宇航材料工艺2024，Vol.54Issue(2)：119-124,6.DOI:10.12044/j.issn.1007-2330.2024.02.015
高强韧抗疲劳TiB2/7050Al复合材料组织与性能研究
Microstructures and Mechanical Properties of TiB2/7050Al Composites With High Tensile Strength,Good Ductility,and Fatigue Resistance
摘要
Abstract
In-situ nanoparticles reinforced Al matrix composites had low density,high modulus and high strength,making them one of the key materials for achieving lightweight equipment structure.The amount of plastic deformation during processing is an important factor determinging the microstructure and properties of aluminum matrix composites.Scanning electron microscopy and backscattered electron diffraction techniques were used to analyze the particle distribution and three-dimensional grain structure in composites,as well as the evolution law with extrusion deformation.The room temperature tensile performance and fatigue resistance of composite materials under different organizational structures were discussed.The results show that TiB2/7050Al composite have high elastic modulus(78-84 GPa),high plastic yield(6588 MPa·％),and high fatigue limit(289 MPa),and will have broad application prospects in aerospace and other fields.关键词
陶瓷颗粒/铝基复合材料/强度/塑性/疲劳极限Key words
Particulates/Al matrix composites/Strength/Ductility/Fatigue strength分类
通用工业技术引用本文复制引用
刘钧,刘长志,鄢东洋,陈哲,王浩伟..高强韧抗疲劳TiB2/7050Al复合材料组织与性能研究[J].宇航材料工艺,2024,54(2):119-124,6.基金项目
国家自然科学基金资助(52101179,52101043,51971137) （52101179,52101043,51971137）
