双相钛合金材料疲劳问题研究进展  

Recent Progress in Fatigue Behaviour of Dual⁃Phase Titanium Alloys

作　　者：汤可可[1] 蔡肖 赵银盾 吴昊[1] 仲政[1] TANG Keke;CAI Xiao;ZHAO Yindun;WU Hao;ZHONG Zheng(School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学航空航天与力学学院,上海200092

出　　处：《力学季刊》2023年第3期491-511,共21页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金(11872278);上海市自然科学基金(21ZR1467200);中央高校基本科研业务费专项资金(22120220614)。

摘　　要：双相钛合金材料多样的微观组织结构特征,以及不可避免的内在缺陷,对材料疲劳裂纹萌生、扩展以及失效等多个阶段有着重要的影响.本文针对双相钛合金材料的疲劳问题,聚焦微观组织与几何缺陷效应,从试验和数值模拟两个角度,系统综述了双相钛合金材料在裂纹萌生以及扩展阶段的疲劳性能评估与寿命预测方面的最新研究成果.同时,针对微观细节丰富的片层组织,重点总结了片层组织与微观缺陷协同效应下的双态合金疲劳裂纹萌生问题,并对后续研究中的机遇与挑战进行了展望.The diverse microstructural characteristics of dual-phase titanium alloys,as well as their inevitably existing defects,have significant impacts on the stages of crack initiation,propagation,and failure of materials.This paper focuses on the fatigue issues of dual-phase titanium alloy materials,highlighting the effects of microstructure and geometric defects.From both experimental and numerical simulation perspectives,we systematically review the latest research achievements in fatigue performance evaluation and life prediction during the crack initiation and propagation stages of dual-phase titanium alloys.Furthermore,considering the complex lamellar microstructure,we specifically summarize the progress in the fatigue crack initiation of dual-phase titanium alloys under the combined effects of lamellar microstructures and micro-defects.Both opportunities and challenges in this area are discussed.

关 键 词：双相钛合金 微观组织 几何缺陷 片层组织 疲劳 

分 类 号：O346[理学—固体力学]