3-d Model for strain ordering in steel: II Relaxational effects |
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Authors: | S K Ghoshal and S Dattagupta |
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Institution: | (1) Physics Department, LTRP, Indian Institute of Technology, 110016 New Delhi, India;(2) School of Physical Sciences, Jawaharlal Nehru University, 110067 New Delhi, India |
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Abstract: | The spring-defect model developed by us in the accompanying paper I to discuss ferroelasticity, exhibited in the BCT phase
of α-iron (BCC metals), is used to analyse anelastic relaxation across the paraelastic to ferroelastic phase transition. The
kinetics of the underlying Hamiltonian representing strain-strain interactions is treated within mean-field theory. The relaxation-response
relation of the linear response theory is employed to derive explicit expressions for the anelastic strain, the frequency-dependent
compliance and the internal friction in terms of the basic parameters of the spring-defect model. |
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Keywords: | α -iron anelastic relaxation internal friction |
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