航空材料学报2017，Vol.37Issue(3)：61-67,7.DOI:10.11868/j.issn.1005-5053.2016.00052
激光熔化沉积TA15+Ti2AlNb合金的组织与力学性能
Microstructure and Mechanical Properties of Laser Melting Deposited TA15+Ti2AlNb Alloys
摘要
Abstract
Three different proportions of TA15 and Ti2AlNb alloy powde were premixed and thin-walls with proportions of 40%TA15+60%Ti2AlNb,50%TA15 +50% Ti2AlNb and 60%TA15+40%Ti2AlNb (mass fraction) were prepared by using laser melting deposition process.The composition,microstructure and mechanical properties of the three thin-walls were analyzed.The results indicate that the compositions of all the three kinds of alloys are uniform.The alloy appears as basketweave microstructure with acicular α phase and α2 phase distributing within primary β/B2 grain.Tensile strength of the three kinds of alloys are 1108 MPa and 1071 MPa,1105 MPa,and elongation are 3.0%,2.2% and 3.8% respectively;Tear ridge along α2 phases is visible on tensile fracture surface,and the fracture mode is subject to cleavage fracture.关键词
激光熔化沉积/钛合金/微观组织/力学性能Key words
laser melting deposition/titanium alloy/microstructure/mechanical properties分类
信息技术与安全科学引用本文复制引用
刘彦涛,张永忠,陈以强,唐杨杰..激光熔化沉积TA15+Ti2AlNb合金的组织与力学性能[J].航空材料学报,2017,37(3):61-67,7.基金项目
自然科学基金(51571037) （51571037）
北京市自然科学基金(Z140002)资助项目 （Z140002）
