(1. 江西省科學院 江西省銅鎢新材料重點實驗室，南昌 330029；
2. 中南大學 材料科學與工程學院，長沙 410083)
摘 要: 采用超導(dǎo)強磁場真空熱處理爐對Cu-14Fe-0.1Ag合金進行不同的時效處理，利用掃描電子顯微鏡、能譜儀、維氏硬度計及數(shù)字微歐計研究了強磁場時效對合金微觀組織、固溶度、力學性能及導(dǎo)電性能的影響。結(jié)果表明：在Cu-14Fe-0.1Ag合金的時效處理過程中，施加強磁場可促進Fe枝晶的球化，隨著磁場強度的增加，F(xiàn)e枝晶的球化效應(yīng)更加明顯，F(xiàn)e在Cu基體中的固溶度逐漸減小；在10 T強磁場下，合金的較佳時效溫度為500 ℃；在10T和500 ℃溫度下時效1 h，可獲得強度和導(dǎo)電性匹配良好的合金材料。
關(guān)鍵字: Cu-Fe-Ag合金；強磁場；時效處理；組織；性能
（1. Jiangxi Key Laboratory for Advanced Copper and Tungsten Materials,
Jiangxi Academy of Sciences, Nanchang 330029, China;
2. School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The aging treatment of Cu-14Fe-0.1Ag alloy was investigated by a vacuum heat treating furnace under a high magnetic field. The microstructure, solid solubility of Fe in Cu matrix, mechanical and electrical properties were investigated by scanning electron microscope, energy spectrometer, Vickers hardness tester and micro-ohmmeter. The results indicate that high magnetic field promotes the spheroidization of Fe dendrites; the spheroidization intensifies and the solid solubility decreases with the magnetic induction intensity increasing; the optimum temperature of aging treatment is 500 ℃ under a high magnetic field of 10 T; and the Cu-14Fe-0.1Ag alloy has a good combination property of strength and conductivity after aging treatment under 10 T at 500 ℃ for 1 h.
Key words: Cu-Fe-Ag alloy; high magnetic field; aging treatment; microstructure; property
