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On the origin of strengthening mechanisms in Ni-Mo alloys prepared via powder metallurgy
Yang, C; Muransky, O; Zhu, HL; Thorogood, GJ; Huang, HF; Zhou, XT
2017
Source PublicationMATERIALS & DESIGN
ISSN0264-1275
Volume113Pages:223-231
Subtype期刊论文
AbstractA new class of materials, which rely on the dispersion strengthening of SiC particles in addition to precipitation strengthening by nano-precipitates is being developed for the application in molten salt nuclear reactors. A battery of dispersion and precipitation strengthened (DPS) NiMo-based alloys containing varying amount of SiC (0.5-2.5 wt.%) was prepared via a mechanical alloying (MA) route followed by spark plasma sintering (SPS), rapid cooling, high-temperature annealing and water quenching. Lab X-ray Diffraction (XRD), Electron Back Scattering Diffraction (EBSD), and Transmission Electron Microscopy (TEM) were employed in the microstructural characterization of this newtype of alloys. It is shown that the NiMo matrix of these alloys is effectively reinforced by dispersion of SiC from the initial powder mixture and nano-Ni3Si precipitates, which precipitated during the sintering/annealing process. Furthermore, the matrix is strengthened by solid-solution of Mo in Ni. As a result, these newly developed NiMo alloys take advantage of dispersion, precipitation and solid solution strengthening, which leads to their superior mechanical properties. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordPowder Metallurgy Dps Strengthening Spark Plasma Sintering Transmission Electron Microscopy Electron Backscatter Diffraction Molten Salt Reactor
DOI10.1016/j.matdes.2016.10.024
Indexed BySCI
Language英语
WOS IDWOS:000389142800026
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27398
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Yang, C,Muransky, O,Zhu, HL,et al. On the origin of strengthening mechanisms in Ni-Mo alloys prepared via powder metallurgy[J]. MATERIALS & DESIGN,2017,113:223-231.
APA Yang, C,Muransky, O,Zhu, HL,Thorogood, GJ,Huang, HF,&Zhou, XT.(2017).On the origin of strengthening mechanisms in Ni-Mo alloys prepared via powder metallurgy.MATERIALS & DESIGN,113,223-231.
MLA Yang, C,et al."On the origin of strengthening mechanisms in Ni-Mo alloys prepared via powder metallurgy".MATERIALS & DESIGN 113(2017):223-231.
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