Effect of interstitial-driven lattice expansion on the stacking fault energy in austenitic steels

2015/11/27 by Song Lu, Wei Li, Lu, Song +13
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Metal Alloys Wear and Properties #Metallurgy and Material Forming #Microstructure and Mechanical Properties of Steels #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.1511.08620

5 pages and 2 figures

arxiv created 2015/11/27 · openalex publication_date 2015/11/27 · arxiv updated 2015/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Interstitials (carbon and nitrogen) are crucial alloying elements for optimizing the mechanical performance of the twinning-induced plasticity (TWIP) steels in terms of the stacking fault energy (SFE). First-principles calculations have been performed to study the effect of interstitial-induced lattice expansion on the SFE. Comparing the predictions with the SFEs measured for alloys containing C and N, our results suggest that the dominant effect of these interstitials on the SFE is due to the lattice expansion effect.

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