钛合金薄壁筒形件热强旋宏微观成形规律研究进展  

Advances in Macroscopic and Microscopic Deformation Laws of Titanium Alloy Thin-walled Cylindrical Parts Processed by Hot Power Spinning

作　　者：詹梅[1,2,3] 王贤贤[1,2,3] 高鹏飞 ZHAN Mei;WANG Xianxian;GAO Pengfei(Shaanxi Key Laboratory of High-Performance Precision Forming Technology and Equipment, Northwestern Polytechnical University, Xi’an 710072 China;State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072 China;School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072 China)

机构地区：[1]西北工业大学陕西省高性能精确成形技术与装备重点实验室,陕西西安710072 [2]西北工业大学凝固技术国家重点实验室,陕西西安710072 [3]西北工业大学材料学院,陕西西安710072

出　　处：《西华大学学报（自然科学版）》2019年第4期1-9,共9页Journal of Xihua University:Natural Science Edition

基　　金：航天先进制造技术研究联合基金(U1537203);国家杰出青年科学基金(51625505);国家自然科学基金面上项目(51875467)

摘　　要：钛合金薄壁筒形件是航空航天等重要领域迫切需要的高性能轻量化构件,强力旋压成形技术是实现该类构件整体化高性能精确成形的一种有效途径。然而,钛合金筒形件强旋是多场耦合、多参数作用下的多道次热成形过程,变形过程中极易产生隆起、喇叭口和破裂等宏观缺陷,且会诱发复杂的组织演化,改变组织形态与特征参数,进而影响筒形件的力学性能。为此,国内外学者针对钛合金薄壁筒形件热强旋宏微观成形规律开展了大量研究。本文从旋压变形规律与宏观缺陷的控制、强力旋压损伤破裂预测、钛合金筒形件热强旋的微观组织性能演变特征等方面综述了相关研究工作,最后总结了钛合金筒形件热强旋成形仍面临的关键难题与挑战。本文对认识和发展钛合金薄壁筒形件精确成形成性一体化制造技术具有重要指导意义和参考价值。Thin-walled titanium cylindrical parts are widely utilized in aerospace and aviation fields due to the advantages of high-performance and lightweight, and they are generally produced by hot power spinning (flow forming). However, the forming of titanium alloy cylindrical part is involved the multi-field, multi-parameter and multi-pass at elevated temperature, thus the macroscopic defects are prone to occurring during deformation, such as build-up, bell-mouth and fracture, etc. Meanwhile, the complicated deformation history in this process results in different microstructure mechanisms, grain morphologies and microstructural parameters, which in turn affect the final mechanical properties of spun components. In this paper, the macroscopic deformation laws and microstructure evolution in the hot power spinning of titanium alloy were reviewed, including the deformation characteristics, the macroscopic defects controlling , facture predicting, and the evolution of microstructure and mechanical properties of titanium alloy spun cylindrical parts. Finally, the key problems and challenges in the current hot power spinning of titanium alloy were summarized, and an outlook of the process was given. This study will provide a fundamental guidance for tailoring the microstructure and the properties while shaping the geometries of thin-walled titanium cylindrical parts in hot power spinning processes.

关 键 词：钛合金薄壁筒形件 热强旋 宏观缺陷 损伤破裂 组织演化 

分 类 号：TQ658.2[化学工程—精细化工] TS251.5[轻工技术与工程—农产品加工及贮藏工程]