众所周知,钛合金具有引人注目的优点,如比强度高,热强度高,耐蚀性好等。然而,钛合金其致命的缺点是硬度较低, 抗磨性较差。因此,在当代航空发动机中,它的应用便受到了一定的限制,它多用来制造机匣、叶片、气压机盘等不受摩擦载荷的零件。它不能用来制造转轴、齿轮、连杆销等要承受摩擦载荷的零件。对于后者,仍沿用传统的工艺制造,即选用合金钢,经过渗碳或氮化,以达到抗磨的要求。 能否改变这种现状?假如利用某种方法,大幅度地提高钛合金的表面硬度和抗磨性,则许多承受摩擦载荷的零件,就可以不用合金钢而改用钛合金了。这样,就会显著地减轻发动 As we all know, titanium alloy has attractive advantages, such as high specific strength, high hot strength, corrosion resistance and so on. However, the deadly drawbacks of titanium alloys are lower hardness and poorer wear resistance. Therefore, in contemporary aeroengines, its application has been subject to certain restrictions, it is often used to make the receiver, blades, air compressor disk and other parts without friction load. It can not be used to make parts such as spindles, gears, connecting rod pins, etc. subject to frictional loads. For the latter, still using the traditional manufacturing process, that is, the choice of alloy steel, after carburizing or nitriding, in order to achieve the anti-wear requirements. Can change the status quo? If the use of a method to substantially improve the surface hardness and wear resistance of titanium, many of the parts subjected to friction load, you can use instead of alloy steel titanium. In this way, it will significantly reduce the launch