时效强化处理对高强韧性高熵金属材料力学性能和腐蚀性能影响的研究OA
Study on Effect of Aging Strengthening Treatment on Mechanical Properties of High Strength,Toughness and High Entropy Metal Materials
针对高性能航空航天起落架结构材料对强度、韧性及耐蚀性协同提升的迫切需求,本文研究了时效处理对(FeCoNi)86Al7Ti7高熵金属力学性能与耐蚀性能的影响.通过对不同时效时间下试件开展室温拉伸、电化学腐蚀试验及微观组织分析,结果表明,时效240 min时材料实现了屈服强度与延伸率的同步提升,表现出优异的强韧协同效应(极限抗拉强度1312.4 MPa、屈服强度955.5 MPa,延伸率40％),而在时效60 min时展现出最佳耐蚀性能.本文揭示了时效引起的组织演化规律及其对性能的影响机制,为新一代轻量化、高可靠性高熵合金结构材料的设计与工艺优化提供了理论支撑和技术参考.
In response to the urgent need for the synergistic improvement of strength,toughness,and corrosion resistance of high-performance aerospace landing gear structural materials,this paper systematically studied the effect of aging treatment on the mechanical properties and corrosion resistance of(FeCoNi)86Al7Ti7 high entropy metal.By conducting room temperature tensile tests,electrochemical corrosion tests,and microstructure analysis on specimens at different aging times,the results showed that the material achieved synchronous improvement in yield strength and elongation at 240 min of aging,exhibiting excellent synergistic effects of strength and toughness(ultimate tensile strength of 1312.4 MPa,yield strength of 955.5 MPa,elongation of 40％),and exhibited the best corrosion resistance at 60min of aging.This study reveals the microstructure evolution law caused by aging and its impact mechanism on performance,providing theoretical support and technical reference for the design and process optimization of new generation lightweight,high reliability,and high entropy alloy structural materials.
成红旭;骆鸿;王雪飞;赵前程;孙明磊;常月
北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083北京科技大学国家材料腐蚀与防护科学数据中心,北京 100083
航空航天
高熵金属材料时效力学性能断口形貌耐蚀性能
high entropy metal materialsagingmechanical propertiesfracture morphologycorrosion resistance
《航空科学技术》 2026 (1)
45-52,8
航空科学基金(2020Z053074001) Aeronautical Science Foundation of China(2020Z053074001)
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