Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 803, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140696
Keywords
Stacking faults; Twin; In situ; Molecular dynamics; Mechanical property
Categories
Funding
- NSF-DMR [1508484, 1642759]
- DOE-BES [DE-SC0016337]
- U.S. Office of Naval Research [N00014-17-1-2087, N00014-20-1-2043]
- Research Computing Data Core at the University of Houston
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1508484, 1642759] Funding Source: National Science Foundation
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Recent studies have shown that the influence of stacking faults on mechanical behavior of metallic or ceramic materials becomes prominent when their density increases sharply, sometimes dominating in some cases. This article reviews how nanoscale stacking faults impact the mechanical behavior of these materials, focusing on their formation, interactions with dislocations, and phase transformations during plastic deformation. The aim is to highlight the potential opportunities in using stacking faults to tailor the deformation mechanisms of advanced materials.
There are abundant studies on deformation mechanisms in metallic materials dominated by grain boundaries and twin boundaries. In comparison, the influence of stacking faults on deformation mechanisms of materials remains less well understood. Recent studies have shown that when the density of stacking faults increases sharply, their influence on mechanical behavior of metallic or ceramic materials becomes prominent, and in fact, dominates in some cases. This article reviews recent research progress on how nanoscale stacking faults impact the mechanical behavior of metallic and ceramic materials. We primarily focus on studies that reveal the formation of preexisting stacking faults, their interactions with dislocations, and phase transformations during plastic deformation as evidenced by experiments and simulations. The aim of this review is to highlight the potential opportunities in using stacking faults to tailor the deformation mechanisms of advanced materials.
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