摘要
增材制造凭借其高设计自由度和快速成形的特点,在制造复杂几何结构的航空航天和国防领域关键部件上具有巨大的优势。Ti-6Al-4V钛合金具有低密度、高比强度及抗蠕变性的特性,在经常承受冲击载荷的航天器、武器装备等关键部位上得到了广泛应用,深入了解增材制造Ti-6Al-4V钛合金在动静载荷作用下的力学性能及影响机制是提高构件使役性能的重要基础。为此,对增材制造Ti-6Al-4V钛合金的力学响应最新研究进展进行了系统的梳理和归纳。首先,简要概括了典型金属增材制造技术分类和工作原理。其次,梳理了增材制造Ti-6Al-4V钛合金的准静态拉伸性能和动态压缩性能,并与铸造和锻造Ti-6Al-4V构件的力学性能进行了比较。然后,对增材制造钛合金显微组织和力学行为的关联机制展开了讨论。最后,针对增材制造Ti-6Al-4V合金在静态载荷作用下的各向异性力学响应,总结了常用改善各向异性的后处理工艺。
With its high design freedom and rapid prototyping capabilities,additive manufacturing(AM)offers significant advantages in manufacturing critical components with complex geometries for the aerospace and defense industries.Ti-6Al-4V alloy,leveraging its exceptional combination of low density,high specific strength,and creep resistance,are extensively employed in critical structures that are frequently subjected to impact loading in aerospace and defense systems.A thorough understanding of the mechanical properties and underlying mechanisms of the additively manufactured Ti-6Al-4V alloy under static and dynamic loading is crucial for enhancing the service performance of these components.This paper systematically reviews and summarizes the latest advancements in the mechanical response of AM Ti-6Al-4V titanium alloys.Firstly,a brief overview of the classification and working principles of typical metal additive manufacturing(AM)technologies is provided.Subsequently,research efforts on the quasi-static tensile and dynamic compressive properties of additively manufactured Ti-6Al-4V titanium alloy are systematically reviewed,followed by a comparative analysis of its mechanical performance against cast and forged Ti-6Al-4V components.Furthermore,the mechanisms of correlation between the microstructure and mechanical behaviors of typical metal additive manufactured titanium alloys.Additionally,the commonly used post-processing techniques to mitigate the anisotropic mechanical response of AM Ti-6Al-4V alloy under static loading are summarizes.
作者
肖先锋
徐建龙
吴祖锡
叶小军
付艳恕
XIAO Xianfeng;XU Jianlong;WU Zuxi;YE Xiaojun;FU Yanshu(School of Advanced Manufacturing,Nanchang University,Nanchang 330031,Jiangxi,China;School of Information and Artificial Intelligence,Nanchang Institute of Science and Technology,Nanchang 330108,Jiangxi,China)
出处
《爆炸与冲击》
北大核心
2025年第8期9-29,共21页
Explosion and Shock Waves
基金
国家自然科学基金(12162024,12062013)
江西省自然科学基金(20224BAB201019)。
关键词
增材制造
TI-6AL-4V
动静载荷
力学性能
各向异性
additive manufacturing
Ti-6Al-4V
dynamic and static loading
mechanical properties
anisotropy
