基于微变形控制对武器装备用Ti-3.5Al-5Mo-4V合金时效行为的影响研究  

Effect of micro-deformation control on the aging behavior of Ti-3.5Al-5Mo-4V alloy for weapon equipment

作　　者：韩盼盼 冀宣名 HAN Panpan;JI Xuanming(Jiangnan Design&Research Institute of Machinery&Electricity,Guiyang 550009,China;School of Materials and Metallurgy,Guizhou University,Guiyang 550025,China)

机构地区：[1]江南机电设计研究所,贵州贵阳550009 [2]贵州大学材料与冶金学院,贵州贵阳550025

出　　处：《贵州科学》2025年第1期85-89,共5页Guizhou Science

基　　金：贵州省科技支撑计划(2022-050)。

摘　　要：Ti-3.5Al-5Mo-4V作为一种轻质高强结构材料,已逐步应用在武器装备,以满足武器装备轻量化需求。为进一步提高其综合性能,促进其在航空航天及武器领域的开发利用,指导装备的加工生产。本研究结合装备材料处理加工过程,采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、显微硬度测定等分析测试方法研究了微变形态Ti-3.5Al-5Mo-4V合金500℃等温时效过程中组织与性能的变化规律。结果表明:微变形态Ti-3.5Al-5Mo-4V合金时效处理后的组织均为β基体和基体上析出的次生α相;微变形有效的促进时效过程α相析出,时效15 min后,α相体积分数约为40.8%。在时效15 min后,微变形Ti-3.5Al-5Mo-4V合金的显微硬度已基本达到峰值,随着时效时间的进一步增加,显微硬度逐渐减小。As a lightweight and high-strength structural material,Ti-3.5Al-5Mo-4V has been gradually applied to weapon equipment to meet the lightweight requirements.In order to further improve its comprehensive performance,promote its development and utilization in the field of aerospace and weapons,and guide the processing and production of equipment,in this study,X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and microhardness measurement were used to study the microstructure and properties of Ti-3.5Al-5Mo-4V alloy during isothermal aging at 500℃.The results showed that the microstructure of Ti-3.5Al-5Mo-4V alloy after aging treatment wasβmatrix and secondaryαphase precipitated on the matrix.The micro-deformation effectively promoted the precipitation ofαphase during the aging process.After aging for 15 min,the volume fraction ofαphase was about 40.8%.After aging for 15 min,the microhardness of Ti-3.5Al-5Mo-4V alloy had reached the peak value.With the increase of aging time,the microhardness decreased gradually.

关 键 词：武器装备 Ti-3.5Al-5Mo-4V合金 热处理 力学性能 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] TG166.5[金属学及工艺—热处理]