Effect of Gauge Size on Tensile Properties of Nano-nickel
[1]XU Weichang,DAI Pinqiang.Effect of Gauge Size on Tensile Properties of Nano-nickel[J].Journal of Zhengzhou University (Engineering Science),2009,30(01):48-52.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30
Number of periods:
2009 01
Page number:
48-52
Column:
Public date:
1900-01-01
- Title:
- Effect of Gauge Size on Tensile Properties of Nano-nickel
- Keywords:
- nano-nickel; mechanical properties; shear tape; electrodeposition; Grain size distribution
- CLC:
- -
- DOI:
- -
- Abstract:
- Nano-nickel with an average grain size of 27.2 nm and a wide grain size of 5~120 nm was prepared by direct current deposition. The effect of gauge size on the mechanical properties of nano-nickel was studied by unidirectional tensile experiment at room temperature. It is found that the yield strength of nano-nickel increases with the increase of the gauge aspect ratio (r), the elastic and plastic strain decrease with the increase of r, and the gauge size has no effect on the shear fracture behavior in tension. Through TEM’s observation of the structure of tensile fracture and shear band, it is found that the average grain size after the deformation of nano-nickel is significantly coarsed compared with the plating state, and the shear band is caused by further concentrated plastic deformation of the grain area that is first coarsed during the deformation process, and the grain on the shear band is elongated in a specific direction, and the straight grain boundary corresponds to the parallel line observed by SEM.
- References:
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Last Update:
1900-01-01