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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202300586
|2 doi
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|a pubmed25n1180.xml
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|a (DE-627)NLM354362003
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|a (NLM)36930795
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Luo, Wei
|e verfasserin
|4 aut
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|a Tailoring the Plasticity of Topologically Close-Packed Phases via the Crystals' Fundamental Building Blocks
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|c 2023
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 15.06.2023
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|a Date Revised 15.06.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a Brittle topologically close-packed precipitates form in many advanced alloys. Due to their complex structures, little is known about their plasticity. Here, a strategy is presented to understand and tailor the deformability of these complex phases by considering the Nb-Co µ-phase as an archetypal material. The plasticity of the Nb-Co µ-phase is controlled by the Laves phase building block that forms parts of its unit cell. It is found that between the bulk C15-NbCo2 Laves and Nb-Co µ-phases, the interplanar spacing and local stiffness of the Laves phase building block change, leading to a strong reduction in hardness and stiffness, as well as a transition from synchroshear to crystallographic slip. Furthermore, as the composition changes from Nb6 Co7 to Nb7 Co6 , the Co atoms in the triple layer are substituted such that the triple layer of the Laves phase building block becomes a slab of pure Nb, resulting in inhomogeneous changes in elasticity and a transition from crystallographic slip to a glide-and-shuffle mechanism. These findings open opportunities to purposefully tailor the plasticity of these topologically close-packed phases in the bulk by manipulating the interplanar spacing and local shear modulus of the fundamental crystal building blocks at the atomic scale
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|a Journal Article
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|a Laves phase building blocks
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|a Nb-Co alloys
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|a dislocations
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|a intermetallics
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|a plasticity
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|a Xie, Zhuocheng
|e verfasserin
|4 aut
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|a Zhang, Siyuan
|e verfasserin
|4 aut
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|a Guénolé, Julien
|e verfasserin
|4 aut
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|a Sun, Pei-Ling
|e verfasserin
|4 aut
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|a Meingast, Arno
|e verfasserin
|4 aut
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|a Alhassan, Amel
|e verfasserin
|4 aut
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|a Zhou, Xuyang
|e verfasserin
|4 aut
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|a Stein, Frank
|e verfasserin
|4 aut
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|a Pizzagalli, Laurent
|e verfasserin
|4 aut
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|a Berkels, Benjamin
|e verfasserin
|4 aut
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|a Scheu, Christina
|e verfasserin
|4 aut
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|a Korte-Kerzel, Sandra
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 24 vom: 01. Juni, Seite e2300586
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:35
|g year:2023
|g number:24
|g day:01
|g month:06
|g pages:e2300586
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|u http://dx.doi.org/10.1002/adma.202300586
|3 Volltext
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