DRY SLIDING WEAR OF Cu-BASED SHAPE MEMORY ALLOY

Abstract

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

WANG Hongwei Dalian University of Technology,Dalian,ChinaWU Wangzi Shenyang Institute of Technology,Shenyang,ChinaWANG Fengting YANG Dazhi Dalian University of Technology,Dalian,China. DRY SLIDING WEAR OF Cu-BASED SHAPE MEMORY ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1992, 5(3): 193-198.

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DRY SLIDING WEAR OF Cu-BASED SHAPE MEMORY ALLOY

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