锻造工艺对航空用钛合金微观组织演变及力学性能的影响  

Effect of forging process on microstructure evolution and mechanical properties of titanium alloy for aerospace applications

作　　者：赵海燕 储双杰[1,3] 张启飞 毛博[1] ZHAO Hai-yan;CHU Shuang-jie;ZHANG Qi-fei;MAO Bo(School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Baowu Special Metallurgy Co.,Ltd.,Shanghai 201940,China;Baoshan Iron&Steel Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]宝武特种冶金有限公司,上海200940 [3]宝山钢铁股份有限公司,上海201900

出　　处：《塑性工程学报》2024年第11期13-32,共20页Journal of Plasticity Engineering

基　　金：国家“十四五”重点研发计划项目(2022YFB3705600);国家自然科学基金资助项目(52101046)。

摘　　要：钛合金是一种被广泛应用于航空等领域的高性能结构材料,但因其冷塑性能差、加工难度大,故常采用热加工来成形钛合金,如模锻等。净成形或近净成形技术是获得高性能钛合金部件的重要成形方法,并已在飞机大型结构件加工生产中得到了良好的应用。系统综述了航空用钛合金不同锻造成形工艺间的差异,归纳了锻造工艺参数对钛合金微观组织演变及力学性能的影响规律,明确了钛合金在锻造过程中的微观组织演变机理、后续处理过程中的拉伸及疲劳断裂机理,结合不同锻造成形工艺的特点及现存的不足,展望了钛合金在热加工方面的研究方向及发展趋势,以期为后续钛合金锻造工艺的开发与优化提供参考。Titanium alloy is a high-performance structural material widely used in aerospace and other fields.But due to its poor cold plasticity and processing difficulty,titanium alloy is usually formed by hot working,such as die forging,etc.Net-shape forming or nearnet-shape forming technologies are important methods to obtain high performance titanium alloy components,which have been well applied in the processing and production of large structural parts of aircraft.The difference between different forging processes of titanium alloy for aerospace applications was systematically reviewed,and the influence of forging process parameters on microstructure evolution and mechanical properties of titanium alloy was summarized.The microstructure evolution mechanism of titanium alloy during the forging process,the tensile and fatigue fracture mechanism during the subsequent treatment were clarified.Combined with the features and existing shortcomings of different forging processes,the research direction and development trend of titanium alloy in hot working were prospected,hoping to provide a reference for the development and optimization of titanium alloy forging process in the future.

关 键 词：钛合金 锻造工艺 工艺参数 微观组织演变 力学性能 

分 类 号：TG312[金属学及工艺—金属压力加工]