高应力诱导型钛合金压缩蠕变研究现状及进展-中国材料进展

文章信息/Info

Title:: Research Progress of High Stress Induced Compression Creep of Titanium Alloys

作者:: 陆嘉飞1; 2; 淡振华1; 2; 陈博文1; 2; 董月成1; 2; 张爱峰3; 常辉1; 2; 周廉1; 2; （1.南京工业大学材料科学与工程学院，江苏南京210009）（2.南京工业大学新材料研究院，江苏南京210009）（3.中船重工第七○二研究所，江苏无锡214082）

Author(s):: LU Jiafei1; 2; DAN Zhenhua1; 2; CHEN Bowen1; 2; DONG Yuecheng1; 2; ZHANG Aifeng3; CHANG Hui1; 2; ZHOU Lian1; 2; (1.College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China) (2.Tech Institute for Advanced Materials, Nanjing Tech University, Nanjing 210009, China) （3.China Ship Scientific Research Center, Wuxi 214082, China）

Keywords:: titanium alloys; diffusion-controlled creep; high stress induced compression creep; compression creep; creep mechanism

摘要:: 围绕钛合金的高温拉伸蠕变、室温拉伸蠕变及室温压缩蠕变研究成果，对钛合金的压缩蠕变行为及机理进行了综述，并介绍了钛合金室温压缩蠕变和高温拉伸蠕变的区别。基于对钛合金蠕变后微观组织的观察和分析，比较了扩散控制型蠕变过程中涉及的主要机理（如钛合金室温蠕变过程中的位错运动、饱和蠕变现象等），指出了在钛合金室温蠕变过程中存在应力阈值，分析了高应力诱导型钛合金室温蠕变机理。同时针对我国深海装备用钛合金的压缩蠕变行为研究中的主要问题及难点进行了概述及分析。

Abstract:: Based on the research achievements of tensile creep at elevated temperature, tensile creep and compression creep at room temperature, this article reviews the behavior and mechanism of compression creep of titanium alloys. The differences between creep at room temperature and elevated temperature are also introduced. Based on the observation and analysis on microstructure after creep, the main mechanism involved in the diffusion-controlled creep process, such as dislocation movement, saturated creep and so on, are compared. It is pointed out that there is a stress threshold in the room temperature creep of titanium alloys. And the high stress induced compression creep mechanism of titanium alloys at room temperature is also analyzed. Meanwhile, the main problems and difficulties on the compression creep of deepsea equipment titanium alloys are overviewed and analyzed.