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题名:
The Key Role of Ball Milling Time in the Microstructure and Mechanical Property of Ni-TiCNP Composites
作者: Zhou, XL; Huang, HF; Xie, RB; Yang, C; Li, ZJ; Jiang, L; Ye, XX; Xu, HJ
刊名: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
出版日期: 2016
卷号: 25, 期号:12, 页码:5280-5288
关键词: composite materials ; electron microscopy ; mechanical properties ; microstructure ; powder metallurgy ; sintering
DOI: 10.1007/s11665-016-2403-y
通讯作者: Huang, HF (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
文章类型: 期刊论文
英文摘要: Titanium carbide nanoparticle-reinforced nickel-based alloys (Ni-TiCNP composites) with ball milling time ranging from 8 to 72 h were prepared by ball milling and spark plasma sintering. Transmission electron microscopy (TEM) and scanning electron microscopy equipped with electron backscatter diffraction were used to characterize the microstructures. Their hardness and tensile properties were measured using the Vickers pyramid method and tensile tests. TEM results showed that a slight coarsening of TiCNP occurred during the ball milling process. The grain sizes of the Ni-TiCNP composites with various ball milling times were different, but they were all much smaller than those of the pure Ni. In all cases, the Ni-TiCNP composites showed higher strengths and hardness values than the unreinforced pure nickel. Furthermore, the strength of the Ni-TiCNP composites increased initially and then decreased as a function of ball milling time. The maximum strengths occurred in the 24-h ball milling sample, which presented the lowest average grain size. The Hall-Petch strengthening was suggested to be the main reason responsible for such variations in mechanical properties. Additionally, the elongation percentage of the Ni-TiCNP composites decreased gradually with ball milling time. This may be caused by the change of microvoids in the composite as the ball milling time varies, which is also related to their fracture behavior.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000389272500017
ISSN号: 1059-9495
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26655
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:
Zhou, XL,Huang, HF,Xie, RB,et al. The Key Role of Ball Milling Time in the Microstructure and Mechanical Property of Ni-TiCNP Composites[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2016-01-01,25(12):5280-5288.
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文件名: The Key Role of Ball Milling Time in the Microstructure and Mechanical Property of Ni-TiCNP Composites.pdf
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