Coupled plastic flow and phase transformation under compression of materials in a diamond anvil cell: Effects of transformation kinetics and yield strength

Oleg M. Zarechnyy, Valery I. Levitas, Yanzhang Ma
2012 Journal of Applied Physics  
The large-strain problem on phase transformations (PTs) under compression in a diamond anvil cell is studied in detail using the finite-element method. The combined effect of transformation kinetics and ratios of the yield strengths of low-and high-pressure phases is examined. Some experimental phenomena (e.g., plateaus in pressure distribution and plasticflow to the center of a sample) are reproduced. Results are applied to interpretation of experimental data and characterization of
more » ... ation of strain-induced PTs. The large-strain problem on phase transformations (PTs) under compression in a diamond anvil cell is studied in detail using the finite-element method. The combined effect of transformation kinetics and ratios of the yield strengths of low-and high-pressure phases is examined. Some experimental phenomena (e.g., plateaus in pressure distribution and plastic flow to the center of a sample) are reproduced. Results are applied to interpretation of experimental data and characterization of strain-induced PTs. [This article is copyrighted as indicated in the abstract. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 129.186.176.91 On: Mon, 25 Nov 2013 23:40:57 023518-3 Zarechnyy, Levitas, and Ma J. Appl. Phys. 111, 023518 (2012) [This article is copyrighted as indicated in the abstract. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 129.186.176.91 On: Mon, 25 Nov 2013 23:40:57 023518-4 Zarechnyy, Levitas, and Ma J. Appl. Phys. 111, 023518 (2012) [This article is copyrighted as indicated in the abstract. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 129.186.176.91 On: Mon, 25 Nov 2013 23:40:57 023518-5 Zarechnyy, Levitas, and Ma J. Appl. Phys. 111, 023518 (2012) [This article is copyrighted as indicated in the abstract. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to ] IP: 129.186.176.91 On: Mon, 25 Nov 2013 23:40:57
doi:10.1063/1.3677977 fatcat:e4ykabzx2vgo3bm3ntd5uoi2wu