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Volume 9
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10.3390/met9020145
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Article

Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study

by
Yuchen Dou
1,*,
Hong Luo
1 and
Jing Zhang
2,3,*
1
College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
2
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
3
National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China
*
Authors to whom correspondence should be addressed.
Metals 2019, 9(2), 145; https://doi.org/10.3390/met9020145
Submission received: 28 December 2018 / Revised: 17 January 2019 / Accepted: 24 January 2019 / Published: 29 January 2019
(This article belongs to the Special Issue Computational Methods in Manufacturing Processes)
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Abstract

Austenitic stainless steels suffer from intergranular corrosion and stress corrosion cracking when exposed to elevated temperature (500–800 °C). Under these environments, Cr-carbides and Cr-carbontrides precipitate at the grain boundaries, which results in the formation of Cr-depleted zone. In practice, alloying elements could be added into austenitic stainless steels to modify the precipitation processes. Besides the precipitation processes, the elastic properties of the iron matrix would be influenced. Using the exact muffin-tin orbitals (EMTO) method, the solute effects on the elastic properties of FeCr20Ni8 austenitic stainless steels were studied. Based on the simulated shear modulus (G) and bulk modulus (B), we proposed a design map for FeCr20Ni8 based alloys, aiming to provide a basis for the design of high-performance austenitic stainless steels.
Keywords: stainless steels; elastic properties; first principles; solute effects stainless steels; elastic properties; first principles; solute effects

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MDPI and ACS Style

Dou, Y.; Luo, H.; Zhang, J. Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study. Metals 2019, 9, 145. https://doi.org/10.3390/met9020145

AMA Style

Dou Y, Luo H, Zhang J. Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study. Metals. 2019; 9(2):145. https://doi.org/10.3390/met9020145

Chicago/Turabian Style

Dou, Yuchen, Hong Luo, and Jing Zhang. 2019. "Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study" Metals 9, no. 2: 145. https://doi.org/10.3390/met9020145

APA Style

Dou, Y., Luo, H., & Zhang, J. (2019). Elastic Properties of FeCr20Ni8Xn (X = Mo, Nb, Ta, Ti, V, W and Zr) Austenitic Stainless Steels: A First Principles Study. Metals, 9(2), 145. https://doi.org/10.3390/met9020145

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