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Article

Influence of Temperature on Mechanical Properties of Nanocrystalline 316L Stainless Steel Investigated via Molecular Dynamics Simulations

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State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2
Department of Physics, Faculty of Science and Technology, University of Shendi, Shendi, River Nile State, P.O. Box 407, Sudan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(12), 2803; https://doi.org/10.3390/ma13122803
Received: 24 May 2020 / Revised: 15 June 2020 / Accepted: 18 June 2020 / Published: 22 June 2020
Molecular dynamics simulations were conducted to study the mechanical properties of nanocrystalline 316L stainless steel under tensile load. The results revealed that the Young’s modulus increased with increasing grain size below the critical average grain size. Two grain size regions were identified in the plot of yield stress. In the first region, corresponding to grain sizes above 7.7 nm, the yield stress decreased with increasing grain size and the dominant deformation mechanisms were deformation twinning and extended dislocation. In the second region, corresponding to grain sizes below 7.7 nm, the yield stress decreased rapidly with decreasing grain size and the dominant deformation mechanisms were grain boundary sliding and also grain rotation. The yield strength and Young’s modulus were both found to decrease with increasing temperature, which increased the interatomic distance and thereby decreased the interatomic bonding force. View Full-Text
Keywords: mechanical properties; 316L austenitic stainless steels; grain size; temperature effect; molecular dynamics; embedded atom method mechanical properties; 316L austenitic stainless steels; grain size; temperature effect; molecular dynamics; embedded atom method
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MDPI and ACS Style

Husain, A.; La, P.; Hongzheng, Y.; Jie, S. Influence of Temperature on Mechanical Properties of Nanocrystalline 316L Stainless Steel Investigated via Molecular Dynamics Simulations. Materials 2020, 13, 2803. https://doi.org/10.3390/ma13122803

AMA Style

Husain A, La P, Hongzheng Y, Jie S. Influence of Temperature on Mechanical Properties of Nanocrystalline 316L Stainless Steel Investigated via Molecular Dynamics Simulations. Materials. 2020; 13(12):2803. https://doi.org/10.3390/ma13122803

Chicago/Turabian Style

Husain, Abdelrahim, Peiqing La, Yue Hongzheng, and Sheng Jie. 2020. "Influence of Temperature on Mechanical Properties of Nanocrystalline 316L Stainless Steel Investigated via Molecular Dynamics Simulations" Materials 13, no. 12: 2803. https://doi.org/10.3390/ma13122803

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