激光增材制造网状结构金属基复合材料的研究进展
Research progress on metal matrix composite with network structure fabricated by laser additive manufacturing
伍子纯 1刘阳 2李海尊 3谭振国 4唐楠 3宋宇峰 3刘筱 5陈宇强3
作者信息
- 1. 湖南科技大学 机电工程学院,湘潭 411201;湖南科技大学 高功效轻合金构件成形技术及耐损伤性能评价湖南省工程研究中心,湘潭 411201
- 2. 湖南科技大学 机电工程学院,湘潭 411201;湖南西交智造科技有限公司,湘潭 411100
- 3. 湖南科技大学 高功效轻合金构件成形技术及耐损伤性能评价湖南省工程研究中心,湘潭 411201
- 4. 湖南西交智造科技有限公司,湘潭 411100
- 5. 湖南科技大学 机电工程学院,湘潭 411201
- 折叠
摘要
相较于传统增强相呈均匀分布的金属基复合材料,网状结构金属基复合材料因其独特的"机械互锁""位错钉扎"等组织结构特征,具有更优异的室温强度、高温强度、弹性模量和断裂韧性,在航天、航空等领域上具有广泛的应用前景.激光增材制造技术可实现对网状结构的精细化调控,为网状结构金属基复合材料的进一步发展提供了新的途径.本文综述了高能量激光束诱导马兰戈尼对流作用下网状结构金属基复合材料的形成机理、影响网状结构形成的因素、不同类型网状结构的显微组织结构特征,分析了网状结构金属基复合材料的多段弯曲断裂、微孔聚集断裂等断裂机制,阐述了在霍尔-佩奇、奥罗万、泰勒、载荷传递等强化机制共同作用下的强化机理,以及独特的增强相贫、富区协同作用下的韧化机理,并对其未来的研究方向进行了展望.
Abstract
Compared with the conventional enhanced phase with uniform distribution of metal matrix composite,the metal matrix composite with network structure owes the higher room temperature and high temperature strength and elastic modulus,as well as excellent fracture toughness,it has a wide application prospect in aviation,aerospace and other fields,due to its unique characteristics of organization structure,such as"mechanically interlocked structure"and"dislocation locking".Due to the advantages of integrated near net shape manufacturing of complex components,high efficiency and energy saving,fine control and good metallurgical interface,the laser additive manufacturing technology has become a hot topic to fabricate metal matrix composite with network structure in recent years.The formation mechanism of metal matrix composite with network structure under high-energy laser-induced Maragroni convection,the factors affecting the formation of metal matrix composite with network structure,and the microstructure characteristics of network structures formed by different types of reinforcements were reviewed,the multi-stage bending fracture and microporous aggregation fracture of the metal matrix composite with network structure were analyzed,the strengthening mechanism of the network structure under the combined action of Hall-Petch strengthening,Orowan strengthening,Taylor strengthening and load transfer strengthening,and the fracture toughening mechanism under the synergistic action of the unique enhanced phase-rich and phase-poor regions were described,and the prospect of its development was prospected.
关键词
网状结构/激光增材制造/金属基复合材料/断裂机制/强韧化机理Key words
network structure/laser additive manufacturing/metal matrix composite/fracture mechanism/strengthening and toughening mechanism引用本文复制引用
基金项目
国家自然科学基金(52105334)
湖南省科技创新项目(2021JJ40206)
湖南省科技创新项目(2022JJ20025)
湖南省科技创新项目(2022RC1134)
湖南省教育厅科研项目(21B0472)
国家级大学生创新创业训练计划(202210534127)
出版年
2024
NETL
NSTL
维普
万方数据