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Title: Entropy modeling on serrated flows in carburized steels

Abstract

Samples comprised of carburized steel alloys, 4615, 4720, and 10B22, were tension tested at room temperature and at a strain rate of 2 × 10-4 s-1. The serrated-flow behavior was modeled and analyzed, using the refined composite multiscale entropy (RCMSE) method. High energy X-ray diffraction revealed the body-centered-cubic (BCC) structure of the three alloys in the as-received condition. Moreover, Vickers-hardness experiments were performed, which showed an increase in the hardness of the alloy that corresponded to increasing impurity concentrations. Here the diffusion coefficient of carbon in the three alloys were estimated, respectively, to be 2.5 × 10-11 m2/s, 5.1 × 10-11 m2/s, and 2.8 × 10-11 m2/s for alloys, 10B22, 4615, and 4720, respectively, which agree with the values found in the literature for α-iron. Moreover, the sample entropy, on average, increased with respect to the heating time, and, consequently, the amount of carbon that had diffused into the alloy. Finally, the above results show that the complexity of the serration behavior in the alloys studied increases with respect to the amount of carbon that has diffused into the material.

Authors:
 [1];  [1];  [1];  [2];  [3];  [1];  [1]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Columbus McKinnon, Lexington, TN (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); National Science Foundation (NSF)
OSTI Identifier:
1558612
Alternate Identifier(s):
OSTI ID: 1547679
Grant/Contract Number:  
AC02-06CH11357; FE0008855; FE-0024054; FE-001119; FE0024054; FE0011194
Resource Type:
Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 753; Journal Issue: C; Journal ID: ISSN 0921-5093
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Modeling/simulations; Hardness; Iron alloys; Plasticity; Stress/strain measurements

Citation Formats

Brechtl, Jamieson, Chen, Bilin, Xie, Xie, Ren, Yang, Venable, Jimmy D., Liaw, Peter K., and Zinkle, Steven J. Entropy modeling on serrated flows in carburized steels. United States: N. p., 2019. Web. doi:10.1016/j.msea.2019.02.096.
Brechtl, Jamieson, Chen, Bilin, Xie, Xie, Ren, Yang, Venable, Jimmy D., Liaw, Peter K., & Zinkle, Steven J. Entropy modeling on serrated flows in carburized steels. United States. https://doi.org/10.1016/j.msea.2019.02.096
Brechtl, Jamieson, Chen, Bilin, Xie, Xie, Ren, Yang, Venable, Jimmy D., Liaw, Peter K., and Zinkle, Steven J. Mon . "Entropy modeling on serrated flows in carburized steels". United States. https://doi.org/10.1016/j.msea.2019.02.096. https://www.osti.gov/servlets/purl/1558612.
@article{osti_1558612,
title = {Entropy modeling on serrated flows in carburized steels},
author = {Brechtl, Jamieson and Chen, Bilin and Xie, Xie and Ren, Yang and Venable, Jimmy D. and Liaw, Peter K. and Zinkle, Steven J.},
abstractNote = {Samples comprised of carburized steel alloys, 4615, 4720, and 10B22, were tension tested at room temperature and at a strain rate of 2 × 10-4 s-1. The serrated-flow behavior was modeled and analyzed, using the refined composite multiscale entropy (RCMSE) method. High energy X-ray diffraction revealed the body-centered-cubic (BCC) structure of the three alloys in the as-received condition. Moreover, Vickers-hardness experiments were performed, which showed an increase in the hardness of the alloy that corresponded to increasing impurity concentrations. Here the diffusion coefficient of carbon in the three alloys were estimated, respectively, to be 2.5 × 10-11 m2/s, 5.1 × 10-11 m2/s, and 2.8 × 10-11 m2/s for alloys, 10B22, 4615, and 4720, respectively, which agree with the values found in the literature for α-iron. Moreover, the sample entropy, on average, increased with respect to the heating time, and, consequently, the amount of carbon that had diffused into the alloy. Finally, the above results show that the complexity of the serration behavior in the alloys studied increases with respect to the amount of carbon that has diffused into the material.},
doi = {10.1016/j.msea.2019.02.096},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 753,
place = {United States},
year = {Mon Mar 04 00:00:00 EST 2019},
month = {Mon Mar 04 00:00:00 EST 2019}
}

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Cited by: 19 works
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Works referencing / citing this record:

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