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首页> 外文会议>World Conference on Titanium v.3; 20030713-20030718; Hamburg; DE >Wear of Ti-6Al-4V Alloy under Constant and Variable Fretting Conditions: Development of an Energy Wear Approach
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Wear of Ti-6Al-4V Alloy under Constant and Variable Fretting Conditions: Development of an Energy Wear Approach

机译：恒定和可变微动条件下Ti-6Al-4V合金的磨损：能量磨损方法的发展

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摘要

Fretting is defined as a small displacement oscillatory motion between two solids in contact. Depending on the loading conditions (displacement amplitude, normal force), fretting may cause damage by surface fatigue and wear induced by debris formation. Crack nucleation and crack propagation can conveniently be predicted and quantified through respectively multiaxial fatigue descriptions and boundary element methods. Although, wear induced by debris formation is clearly less formalized. This study focuses on the wear quantification of a plain Ti-6Al-4V cylinder / plane contact under gross slip fretting conditions (i.e. full sliding is operating through the interface). A modified friction energy wear approach is transposed to quantify the wear extension as a function of the friction energy dissipated in the interface and a normalized sliding imposed through the interface. Validated under a wide range of loading conditions this wear model allows to define a normalized wear master curve of Ti-6Al-4V under fretting wear condition. The stability of the model is then compared to variable sliding amplitude conditions.
机译：微动定义为接触的两个固体之间的小位移振荡运动。根据载荷条件（位移幅度，法向力），微动可能会由于表面疲劳和碎屑形成而引起的磨损而造成损坏。可以分别通过多轴疲劳描述和边界元方法方便地预测和量化裂纹形核和裂纹扩展。虽然，由碎屑形成引起的磨损显然没有形式化。这项研究的重点是在总体滑动微动条件下（即通过界面进行完全滑动）对普通Ti-6Al-4V圆柱/平面接触的磨损进行量化。修改后的摩擦能量磨损方法被转换为根据在界面中耗散的摩擦能量和通过界面施加的归一化滑动的函数来量化磨损扩展。在广泛的负载条件下进行了验证，该磨损模型可以定义微动磨损条件下的Ti-6Al-4V归一化磨损主曲线。然后将模型的稳定性与可变滑动幅度条件进行比较。

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