激光选区熔化成形高强钛合金研究现状及展望  

Research Status and Prospects of High-Strength Titanium Alloys Fabricated by Selective Laser Melting

作　　者：马尹凡 樊江昆[1,2,3] 唐璐瑶 翟浩宇 张智鑫 陈彪 王军 唐斌[1,2,3] 寇宏超 李金山[1,2,3] Ma Yinfan;Fan Jiangkun;Tang Luyao;Zhai Haoyu;Zhang Zhixin;Chen Biao;Wang Jun;Tang Bin;Kou Hongchao;Li Jinshan(State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;National&Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal Materials,Xi'an 710072,China;Chongqing Innovation Center,Northwestern Polytechnical University,Chongqing 401135,China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]先进金属材料精确热成型技术国家地方联合工程研究中心,陕西西安710072 [3]西北工业大学重庆科创中心,重庆401135

出　　处：《稀有金属材料与工程》2025年第1期280-292,共13页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(52074231,52274396);国家重点研发计划(2021YFB3702601);中国博士后科学基金(2023M732851)。

摘　　要：以近/亚稳β钛合金为代表的高强钛合金具有高的比强度、良好的塑性加工性能、优异的淬透性以及可通过热处理强化获得强度-塑性-韧性匹配,已广泛应用于航空航天等领域重大装备承力构件。激光选区熔化(SLM)作为钛合金增材制造领域的一项重要技术,具有可以实现近净成形、复杂结构一体化成形等显著优势,成为航空航天制造领域的重点发展技术和前沿方向。本文围绕SLM成形原理和特点,从SLM成形高强钛合金经历极高加热/冷却速率以及独特的热循环历史出发,重点介绍了高强钛合金微观结构特征、相组成以及力学性能特点。总结了SLM高强钛合金热处理工艺种类及其主要影响规律,旨在为获得优异的力学性能匹配提供参考。最后,根据对现有研究成果的分析,总结了SLM成形高强钛合金研究面临的挑战,并对未来该领域可能的研究方向作了展望。High-strength titanium alloys,represented by near/metastableβtitanium alloys,have high specific strength,good plastic processing properties,and excellent hardenability,and they can be strengthened through heat treatment to get a better match of strength-plasticity-toughness.They have been widely used in load-bearing components of major equipment in aerospace and other fields.Selective laser melting(SLM),as an important technique in the field of titanium alloy additive manufacturing,has significant advantages such as near-net shaping and integrated forming of complex structures.So it has become a key development technique and cutting-edge direction in the aerospace manufacturing field.This review focuses on the principle and characteristics of SLM,starting from the extremely high heating/cooling rate and unique thermal cycle history of SLMed high-strength titanium alloy,and primarily discusses the microstructural features,phase composition,and mechanical properties of high-strength titanium alloys.The types of heat treatment processes of SLMed high-strength titanium alloy and their main influencing rules are summarized,aiming to provide a reference for obtaining excellent mechanical property match.Finally,drawing upon an analysis of existing research outcomes,the challenges of SLMed high-strength titanium alloys are summarized.It also offers a forward-looking perspective on potential research directions in this field.

关 键 词：高强钛合金 激光选区熔化 微观组织 力学性能 增材制造 

分 类 号：TG146.23[一般工业技术—材料科学与工程]