摘要
采用Al-K2Ti F6-K2ZrF6-KBF4体系制备(ZrB_2+TiB_2)二元纳米颗粒增强AlSi9Cu3基复合材料,并对其进行热处理,研究了颗粒加入量对复合材料组织与性能的影响。结果表明,确定的优选颗粒加入量为3.14%;铸态抗拉强度和伸长率分别为265 MPa和14.8%;时效处理后,复合材料的强度略有上升。经过T6和T7热处理后强度有了大幅度提升,拉伸断口呈明显的韧性断裂形式,T7处理的拉伸断口韧窝较清晰、伸长率高于T6。
The Al-K2TiF6-K2ZrF6-KBF4 preparation （ZrB2＋TiB2） binary system nanopartictes reinforced A1Si9Cu3 composite and heat treatment, the effect of particle addition on microstructure and mechanical properties of composites were investigated. The results show that the added amount of the selected particles should be 3.14%. The tensile strength and elongation of as-cast are 265 MPa and 14.8%, respectively. The tensile strength of the composite increase slightly after aging treatment. After the heat treatment of T6 and T7, the tensile strength has been greatly improved, and the tensile fracture is in an obvious form of toughness fracture, the tensile fracture is clear dimple treated with T7, and the elongation is higher than T6 heat treatment.
作者
印厚尚
张松利
梁智萍
施欣星
赵玉涛
关创
YIN Houshang;ZHANG Songli;LIANG Zhiping;SHI Xinxing;ZHAO Yutao;GUAN Chuang(School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;Zhenjiang Chuangzhi Special Alloy Technology Development Co.Ltd,Zhenjiang 212000,China)
出处
《铸造技术》
CAS
2018年第7期1554-1558,共5页
Foundry Technology
基金
国家自然科学基金资助项目(U1664254
U51174098)
