@article{2114d3ac71f241f2a802ef7f008b3981,
title = "A study of crack initiation in a low alloy steel",
abstract = "Taking advantage of in-situ fracture testing method inside a transmission electron microscope (TEM), crack evolution in a low alloy steel under low triaxiality conditions is studied and the interaction between cementite particles and the crack is revealed. It is found that the ferrite matrix is the major void initiation site due to the low stress triaxiality in the thin TEM sample (plane stress condition), which contrasts the behavior under plane strain conditions in bulk specimens, where voids are typically found to initiate by decohesion at the particle/matrix interface. This work reveals that fracture behavior proceeds differently under low triaxiality conditions, such as the shear lip region of fractured bulk sample, and demonstrates the possibility to avoid interface decohesion and thereby to enhance ductility in steels.",
keywords = "Cementite, Fracture, Low alloy steel, Void",
author = "Lin Tian and Christine Borchers and Masanobu Kubota and Petros Sofronis and Reiner Kirchheim and Volkert, {Cynthia A.}",
note = "Funding Information: L.T. acknowledges Alexander von Humboldt foundation and the Start-Bridge-Finish Program from ICASEC from University of G{\"o}ttingen. M. Kubota, P. Sofronis, and R. Kirchheim gratefully acknowledge the support of the International Institute for Carbon-Neutral Energy Research (WPI-I 2 CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. The authors acknowledge the Lindemann Stiftung from University of G{\"o}ttingen for the financial support. The use of equipment in the “Collaborative Laboratory and User Facility for Electron Microscopy” (CLUE) is gratefully acknowledged. L.T. thanks Prof. Ruitao Qu and Dr. Ulrich Ro{\ss} for useful discussions. Funding Information: L.T. acknowledges Alexander von Humboldt foundation and the Start-Bridge-Finish Program from ICASEC from University of G?ttingen. M. Kubota, P. Sofronis, and R. Kirchheim gratefully acknowledge the support of the International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. The authors acknowledge the Lindemann Stiftung from University of G?ttingen for the financial support. The use of equipment in the ?Collaborative Laboratory and User Facility for Electron Microscopy? (CLUE) is gratefully acknowledged. L.T. thanks Prof. Ruitao Qu and Dr. Ulrich Ro? for useful discussions. Publisher Copyright: {\textcopyright} 2021",
year = "2022",
month = jan,
day = "15",
doi = "10.1016/j.actamat.2021.117474",
language = "English (US)",
volume = "223",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",
}