Microstructural damage evolution and arrest in binary Fe–high-Mn alloys with different deformation temperatures

Motomichi Koyama, Takahiro Kaneko, Takahiro Sawaguchi, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

Abstract

We investigated the damage evolution behaviors of binary Fe–28–40Mn alloys (mass%) from 93 to 393 K by tensile testing. The underlying mechanisms of the microstructure-dependent damage evolution behavior were uncovered by damage quantification coupled with in situ strain mapping and post-mortem microstructure characterization. The damage growth behaviors could be classified into three types. In type I, the Fe–28Mn alloy at 93 K showed premature fracture associated with ductile damage initiation and subsequent quasi-cleavage damage growth associated with the ε -martensitic transformation. In type II, the Fe–28Mn alloy at 293 K and the Fe–32Mn alloy at 93 K showed delayed damage growth but did not stop growing. In type III, when the stacking fault energy was >19 mJ/m 2, the damage was strongly arrested until final ductile failure.

Original languageEnglish
Pages (from-to)193-206
Number of pages14
JournalInternational Journal of Fracture
Volume213
Issue number2
DOIs
Publication statusPublished - Oct 1 2018

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Damage
Binary
Microstructure
Binary alloys
Martensitic transformations
Tensile testing
Stacking faults
Temperature
Martensitic Transformation
Binary Alloys
Stacking
Quantification
Fault
Testing
Dependent
Energy

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

Cite this

Microstructural damage evolution and arrest in binary Fe–high-Mn alloys with different deformation temperatures. / Koyama, Motomichi; Kaneko, Takahiro; Sawaguchi, Takahiro; Tsuzaki, Kaneaki.

In: International Journal of Fracture, Vol. 213, No. 2, 01.10.2018, p. 193-206.

Research output: Contribution to journalArticle

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