微合金化对TiB_(2)颗粒增强铝基复合材料微观组织和力学性能影响的研究进展  

Micro-alloying influence in microstructure evolution and mechanical properties of TiB_(2) particle reinforced aluminum matrix composites: a review

作　　者：薛彦庆 李博 王新亮 张晗 郝启堂[1] XUE Yan-qing;LI Bo;WANG Xin-liang;ZHANG Han;HAO Qi-tang(State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072

出　　处：《材料工程》2021年第11期51-61,共11页Journal of Materials Engineering

基　　金：国家自然科学基金(51375391);陕西省重点研发计划(2020GY-117);西北工业大学凝固技术国家重点实验室自主研究课题(2019-TZ-03)。

摘　　要：微量添加合金元素是改善铝基复合材料综合性能的有效方法,是基于电磁搅拌、超声振动等物理工艺,双峰结构、仿生层状材料等制备技术之外改善增强相/基体界面结构、调控强度-韧性力学性能的一种行之有效的低成本技术。近年来,合金元素在TiB_(2)颗粒增强铝基复合材料中的研究备受关注,取得了一定的成果,对其作用机理的理解也向纳米层级甚至原子层级迈进。本文归纳了国内外微量添加合金元素对TiB_(2)/Al复合材料中TiB_(2)颗粒形貌、微观组织、力学性能的一系列最新进展,阐述了微合金化机制,并展望了其在调控复合材料裂纹萌生与扩展、发挥微纳尺度本征力学性能、协调材料强度和韧性矛盾中的潜在价值,以期为制备高性能铝基复合材料提供借鉴和参考。Micro-addition of alloying elements is not only an effective method to improve the overall performance of aluminum matrix composites but also a proven workable low-cost technology in improving the reinforced phase/matrix interface structure and regulating the mechanical property of strength-toughness other than the physical processes such as electromagnetic stirring and ultrasonic vibration, as well as preparation technologies like bimodal structure and biomimetic layered materials, etc. In recent years, the research of alloying elements in TiB_(2) particles reinforced aluminum matrix composites has attracted much attention and achieved remarkable results which lay a good foundation for better understanding of its mechanism on the nano-level or even the atomic level. A series of latest developments on the properties of TiB_(2)/Al composites by adding alloying elements at home and abroad were summarized, i.e. TiB_(2) particle morphology, microstructure and mechanical properties.The mechanism of micro-alloying and its prospect on regulating crack initiation and propagation, exerting intrinsic mechanical properties of micro and nano scale, along with coordinating the dilemma of strength-ductility trade-off were also forecasted, aimed at providing reference for the preparation of high-performance aluminum matrix composites.

关 键 词：铝基复合材料 微合金化 微观组织 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]