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Nanocrystallization of metallic glasses
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In this article, the authors summarized the current status of research in the field of nanocrystallization of metallic glasses especially highlighting the influence of glass composition and conditions of devitrification process on size, morphology and composition of crystallization products.Abstract:
The paper summarizes briefly the current status of research in the field of nanocrystallization of metallic glasses especially highlighting the influence of glass composition and conditions of devitrification process on size, morphology and composition of crystallization products. Conventional crystallization creates a nanocrystalline structure only in glasses with particular compositions. Any metallic glass, decomposing in a primary crystallization process, can be converted into partially nanocrystalline material using non-conventional methods of heat treatment, e.g. high-temperature or low-temperature nanocrystallization. Temperature of devitrification process influences sizes and compositions of crystallization products for any volume fraction of crystalline phase. The change of crystallites sizes can change their morphologies. The change of a crystallite composition usually affects the lattice parameter but also can result in a change of crystallographic structure of the same phase or in formation of another phase. Composition of primary crystallites is dependent on temperature as well as on time of devitrification process. The lower the annealing temperature and the shorter the annealing time (smaller crystallites) the more the crystallites composition differs from the equilibrium state.read more
Citations
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Martensitic phase transformations in nanocrystalline NiTi studied by TEM
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The effect of compression and tension on shear-band structure and nanocrystallization in amorphous Al90Fe5Gd5: a high-resolution transmission electron microscopy study
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TL;DR: In this article, the effect of bending at room temperature on the microstructure of amorphous Al 90 Fe 5 Gd 5 was investigated using both conventional and high-resolution transmission electron microscopy (HRTEM).
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Review of shot peening processes to obtain nanocrystalline surfaces in metal alloys
S. Bagheri,Mario Guagliano +1 more
TL;DR: In this article, the importance of shot peening process to obtain nanocrystal surface is presented with an inclusive clarification of actual state of the art, and the available microstructural characteristics of thin layers obtained with different processes are depicted.
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Mechanical, electrochemical and tribological properties of nano-crystalline surface of 304 stainless steel
X.Y. Wang,Dongyang Li +1 more
TL;DR: In this paper, the tribological behavior and related properties of a nano-crystalline surface of 304 stainless steel (304SS) produced by a sandblasting and annealing process were investigated using micro- and nano-mechanical probes, a scanning Kelvin probe, an electrochemical system and a tribometer.
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Bimodal Nanocrystallization of NiTi Shape Memory Alloy by Laser Shock Peening and Post-deformation Annealing
TL;DR: In this paper, surface nanocrystallization of NiTi intermetallic alloy by a novel method is reported, where the NiTi alloy is processed by laser shock peening (LSP) and controlled annealing.
References
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