中文摘要：

借助纳米压入测试方法，对Ti（58-x）Cu42Nix（x=0，5，10）合金进行测试，研究掺入不同含量Ni的Ti—Cu合金的纳米力学性能，采用压痕形成过程中塑性应变与总应变的比值来表征合金塑性。分别用Oliver—Pharr方法和基于压痕功修正算法对比分析实验结果，研究了压痕表面形态和合金力学参数。结果表明，随着Ti—Cu合金中Ni含量的增加，其塑性性能减弱，即弹性性能增强。在压入过程中Ti48Cu42Ni10表面的凸起程度最大，Ti53Cu42Ni5的凸起程度略小，Ti58Cu42凸起程度最小，且3种合金的耐磨性随着Ni含量的增加而变强。

英文摘要：

Based on nanoindentation, tests on Ti（58-x）Cu42Nix （x =0,5,10）were launched to investigate effect of Ni content on the nano-mechanical of TiCuNi alloy. Plastic strain-total strain ratios during nanoindentation process were adopted to characterize plasticity of alloy. Based on Oliver-Pharr method and indentation work correction algorithm method, analyze surface morphology of indentation and mechanical parameter of alloy, respectively. Results demonstrating that the plasticity of alloys decreases with the increasing of Ni content, namely, plasticity increases. Pile-up phenomenon of Ti48 Cu42 Ni10 is slightly apparent than that of Ti53 Cu42 Nix and Ti58 Cu42 is the one with the smallest pile-up. The relationship of wear resistance of these three alloys strengthened with the increasing of Ni content.