[001]取向 Ni 单晶、NiCo、NiCoCr 和NiCoCrFe 单晶合金的力学性能

Cheng Ai, Linyang Zhang, Zhijun Wang, Min Guo, Taiwen Huang, Lin Liu

科研成果: 期刊稿件文章同行评审

摘要

In this paper, the room temperature compression and tensile properties, microhardness and elastic modulus of face center cubic (FCC) structure Ni, NiCo, NiCoCr and NiCoCrFe single crystals with [001] orientation were studied, and the influencing factors of solid solution strengthening degrees of FCC structure multicomponent single crystals were also explored. The results show that the orders of compression yield strength σ0.2, c, yield strength σ0.2, t, tensile strength, microhardness and elastic modulus of Ni, NiCo, NiCoCr and NiCoCrFe single crystals are all NiCoCr>NiCoCrFe>NiCo>Ni. The lattice constants of Ni, NiCo, NiCoCr and NiCoCrFe single crystals increases with increasing number of principal elements, which indicates that the lattice constant is not the major influencing factor of solid solution strengthening degrees of [001] orientation multi-component single crystals. Meanwhile, NiCoCr alloy has the largest atomic radius difference, electronegativity difference and elastic modulus, and the lowest stacking fault energy, i.e. the strengths and hardnesses of FCC structure multi-component alloys with [001] orientation are positively correlated with atomic radius difference, electronegativity difference and elastic modulus, and inversely correlated with stacking fault energy. Moreover, based on lattice friction stress and intrinsic residual strain of FCC structure multi-component single crystals with [001] orientation and polycrystals, a solid solution strengthening model was built.

投稿的翻译标题Mechanical properties of Ni, NiCo, NiCoCr and NiCoCrFe single crystals with [001] orientation
源语言繁体中文
页(从-至)167-180
页数14
期刊Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
35
1
DOI
出版状态已出版 - 1月 2025

关键词

  • atomic radius difference
  • elastic modulus
  • multi-component single crystals
  • solid solution strengthening
  • solid solution strengthening model
  • stacking fault energy

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