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题名:
On the origin of strengthening mechanisms in Ni-Mo alloys prepared via powder metallurgy
作者: Yang, C; Muransky, O; Zhu, HL; Thorogood, GJ; Huang, HF; Zhou, XT
刊名: MATERIALS & DESIGN
出版日期: 2017
卷号: 113, 页码:223-231
关键词: Powder metallurgy ; DPS strengthening ; Spark plasma sintering ; Transmission electron microscopy ; Electron backscatter diffraction ; Molten salt reactor
DOI: 10.1016/j.matdes.2016.10.024
文章类型: 期刊论文
英文摘要: A 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000389142800026
ISSN号: 0264-1275
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27398
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
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,2017-01-01,113:223-231.
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