Deformation behavior of amorphous composites containing crystalline nickel in the supercooled liquid region
Deformation behavior of amorphous composites containing crystalline nickel in the supercooled liquid region
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DOI：
10.1016/j.msea.2006.02.283
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发表时间：
2007-03
期刊：
影响因子：
6.4
通讯作者：
M. Huh;E. Park;Hyun-Jong Kim;J. Bae
中科院分区：
文献类型：
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作者：
M. Huh;E. Park;Hyun-Jong Kim;J. Bae
包含不同体积分数的结晶镍的非晶复合材料是通过在非晶粉末上化学镀镍以及随后对所涂覆的粉末进行放电等离子烧结来生产的。变形行为是通过过冷液体区域温度下的单轴压缩试验确定的。 723K 时，均匀塑性流动是主要变形，而 733K 时，非均匀变形占主导地位。有限元计算表明，降低软镍中的应变集中可以抵抗复合材料中宏观裂纹的形成。
Amorphous composites comprising various volume fractions of crystalline nickel were produced by means of electroless coating of nickel on the amorphous powder and subsequent spark plasma sintering of the coated powder. The deformation behavior was determined by the uniaxial compression test at temperatures in the supercooled liquid region. Homogeneous plastic flow was the dominant deformation at 723K, while inhomogeneous deformation prevailed at 733K. Finite elements calculations disclose that reducing the strain concentration in soft nickel provides the resistance against the formation of macro-cracks in the composites.