Acta Metallurgica Sinica (English Letters) ›› 1992, Vol. 5 ›› Issue (3): 193-198.

• Research paper • Previous Articles     Next Articles

DRY SLIDING WEAR OF Cu-BASED SHAPE MEMORY ALLOY

WANG Hongwei Dalian University of Technology,Dalian,ChinaWU Wangzi Shenyang Institute of Technology,Shenyang,ChinaWANG Fengting YANG Dazhi Dalian University of Technology,Dalian,China   

  • Received:1992-06-25 Revised:1992-06-25 Online:1992-06-25 Published:2009-10-10

Abstract: The wear of Cu-based CuZnAl shape memory alloys under dry sliding against steel was found to be plasticity-dominated,with adhesion and delamination being the two main mecha- nisms.Adhesion was found to be accompanied by metal transfer.TEM observation on tensile test of thin foil showed that the stress-induced martensitic transformation occurred from β-phase in the vicinity of pre-existing microcracks.The blunt effect of crack tips may be proposed to explain the wear of CuZnAl shape memory alloy due to preferential orientation reaction of variants in martensite and stress-induced martensitic transformation in β-phase.

Key words: CuZnAl allov shape memory alloy, wear, martensitic transformation