材料期刊网

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

金属学报(英文版)

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.

关键词: CuZnAl allov shape memory alloy , null , null