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Ti48 Cu42 Ni10表面的凸起程度最大,Ti53 Cu42 Ni5的凸起程度略小,Ti58 Cu42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。
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 cor-rection algorithm method,analyze surface morphology of indentation and mechanical parameter of alloy,re-spectively.Results demonstrating that the plasticity of alloys decreases with the increasing of Ni content,name-ly,plasticity increases.Pile-up phenomenon of Ti48 Cu42 Ni10 is slightly apparent than that of Ti53 Cu42 Ni5 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.
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