کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9867959 1530676 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermomechanical lattice instability and phase field theory of martensitic phase transformations, twinning and dislocations at large strains
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Thermomechanical lattice instability and phase field theory of martensitic phase transformations, twinning and dislocations at large strains
چکیده انگلیسی
Using the second law of thermodynamics, a criterion for the instability of a crystal lattice with respect to a change in order parameters is derived for finite strains and lattice rotations. An explicit relation for lattice rotation is derived. A Gibbs (Landau) potential describing martensitic phase transformations, twinning, and dislocation nucleation is derived for a prescribed nonsymmetric nominal stress tensor and small elastic strain, but finite transformation strain and rotations. The equilibrium and transformation conditions are obtained. Martensitic phase transformations in NiAl, BN and C are analyzed and the importance of finite-strain corrections is demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 343, Issues 1–3, 1 August 2005, Pages 32-39
نویسندگان
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