1. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
2. Armaments Tendering Center, Armaments Department of PLA Navy, Beijing 100071, China
3. College of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
et al.
Warship structural steels is the largest used structure materials in large and medium-sized surface vessels and submarine equipment, its service performance and structural safety severely affect safety and technical performance of warships and personnel safety. Meanwhile, warship structural steel research presents characteristics of long research and development cycle,high investment costs, and multiple research & development processes,the ability of systematically developing structural steel materials is an important indicator to evaluating comprehensive industrial strength of a country. The present work first clarifies the importance of the environment applicability of structural steels to extreme service environments by analyzing the typical service environment. Polar environment, as a typical extreme environment that leads to failure of warship and equipment, is used as a typical example to analyze the typical failure problems, then this paper proposes design inputs of the safety and environmental applicability of warship structure steel. On this basis, taking the development of United States navy ship structural steel as an example, this review analyzes the current design ideas for steel used in warship structures, and sorts out the development and strengthening and toughening ideas for warship structural steel. By comparing the current development of warship structural steel of United States,Russia,France, United Kingdom, and Japan, this review analyzes the development history, research patterns, current development status, and bottlenecks, then compares and analyzes the lowtemperature performance assessment indicators of warship structural steel. Finally, combining the new characteristics of current material develop modes, the future trend and direction of warship structural steel development are proposed, providing a reference for the development of warship structural steel in China.