A multiscale approach for the deformation mechanism in pearlite microstructure: Numerical evaluation of elasto-plastic deformation in fine lamellar structures

Tetsuya Ohashi, Lidyana Roslan, Kohsuke Takahashi, Tomotsugu Shimokawa, Masaki Tanaka, Kenji Higashida

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Elasto-plastic deformations in the microstructures of pearlite are studied by finite-element analyses. Various models for the lamellar structure are made and the material properties of cementite and ferrite are established. Deformation of a bare specimen of cementite is unstable immediately after the yield point, while cementite lamellae show some stability when they are layered with ferrite. When higher values of yield stress and strain hardening are used for ferrite phase, cementite deforms well beyond the elastic range and the distribution of plastic strain is not concentrated. These results show that not only the layered structure but also the improved mechanical property of fine lamellae of ferrite contribute largely to stable deformation in the pearlite microstructure.

Original languageEnglish
Pages (from-to)214-220
Number of pages7
JournalMaterials Science and Engineering A
Volume588
DOIs
Publication statusPublished - Dec 20 2013

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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