TC18钛合金大规格棒材热变形行为研究进展  

Research Progress on the Thermal Deformation Behavior of TC18 Titanium Alloy Large-size Bars

作　　者：李瑞锋 张智鑫 唐斌 何书林[4] 李金山[1,2,3] LI Ruifeng;ZHANG Zhixin;TANG Bin;HE Shulin;LI Jinshan(Innovation Center NPU Chongqing,Chongqing 401135,China;Sanhang Advanced Materials Research Institute Co.,Ltd.,Chongqing 401120,China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Baoti group Co.,Ltd.,Baoji 721014,China)

机构地区：[1]西北工业大学重庆科创中心,重庆401135 [2]重庆三航新材料技术研究院有限公司,重庆401120 [3]西北工业大学凝固技术国家重点实验室,陕西西安710072 [4]宝钛集团有限公司,陕西宝鸡721014

出　　处：《铸造技术》2024年第4期316-327,共12页Foundry Technology

基　　金：重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0824);中国博士后科学基金第73批面上资助(2023M732851);重庆市技术创新与应用发展专项(CSTB2022TIAD-KPX0032);重庆市博士后研究项目特别资助(2022CQBSHTB1019)。

摘　　要：近年来,随着自由锻造装备大型化的不断发展,航空航天关键结构件用锻件的大型化需求急剧增长,大规格棒材的制备成为了科研及工业化生产的重点工作。TC18钛合金作为一类高合金化、热变形参数敏感型高强高韧钛合金,已逐步成为航空航天关键装备的核心结构材料,因此,其棒材的大型化成为了近年来研究及生产的重点方向。本文梳理了近年来TC18钛合金大规格棒材(Φ300~Φ500 mm)生产技术概况,综述了TC18钛合金热变形数值模拟的相关研究,分析铸锭熔炼、锻造成型及热处理工艺的现状,总结大规格棒材现存问题及解决方法。最后,展望原材料制备过程今后一段时间的研究重点,结合使用单位对TC18钛合金棒材的使用需求,力争在未来打通原材料和成品锻件的全流程制造工艺,实现工艺个性化设计、组织性能定量调控。In recent years,with the continuous development of large-scale free forging equipment,the demand for large-scale forgings for aerospace key structural parts has increased sharply,and the preparation of large bars has become the focus of scientific research and industrial production.TC18 titanium alloy,a type of high-strength and high-toughness titanium alloy with high alloying and thermal deformation parameter sensitivity,has gradually become the core structural material of key aerospace equipment.Therefore,large-scale bars have become a key area of research and production in recent years.In this paper,the methods used to produce large TC18 titanium alloy bars(Φ300~Φ500 mm)in recent years are discussed,the related research on the numerical simulation of the thermal deformation of TC18 titanium alloy is summarized,the current situation of ingot melting,forging and heat treatment technology is analysed,and the existing problems and solutions for large bars are summarized.Finally,considering the future research focus of the raw material preparation process,combined with the demand of users for TC18 titanium alloy bars,we will strive to open up the whole process of manufacturing raw materials and finished forgings in the future and realize personalized design of processes and quantitative control of microstructure and properties.

关 键 词：TC18钛合金 大规格棒材 热变形行为 强塑性匹配 

分 类 号：TG146.23[一般工业技术—材料科学与工程]