铸造技术2025，Vol.46Issue(11)：1067-1074,8.DOI:10.16410/j.issn1000-8365.2025.5050
新型高强韧钛合金薄板高温变形行为研究
Study of the High-Temperature Deformation Behavior of Novel High-Strength-High-Toughness Titanium Alloy Thin Sheets
摘要
Abstract
To investigate the high-temperature mechanical response and deformation mechanisms of novel high-strength and high-toughness TC21 titanium alloy thin sheets with different initial microstructures,1.5-mm-thick sheets featuring lamellar and duplex microstructures were utilized to conduct high-temperature tensile experiments.Microstructural characterization of the samples under various deformation conditions was performed by scanning electron microscopy(SEM)and electron backscatter diffraction(EBSD).The results reveal that the alloy exhibits superplastic deformation characteristics at 880 and 900 ℃ with strain rates of 0.01 and 0.001 s-1,resulting in elongations exceeding 100％.During deformation,dynamic recrystallization and phase transformation exhibit a significant synergistic effect,manifested as grain refinement,pronounced equiaxialization,and a maximum β-phase content.关键词
TC21钛合金/高温变形/超塑性/动态再结晶/相变Key words
TC21 titanium alloy/high-temperature deformation/superplasticity/dynamic recrystallization/phase transformation分类
矿业与冶金引用本文复制引用
王鹏伟,王逸涵,陈家豪,李志鹏,董子祥,王润泽,唐斌..新型高强韧钛合金薄板高温变形行为研究[J].铸造技术,2025,46(11):1067-1074,8.基金项目
国家重点研发计划(2021YFB3702602) （2021YFB3702602）
陕西省科学家工程师项目(2022KXJ-109) （2022KXJ-109）
