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题名:
The Effect of Grain Size and Dislocation Density on the Tensile Properties of Ni-SiCNP Composites During Annealing
作者: Yang, C; Huang, HF; Thorogood, GJ; Jiang, L; Ye, XX; Li, ZJ; Zhou, XT
刊名: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
出版日期: 2016
卷号: 25, 期号:3, 页码:726—733
关键词: FLINAK SALT ENVIRONMENTS ; HALL-PETCH RELATION ; NANOCRYSTALLINE MATERIALS ; MICROCRACK FORMATION ; MILLING TIME ; MICROSTRUCTURE ; CORROSION ; BEHAVIOR ; ALLOYS ; RECRYSTALLIZATION
DOI: 10.1007/s11665-016-1938-2
通讯作者: Huang, HF ; Zhou, XT (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, 2019 Jialuo Rd, Shanghai 201800, Peoples R China.
文章类型: 期刊文献
英文摘要: The grain size refinement, enhancement of mechanical properties, and static recrystallization behavior of metallic nickel-silicon carbide nano-particle (Ni-3wt.%SiCNP) composites, milled for times ranging from 8 to 48 h have been examined. One set of Ni-SiCNP composite samples were annealed at 300 A degrees C for 250 h, while the other set of samples were maintained at room temperature for control purposes (reference). The electron backscatter diffraction results indicate that the grain size of the annealed Ni-SiCNP composite was refined due to grain restructuring during static recrystallization. The x-ray diffraction results indicate that low-temperature annealing effectively reduced the density of dislocations; this can be explained by the dislocation pile-up model. Additionally, the tensile tests indicated that the annealed Ni-SiCNP composite had a significant increase in strength due to an increase of the Hall-Petch strengthening effect with a slight increase in the total elongation. The decrease of dislocation pile-up in the grain interiors and the increase in grain boundary sliding are assumed to be the main mechanisms at play. The relationship between the microstructural evolution and the variation of tensile properties is examined in this study.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000372309100002
ISSN号: 1059-9495
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25863
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,Huang, HF,Thorogood, GJ,et al. The Effect of Grain Size and Dislocation Density on the Tensile Properties of Ni-SiCNP Composites During Annealing[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2016-01-01,25(3):726—733.
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