钛合金作为高压容器在航空,航天事业中占有很重要的地位,随着科学技术的不断进步和发展,压力容器工作应力不断提高,安全系数不断降低,从而达到减轻重量的目的。外APOIIO飞船上所用的钛合金高压容器的设计安全系数只有1.5。作为容器而广泛采用的半球体热模压成形使瓶嘴与半球体构成整体。从而使容器安全可靠,工作应力也不断提高。但必须对钛合金的材质、性能加以控制。特别是要提高韧性,否则将导致容器低应力破 As a high pressure vessel, titanium alloy occupies an important position in the aviation and aerospace industry. With the continuous improvement and development of science and technology, the stress of pressure vessel is continuously increased and the safety factor is continuously reduced, so as to reduce the weight. The design safety factor of the titanium alloy high-pressure vessel used on the APOIIO spacecraft is only 1.5. Hemispherical hot-swaging, widely used as a container, allows the spout to be integrated with the hemisphere. So that the container is safe and reliable, work stress is also rising. However, the material and performance of the titanium alloy must be controlled. In particular, to improve the toughness, otherwise it will lead to container low stress break