Journal ArticleDOI
Stabilizing nanostructures in metals using grain and twin boundary architectures
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TLDR
In this article, the authors discuss recent developments in the stabilization of nanostructured metals by modifying the architectures of their interfaces, including high and low-angle grain boundaries, twin boundaries, nanotwinned and nanolaminated structures, and gradient nanostructure.Abstract:
Forming alloys with impurity elements is a routine method for modifying the properties of metals. An alternative approach involves the incorporation of interfaces into the crystalline lattice to enhance the metal's properties without changing its chemical composition. The introduction of high-density interfaces in nanostructured materials results in greatly improved strength and hardness; however, interfaces at the nanoscale show low stability. In this Review, I discuss recent developments in the stabilization of nanostructured metals by modifying the architectures of their interfaces. The amount, structure and distribution of several types of interfaces, such as high- and low-angle grain boundaries and twin boundaries, are discussed. I survey several examples of materials with nanotwinned and nanolaminated structures, as well as with gradient nanostructures, describing the techniques used to produce such samples and tracing their exceptional performances back to the nanoscale architectures of their interfaces. The incorporation of structural defects, in particular of interfaces, into crystalline lattices results in enhanced material properties. In this Review, different types of boundaries and interfaces are discussed, including high- and low-angle grain boundaries, twin boundaries, nanotwinned and nanolaminated structures, and gradient nanostructures.read more
Citations
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Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys
Tao Yang,Yilu Zhao,Yang Tong,Zengbao Jiao,Jie Wei,J. X. Cai,Xiaodong Han,Da Chen,Alice Hu,Ji-Jung Kai,Kathy Lu,Y. Liu,C.T. Liu +12 more
TL;DR: A strategy to break this trade-off by controllably introducing high-density ductile multicomponent intermetallic nanoparticles (MCINPs) in complex alloy systems is reported, which offers a paradigm to develop next-generation materials for structural applications.
Journal ArticleDOI
Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation
Suihe Jiang,Hui Wang,Yuan Wu,Xiongjun Liu,Chen Honghong,Mengji Yao,Baptiste Gault,Dirk Ponge,Dierk Raabe,Akihiko Hirata,Mingwei Chen,Mingwei Chen,Yandong Wang,Zhaoping Lu +13 more
TL;DR: A counterintuitive strategy for the design of ultrastrong steel alloys by high-density nanoprecipitation with minimal lattice misfit, which enables a substantial reduction in cost compared to conventional maraging steels owing to the replacement of the essential but high-cost alloying elements cobalt and titanium with inexpensive and lightweight aluminium.
Journal ArticleDOI
Towards strength–ductility synergy through the design of heterogeneous nanostructures in metals
TL;DR: In this paper, the authors review recent advances in overcoming this tradeoff, by purposely deploying heterogeneous nanostructures in an otherwise single-phase metal, and advocate this broad vision to help guide future innovations towards a synergy between high strength and high ductility.
Journal ArticleDOI
Neutrophil-mediated anticancer drug delivery for suppression of postoperative malignant glioma recurrence
Jingwei Xue,Zekai Zhao,Lei Zhang,Lingjing Xue,Shiyang Shen,Yajing Wen,Zhuoyuan Wei,Lu Wang,Ling-Yi Kong,Hongbin Sun,Qineng Ping,Ran Mo,Can Zhang +12 more
TL;DR: It is shown that NEs carrying liposomes that contain paclitaxel (PTX) can penetrate the brain and suppress the recurrence of glioma in mice whose tumour has been resected surgically, and this NE-mediated delivery of drugs efficiently slows the recurrent growth of tumours.
Journal ArticleDOI
Mechanical properties of high-entropy alloys with emphasis on face-centered cubic alloys
TL;DR: In this paper, the authors review the principal mechanical properties of multi-principal element alloys with emphasis on the face-centered cubic systems, such as the CrCoNi-based alloys, and suggest their favorable mechanical properties and ease of processing by conventional means suggest extensive utilization in many future structural applications.
References
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Journal ArticleDOI
The Deformation and Ageing of Mild Steel: III Discussion of Results
TL;DR: In this paper, an attempt is made to explain the observed phenomena in the yielding and ageing of mild steel, described in two previous papers, in the general terms of a grain-boundary theory.
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Mechanical properties of nanocrystalline materials
TL;DR: The mechanical properties of nanocrystalline materials are reviewed in this paper, with emphasis on their constitutive response and on the fundamental physical mechanisms, including the deviation from the Hall-Petch slope and possible negative slope, the effect of porosity, the difference between tensile and compressive strength, the limited ductility, the tendency for shear localization, fatigue and creep responses.
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The deformation of plastically non-homogeneous materials
TL;DR: The geometrically necessary dislocations as discussed by the authors were introduced to distinguish them from the statistically storages in pure crystals during straining and are responsible for the normal 3-stage hardening.
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Nanostructured materials: basic concepts and microstructure☆
TL;DR: In this article, the authors summarize the basic physical concepts and the microstructural features of equilibrium and non-equilibrium nanostructured materials (NsM) and make an attempt to summarize their properties.