聊城大学学报（自然科学版）2024，Vol.37Issue(3)：53-61,9.DOI:10.19728/j.issn1672-6634.2023060003
固溶冷却方式对新型高强近β钛合金Ti-5321微观组织及力学性能的影响
Effect of Cooling Method After Solution on Microstructure and Mechanical Properties of New Near-β Ti Alloy Ti-5321
摘要
Abstract
Influence of cooling method after solution on microstructure evolution,phase transformation and mechanical properties of new hi gh strength Ti alloy Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe(these values are mass fraction multiplied by 100,Ti-5321)was studied in this work.The results showed that different microstructures were developed depending on solution cooling method.The samples under different cool-ing conditions experienced different phase transformation processes,leading to α precipitates exhibiting different characters after aging treatment and finally obtained different properties.For the air cooled sam-ple,two types of intermediate phases ω and O'would be formed in β matrix.In comparison with the water quenched sample,the air cooled sample developed α precipitates having smaller size and larger number density,as well as stronger precipitation hardening effect.When aged at 600 ℃,the air cooled sample ob-tained highest ultimate tensile strength 1 421 MPa,and the strength of water quenched one was 1 220 MPa.In the furnace cooled sample,these a precipitates presented plate-like shape,forming basketwave microstructure.It could not be affected by aging treatment,and the furnace cooled alloy had lowest strength and best ductility.关键词
钛合金/冷却方式/微观组织/力学性能Key words
titanium alloy/cooling method/microstructure/mechanical properties分类
金属材料引用本文复制引用
宋博,安明宇,王红阳,王一森,甄金明..固溶冷却方式对新型高强近β钛合金Ti-5321微观组织及力学性能的影响[J].聊城大学学报（自然科学版）,2024,37(3):53-61,9.基金项目
国家自然科学基金项目(52105190) （52105190）
山东省自然科学基金资助项目(ZR2022QE115) （ZR2022QE115）
聊城市重点研发计划政策引导类项目(2022YDSF85) （2022YDSF85）
聊城大学大学生创新创业训练计划项目(CXCY2023029)资助 （CXCY2023029）
