Chinese Science Bulletin

, 46:1837 | Cite as

TEM observation of oxidation of CuZnAlMnNi shape memory alloy

  • Yujun Bai
  • Chengwei Lu
  • Guili Geng
  • Longwei Yin


The atmospheric oxidation of a quenched CuZnAlMnNi alloy after ion-polishing was examined by transmission electron microscopy (TEM). It was found that a lot of oxide grains with various sizes yield homogeneously on the surface of the alloy after exposure at room temperature for 90 d. The grains mainly form along the planes of stacking fault, meanwhile, they can also be observed at the stacking fault tetrahedrals or around the dislocation lines. The formation of the oxides gives rise to the reduction of the stacking faults, and even complete disappearance in some zones, which is partly responsible for the decrement of shape memory effect (SME) of the alloy quenched during long-term holding at room temperature.


shape memory alloy oxidation stacking fault tetrahedral dislocation line 


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Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Yujun Bai
    • 1
  • Chengwei Lu
    • 1
  • Guili Geng
    • 2
  • Longwei Yin
    • 2
  1. 1.Mechanical DepartmentShandong University of Science and TechnologyJi’nanChina
  2. 2.Materials Science and EngineeringShandong UniversityJi’nanChina

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