一、前言 海洋占地球表面积的四分之三,海洋底部有无数的宝藏有待勘探和开发,因失事而坠入海底的飞机和沉没的船只需要探寻和打捞,越来越多的海底设施要进行及时的检测和维护。 我国有漫长的海岸线,面临辽阔的海洋,有丰富的海底资源。要开发海底矿物资源和进行海底科学考察,必须要有深潜器和建造深潜器用的金属材料。为了弄清国外潜艇和深潜器用钛合金的研究和使用情况,我 I. INTRODUCTION Oceans account for three-quarters of the surface area of ​​the Earth. There are numerous treasures at the bottom of the ocean to be explored and exploited. Planes and sunk ships that crashed into the sea due to crashes need to be explored and retrieved, and more and more undersea facilities are underway Timely testing and maintenance. My country has a long coastline, facing vast seas and rich seabed resources. To develop the seabed mineral resources and undersea scientific expeditions, there must be a deep submersible and the construction of metal materials for deep submersibles. In order to understand the foreign submarines and submarines with titanium alloy research and usage, I