Mechanical properties of Ti–4.5Al–3V–2Mo–2Fe and possibility for healthcare applications
Mechanical properties of Ti–4.5Al–3V–2Mo–2Fe and possibility for healthcare applications
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DOI：
10.1016/j.msec.2004.12.012
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
B. Gunawarman;M. Niinomi;T. Akahori;J. Takeda;H. Toda
中科院分区：
文献类型：
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作者：
B. Gunawarman;M. Niinomi;T. Akahori;J. Takeda;H. Toda
对 Ti-4.5Al-3V-2Mo-2Fe 的机械性能进行了研究，Ti-4.5Al-3V-2Mo-2Fe 是一种成本相对较低的钛合金，最初设计用于结构应用（特别是航空航天应用）。对合金进行各种固溶处理温度（退火温度）和冷却速度的热处理。然后利用热处理合金的机械性能来判断该合金在轮椅等医疗设备中的实际应用前景。 Ti-4.5Al-3V-2Mo-2Fe 的机械性能受固溶处理或冷却速率的影响很大，并且由于微观结构的变化而发生变化。在 α+β 场温度下进行单一退火的合金具有非常高的疲劳比 (0.80–0.85) 和高比强度 (210–260 MPa/g cm−3) 以及适度的断裂韧性 (JIC=25–35 kN/m)。这种疲劳率和比强度的平衡优于现有的轮椅材料。因此，从机械性能的角度来看，Ti-4.5Al-3V-2Mo-2Fe在医疗保健应用方面具有很大的潜力。
The mechanical properties of Ti–4.5Al–3V–2Mo–2Fe, a relatively low cost titanium alloy originally designed for structural applications (especially for aerospace applications), were investigated. The alloy was subjected to heat treatments with various solution treatment temperatures (annealing temperature) and cooling rates. The mechanical properties of the heat-treated alloys were then used in order to judge the prospects of practical usage of the alloy for healthcare equipment such as wheelchairs. The mechanical properties of Ti–4.5Al–3V–2Mo–2Fe are highly affected by either solution treatment or cooling rate, and they change as a result of the change in the microstructure. The alloy single annealed at temperature in the α+β field has very high fatigue ratio (0.80–0.85) and high specific strength (210–260 MPa/g cm−3) with a modest fracture toughness (JIC=25–35 kN/m). This balance of fatigue ratio and specific strength is better than that of the existing wheelchair materials. Thus, from the point of view of mechanical properties, Ti–4.5Al–3V–2Mo–2Fe has high potential to be used for healthcare applications.