Machining operations on titanium and its alloys have always been a challenge in the design of compressor blade in the jet engine which undergo profound stress during impact of debris and affects the life span of both static and rotary blades. Titanium grade 5 alloy is used to resist the creep and fatigue due to the thermal expansion and sudden impact including bird strike. However, machining them is difficult. An attempt was made to mitigate the temperature during drilling of Ti-6Al-4V by adopting cryogenic coolants LN₂, CO₂ and a novel approach of coconut oil under varying cutting speed and feed rates. LN₂ provided 17 and 55% reduction in temperature over CO₂ and coconut oil condition respectively. Employing the optimum machining procedure for Titanium alloy can reduce the weight of the aircraft by mounting the titanium alloy at the leading edge of the carbon fiber reinforced plastic composite blades.

中文翻译：

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使用先进材料对喷气发动机中的5级钛合金压气机叶片进行表征，以产生最佳推力

钛及其合金的机加工一直是喷气发动机压气机叶片设计中的一个挑战，该压气机叶片在碎屑撞击期间会承受很大的应力，并会影响静叶片和旋转叶片的使用寿命。钛5级合金用于抵抗由于热膨胀和突然撞击（包括鸟击）引起的蠕变和疲劳。但是，加工它们很困难。试图通过采用低温冷却剂LN ₂，CO ₂和一种新颖的椰子油在降低切削速度和进给速率的情况下降低Ti-6Al-4V钻孔过程中的温度。LN _2的温度比CO ₂降低了175％，降低了55％和椰子油状况。对钛合金采用最佳加工程序可以通过将钛合金安装在碳纤维增强塑料复合材料叶片的前缘来减轻飞机的重量。