Romero, F. J and Manchado, J. and Martín-Olalla, J. M and Gallardo, M. C and Salje, E. K. H. (2011) Dynamic heat flux experiments in Cu67.64Zn16.71Al15.65: Separating the time scales of fast and ultra-slow kinetic processes in martensitic transformations. Applied Physics Letters, 99 (1). 011906-011906. DOI https://doi.org/10.1063/1.3609239
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Abstract
Crackling noise and avalanches during the martensite phase transformation of Cu67.64Zn16.71Al15.65 were investigated. Heat flux measurements with extremely slow heating rates of 0.005 Kh−1 allowed sufficient separation between the continuous background and the avalanche jerks. The jerk enthalpy is below 3% of the total transformation enthalpy. The crackling noise follows power law behavior with an energy exponent near ɛ = 1.8. The jerks are almost uncorrelated with approximately a Poisson distribution of the waiting times between jerks. Quantitative analysis showed a scaling behavior with p(wt) ∼ wt(γ−1)exp(−wt/τ)n with γ = 0.7 and n ≈ 1.
Item Type: | Article |
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Uncontrolled Keywords: | 2011AREP; IA62; |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Applied Physics Letters |
Volume: | 99 |
Page Range: | 011906-011906 |
Identification Number: | https://doi.org/10.1063/1.3609239 |
Depositing User: | Sarah Humbert |
Date Deposited: | 08 Feb 2012 10:33 |
Last Modified: | 23 Jul 2013 10:03 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/2371 |
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