A phase-field model of phase transitions and domain structures of NiCoMnIn metamagnetic alloys

H. B. Huang, X. Q. Ma, J. J. Wang, Z. H. Liu, W. Q. He, L. Q. Chen

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We developed a computational model to investigate the magnetic and structural phase transitions in metamagnetic shape memory alloys. The model combined the phase-field method with micromagnetic simulations. The model was used to calculate the transition temperature from ferromagnetic austenite to antiferromagnetic martensite, the Curie temperature, and their response to an external magnetic field, for the typical metamagnetic alloy NiCoMnIn. The calculated magnetization curves at different temperatures are consistent with reported experimental measurements. The simulations show that the walls of martensite twins are superimposed with the 90° magnetic domain walls of the low-temperature martensite phase, because of magnetostructural order parameter coupling.

Original languageEnglish (US)
Pages (from-to)333-340
Number of pages8
JournalActa Materialia
Volume83
DOIs
StatePublished - Jan 15 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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