Anomalous relationship between hardness and wear properties of a superelastic nickel–titanium alloy
Anomalous relationship between hardness and wear properties of a superelastic nickel–titanium alloy
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DOI：
10.1063/1.1646218
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发表时间：
2004-02
影响因子：
4
通讯作者：
L. Qian;Xudong Xiao;Qing Sun;Tongxi Yu
中科院分区：
文献类型：
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作者：
L. Qian;Xudong Xiao;Qing Sun;Tongxi Yu
利用摩擦压头研究了超弹性镍钛合金在不同温度下的显微磨损和硬度行为。发现耐磨性随着硬度的增加而急剧降低。基于简单接触理论对观察结果进行了分析，认为硬度随温度的增加主要是由于相变应力的增加，而耐磨性随温度的降低是由于奥氏体弹性模量的增加和可恢复的相变量的减少。
We have studied the behavior of microwear and hardness of a superelastic nickel–titanium alloy using a triboindenter at various temperatures. Wear resistance was found to anomalously decrease with an increase in hardness. The observations are analyzed based on simple contact theory which suggests that the increase of hardness with the temperature is mainly due to an increase in phase transition stress, while the decrease of wear resistance with the temperature is due to an increase of the austenite elastic modulus and a decrease of the amount of phase transition that can be recovered.