Acta Metallurgica Sinica (English Letters) ›› 1998, Vol. 11 ›› Issue (1): 29-32.

• Research paper • Previous Articles     Next Articles

THE TYPE II DEFECT IN 18R MARTENSITE IN A Cu-Zn-Al ALLOY

J. X. Zhang; Y. F. Zheng;W. Cai and L.C.Zhao(School of Materials Science and Engineering, Harbin Institute of Technology Harbin 150001, China)(Laboratory of Atomic Imaging of Solids, Institute of Metal Research, The Chinese Academy of Sciences,Shenyang 110015, China)   

  • Received:1998-02-25 Revised:1998-02-25 Online:1998-02-25 Published:2009-10-10

Abstract: Type H defect in 18R martensite in a Cu-Zn-Al alloy has been studied by high resolution electron microscopy. It was found that Type H defect is not fault internal to martensite plate; rather,it is a stack of plates A and C. The rare observation of Type H defect is considered to be due to the fact that thc slice is too thin to exist for self-accommodation.

Key words: shape memory alloy, Cu-based alloy, defect