Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Consistent Description of Martensitic Transformation in Polycrystals by Lagrange-Rayleigh Dynamics
Year:2016
Research Areas
  • Chemical phisycs of materials,
  • Computer chemistry,
  • Kinetic,
  • Thermodynamics,
  • Physics - Structure of materials,
  • Structural phase transition
Information
Abstract
A modified model that applies the Lagrange-Rayleigh dynamics (LR) with the Landau energetics is developed for the martensitic transformation (MT) in polycrystals. We define the order parameter via a coupling of local primary strain order parameter to grain orientation and then represent them with the displacement gradient in laboratory reference. Different from the existing LR-Landau model of MT, we solve the dissipative force equation of the reformulated local transformation stress in laboratory reference, enabling such crystallographic orientation relevant microstructural features in polycrystals as twin boundaries and habit planes, etc to be correctly described. Exemplifying in Square-to-Rectangle (SR) and Triangle-to-Centered Rectangle (TCR) MTs in polycrystalline ferroelastic materials, we update the existing LR-Landau modeling with the regularly organized changes of aforementioned microstructure signatures with respect to different grain orientations, which further allow to simulate morphology change under external loadings. Based on the analysis of martensitic microstructure and its evolution in depth, we demonstrate that the our simulated microstructure signatures in statics largely rest physical inherency with continuum mechanical interpretation of phenomenological theory of martensite crystallography (CM-PTMC), nevertheless, the implementation of the model with the under-damped dynamics predicts distinct transformation pathways of temporal evolution.
International
Si
JCR
Si
Title
Modelling And Simulation in Materials Science And Engineering
ISBN
0965-0393
Impact factor JCR
2,167
Impact info
Datos JCR del año 2014
Volume
Journal number
From page
TBD
To page
TBD
Month
SIN MES
Ranking
Participants
  • Autor: Guanglong Xu (UPM)
  • Autor: Yuwen Cui
  • Autor: Fco. Javier Llorca Martinez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
  • Departamento: Ciencia de Materiales
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)