高应力诱导型钛合金压缩蠕变研究现状及进展  

Research Progress of High Stress Induced Compression Creep of Titanium Alloys

作　　者：陆嘉飞 淡振华 陈博文[1,2] 董月成 张爱峰 常辉[1,2] 周廉 LU Jiafei;DAN Zhenhua;CHEN Bowen;DONG Yuecheng;ZHANG Aifeng;CHANG Hui;ZHOU Lian(College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China;Tech Institute for Advanced Materials,Nanjing Tech University,Nanjing 210009,China;China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[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

出　　处：《中国材料进展》2019年第11期1074-1081,共8页Materials China

基　　金：国家国际科技合作专项项目(2015DFA51430);海洋装备用金属材料及其应用国家重点实验室开放基金项目(SKLMEA-K201806);国防基础科研计划项目(JCKY08414C020)

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。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.

关 键 词：钛合金 扩散控制型蠕变 高应力诱导型压缩蠕变 压缩蠕变 蠕变机理 

分 类 号：TG146.23[一般工业技术—材料科学与工程]