Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation

T. H. Ahn, C. S. Oh, Do Hyang Kim, K. H. Oh, H. Bei, E. P. George, H. N. Han

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load-displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation. The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation.

Original languageEnglish
Pages (from-to)540-543
Number of pages4
JournalScripta Materialia
Volume63
Issue number5
DOIs
Publication statusPublished - 2010 Sep 1

Fingerprint

Martensitic transformations
martensitic transformation
Nanoindentation
nanoindentation
austenite
Austenite
martensite
Martensite
Steel
Focused ion beams
ion beams
steels
Transmission electron microscopy
transmission electron microscopy
cross sections
curves

All Science Journal Classification (ASJC) codes

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

Cite this

Ahn, T. H. ; Oh, C. S. ; Kim, Do Hyang ; Oh, K. H. ; Bei, H. ; George, E. P. ; Han, H. N. / Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation. In: Scripta Materialia. 2010 ; Vol. 63, No. 5. pp. 540-543.
@article{060472f7c2f44eeab0c2f9b10feb9a10,
title = "Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation",
abstract = "Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load-displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation. The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation.",
author = "Ahn, {T. H.} and Oh, {C. S.} and Kim, {Do Hyang} and Oh, {K. H.} and H. Bei and George, {E. P.} and Han, {H. N.}",
year = "2010",
month = "9",
day = "1",
doi = "10.1016/j.scriptamat.2010.05.024",
language = "English",
volume = "63",
pages = "540--543",
journal = "Scripta Materialia",
issn = "1359-6462",
publisher = "Elsevier Limited",
number = "5",

}

Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation. / Ahn, T. H.; Oh, C. S.; Kim, Do Hyang; Oh, K. H.; Bei, H.; George, E. P.; Han, H. N.

In: Scripta Materialia, Vol. 63, No. 5, 01.09.2010, p. 540-543.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation

AU - Ahn, T. H.

AU - Oh, C. S.

AU - Kim, Do Hyang

AU - Oh, K. H.

AU - Bei, H.

AU - George, E. P.

AU - Han, H. N.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load-displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation. The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation.

AB - Strain-induced martensitic transformation of metastable austenite was investigated by nanoindentation of individual austenite grains in multi-phase steel. A cross-section prepared through one of these indented regions using focused ion beam milling was examined by transmission electron microscopy. The presence of martensite underneath the indent indicates that the pop-ins observed on the load-displacement curve during nanoindentation correspond to the onset of strain-induced martensitic transformation. The pop-ins can be understood as resulting from the selection of a favorable martensite variant during nanoindentation.

UR - http://www.scopus.com/inward/record.url?scp=77953810831&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953810831&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2010.05.024

DO - 10.1016/j.scriptamat.2010.05.024

M3 - Article

VL - 63

SP - 540

EP - 543

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

IS - 5

ER -