles calculations. It is confirmed that the four studied nitrides are brittle materials and mechanically stable, agreeing with experimental results. Among these compounds, TiN and AlN possess the highest strength and the highest hardness, respectively. The cross-slip and the resistance to microcracks are analyzed based on the elastic anisotropy ratio. Additionally, it is found that the decreasing trend of C11 with respect to temperature is larger than that of C12 or C44. With increasing temperature, the resistance of shear deformation, stiffness, hardness, and strength of these four nitrides decrease. The computed properties of MNs agree well with the experimental data available in the literature.
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U2 - 10.1007/s10853-013-7721-y
DO - 10.1007/s10853-013-7721-y
M3 - Article
AN - SCOPUS:84891282281
SN - 0022-2461
VL - 49
SP - 424
EP - 432
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 1
ER -