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一、前言 随着高速、高机动飞行器的发展,要求航空、航天飞行器结构件能在较高温度环境下具有良好的刚度、强度和绝热等性能。钎焊的不锈钢与钛合金蜂窝结构均能在300℃以上环境中工作,但钛的比重只为不锈钢的60％,钛蜂窝结构的比强度比相同结构形式的不锈钢蜂窝高50％左右,钛合金的导热系数比钢低50～60％,因此,选用钛合金蜂窝结构作各类飞行器的承载、绝热构件有助于提高飞行器的综合性能。美国在六十年代已对钎焊钛合金蜂窝壁
I. INTRODUCTION With the development of high-speed and high-maneuverable aircraft, the structural components of aviation and aerospace vehicles are required to have good properties of rigidity, strength and thermal insulation under higher temperature environment. Brazed stainless steel and titanium alloy honeycomb structure can work in the environment above 300 ℃, but the specific gravity of titanium is only 60% of stainless steel, the specific strength of titanium honeycomb structure is about 50% higher than the same structure of stainless steel honeycomb, titanium alloy Of the thermal conductivity is lower than the steel 50 ~ 60%, therefore, the selection of titanium alloy honeycomb structure for all types of aircraft bearing, insulation components help to improve the overall performance of the aircraft. The United States has brazed the titanium alloy honeycomb walls in the 1960s