CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
The Effect of Milling Time on the Microstructural Characteristics and Strengthening Mechanisms of NiMo-SiC Alloys Prepared via Powder Metallurgy
Yang, C; Muransky, O; Zhu, HL; Thorogood, GJ; Avdeev, M; Huang, HF; Zhou, XT
2017
Source PublicationMATERIALS
ISSN1996-1944
Volume10Issue:4Pages:-
Subtype期刊论文
AbstractA new generation of alloys, which rely on a combination of various strengthening mechanisms, has been developed for application in molten salt nuclear reactors. In the current study, a battery of dispersion and precipitation-strengthened (DPS) NiMo-based alloys containing varying amounts of SiC (0.5-2.5 wt %) were prepared from Ni-Mo-SiC powder mixture via a mechanical alloying (MA) route followed by spark plasma sintering (SPS) and rapid cooling. Neutron Powder Diffraction (NPD), Electron Back Scattering Diffraction (EBSD), and Transmission Electron Microscopy (TEM) were employed in the characterization of the microstructural properties of these in-house prepared NiMo-SiC DPS alloys. The study showed that uniformly-dispersed SiC particles provide dispersion strengthening, the precipitation of nano-scale Ni3Si particles provides precipitation strengthening, and the solid-solution of Mo in the Ni matrix provides solid-solution strengthening. It was further shown that the milling time has significant effects on the microstructural characteristics of these alloys. Increased milling time seems to limit the grain growth of the NiMo matrix by producing well-dispersed Mo2C particles during sintering. The amount of grain boundaries greatly increases the Hall-Petch strengthening, resulting in significantly higher strength in the case of 48-h-milled NiMo-SiC DPS alloys compared with the 8-h-milled alloys. However, it was also shown that the total elongation is considerably reduced in the 48-h-milled NiMo-SiC DPS alloy due to high porosity. The porosity is a result of cold welding of the powder mixture during the extended milling process.
KeywordUltrafine-grained Copper Temperature Composite
DOI10.3390/ma10040389
WOS KeywordULTRAFINE-GRAINED COPPER ; TEMPERATURE ; COMPOSITE
Indexed BySCI
Language英语
WOS IDWOS:000402843800064
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28859
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. The Effect of Milling Time on the Microstructural Characteristics and Strengthening Mechanisms of NiMo-SiC Alloys Prepared via Powder Metallurgy[J]. MATERIALS,2017,10(4):-.
APA Yang, C.,Muransky, O.,Zhu, HL.,Thorogood, GJ.,Avdeev, M.,...&Zhou, XT.(2017).The Effect of Milling Time on the Microstructural Characteristics and Strengthening Mechanisms of NiMo-SiC Alloys Prepared via Powder Metallurgy.MATERIALS,10(4),-.
MLA Yang, C,et al."The Effect of Milling Time on the Microstructural Characteristics and Strengthening Mechanisms of NiMo-SiC Alloys Prepared via Powder Metallurgy".MATERIALS 10.4(2017):-.
Files in This Item:
File Name/Size DocType Version Access License
The Effect of Millin(15670KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, C]'s Articles
[Muransky, O]'s Articles
[Zhu, HL]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, C]'s Articles
[Muransky, O]'s Articles
[Zhu, HL]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, C]'s Articles
[Muransky, O]'s Articles
[Zhu, HL]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: The Effect of Milling Time on the Microstructural Characteristics and Strengthening Mechanisms of NiMo-SiC Alloys Prepared via Powder Metallurgy.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.