Physical interpretation of the microstructure for aged 12 Cr-Mo-V-W steel creep test samples based on simulation of magnetic incremental permeability

Bhaawan Gupta, Benjamin Ducharne, Gael Sebald, Tetsuya Uchimoto, Takamichi Miyazaki, Toshiyuki Takagi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Magnetic Incremental Permeability (MIP) being highly stress dependent proves to be very effective to evaluate materials non-destructively. In this article, modelling technique based on Jiles-Atherton model has been proposed to simulate the signature MIP butterfly loop for the 12 Cr-Mo-V-W creep test samples. Jiles-Atherton parameters imply physical interpretations. From these butterfly loops, a physical relation, based on the values of the J-A's parameters, with the microstructure such as precipitations, dislocations, Kernel Average Misorientation (KAM) has been investigated with experimental as well as simulation validations. It is especially observed that J-A's parameters are well correlated to the precipitation quantity and KAM.

Original languageEnglish
Article number165250
JournalJournal of Magnetism and Magnetic Materials
Volume486
DOIs
Publication statusPublished - 2019 Sep 15

Keywords

  • Creep
  • Jiles-Atherton model
  • Magnetic incremental permeability
  • Micro magnetic non-destructive testing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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