Acta Metallurgica Sinica (English Letters) ›› 1997, Vol. 10 ›› Issue (5): 425-429.

• Research paper • Previous Articles     Next Articles

ON THE A/D TYPE TWIN BOUNDARY IN 18R MARTENSITE OF A Cu-Zn-Al ALLOY

J.X. Zhang; YF. 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, Chinese Academy of Sciences,Shenyang 110015, China )   

  • Received:1997-10-25 Revised:1997-10-25 Online:1997-10-25 Published:2009-10-10

Abstract: The A/D type twin boundary in a Cu-Zn-Al shape memory alloy appears curved under TEM and shows impularly sermted steps under HREM Crystallogmphic analysis shows that the macroscopic curve results hem non-selfaccommodation of the boundary, the deviation from exact twin orientation and a pwtrential orientation for lower boundary enerpy.

Key words: shape memory alloy, Cu-based alloy, twin boundary