Multiple mechanisms of lath martensite plasticity

L. Morsdorf, O. Jeannin, D. Barbier, Masatoshi Mitsuhara, D. Raabe, C. C. Tasan

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The multi-scale complexity of lath martensitic microstructures requires scale-bridging analyses to better understand the deformation mechanisms activated therein. In this study, plasticity in lath martensite is investigated by multi-field mapping of deformation-induced microstructure, topography, and strain evolution at different spatial resolution vs. field-of-view combinations. These investigations reveal site-specific initiation of dislocation activity within laths, as well as significant plastic accommodation in the vicinity of high angle block and packet boundaries. The observation of interface plasticity raises several questions regarding the role of thin inter-lath austenite films. Thus, accompanying transmission electron microscopy and synchrotron x-ray diffraction experiments are carried out to investigate the stability of these films to mechanical loading, and to discuss alternative boundary sliding mechanisms to explain the observed interface strain localization.

Original languageEnglish
Pages (from-to)202-214
Number of pages13
JournalActa Materialia
Volume121
DOIs
Publication statusPublished - Dec 1 2016

Fingerprint

Martensite
Plasticity
Microstructure
Synchrotrons
Austenite
Topography
Diffraction
Plastics
Transmission electron microscopy
X rays
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Morsdorf, L., Jeannin, O., Barbier, D., Mitsuhara, M., Raabe, D., & Tasan, C. C. (2016). Multiple mechanisms of lath martensite plasticity. Acta Materialia, 121, 202-214. https://doi.org/10.1016/j.actamat.2016.09.006

Multiple mechanisms of lath martensite plasticity. / Morsdorf, L.; Jeannin, O.; Barbier, D.; Mitsuhara, Masatoshi; Raabe, D.; Tasan, C. C.

In: Acta Materialia, Vol. 121, 01.12.2016, p. 202-214.

Research output: Contribution to journalArticle

Morsdorf, L, Jeannin, O, Barbier, D, Mitsuhara, M, Raabe, D & Tasan, CC 2016, 'Multiple mechanisms of lath martensite plasticity', Acta Materialia, vol. 121, pp. 202-214. https://doi.org/10.1016/j.actamat.2016.09.006
Morsdorf, L. ; Jeannin, O. ; Barbier, D. ; Mitsuhara, Masatoshi ; Raabe, D. ; Tasan, C. C. / Multiple mechanisms of lath martensite plasticity. In: Acta Materialia. 2016 ; Vol. 121. pp. 202-214.
@article{b402c96230a84471b7ac0e0b019017bc,
title = "Multiple mechanisms of lath martensite plasticity",
abstract = "The multi-scale complexity of lath martensitic microstructures requires scale-bridging analyses to better understand the deformation mechanisms activated therein. In this study, plasticity in lath martensite is investigated by multi-field mapping of deformation-induced microstructure, topography, and strain evolution at different spatial resolution vs. field-of-view combinations. These investigations reveal site-specific initiation of dislocation activity within laths, as well as significant plastic accommodation in the vicinity of high angle block and packet boundaries. The observation of interface plasticity raises several questions regarding the role of thin inter-lath austenite films. Thus, accompanying transmission electron microscopy and synchrotron x-ray diffraction experiments are carried out to investigate the stability of these films to mechanical loading, and to discuss alternative boundary sliding mechanisms to explain the observed interface strain localization.",
author = "L. Morsdorf and O. Jeannin and D. Barbier and Masatoshi Mitsuhara and D. Raabe and Tasan, {C. C.}",
year = "2016",
month = "12",
day = "1",
doi = "10.1016/j.actamat.2016.09.006",
language = "English",
volume = "121",
pages = "202--214",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Multiple mechanisms of lath martensite plasticity

AU - Morsdorf, L.

AU - Jeannin, O.

AU - Barbier, D.

AU - Mitsuhara, Masatoshi

AU - Raabe, D.

AU - Tasan, C. C.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The multi-scale complexity of lath martensitic microstructures requires scale-bridging analyses to better understand the deformation mechanisms activated therein. In this study, plasticity in lath martensite is investigated by multi-field mapping of deformation-induced microstructure, topography, and strain evolution at different spatial resolution vs. field-of-view combinations. These investigations reveal site-specific initiation of dislocation activity within laths, as well as significant plastic accommodation in the vicinity of high angle block and packet boundaries. The observation of interface plasticity raises several questions regarding the role of thin inter-lath austenite films. Thus, accompanying transmission electron microscopy and synchrotron x-ray diffraction experiments are carried out to investigate the stability of these films to mechanical loading, and to discuss alternative boundary sliding mechanisms to explain the observed interface strain localization.

AB - The multi-scale complexity of lath martensitic microstructures requires scale-bridging analyses to better understand the deformation mechanisms activated therein. In this study, plasticity in lath martensite is investigated by multi-field mapping of deformation-induced microstructure, topography, and strain evolution at different spatial resolution vs. field-of-view combinations. These investigations reveal site-specific initiation of dislocation activity within laths, as well as significant plastic accommodation in the vicinity of high angle block and packet boundaries. The observation of interface plasticity raises several questions regarding the role of thin inter-lath austenite films. Thus, accompanying transmission electron microscopy and synchrotron x-ray diffraction experiments are carried out to investigate the stability of these films to mechanical loading, and to discuss alternative boundary sliding mechanisms to explain the observed interface strain localization.

UR - http://www.scopus.com/inward/record.url?scp=84987941400&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84987941400&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2016.09.006

DO - 10.1016/j.actamat.2016.09.006

M3 - Article

AN - SCOPUS:84987941400

VL - 121

SP - 202

EP - 214

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -