(哈爾濱工業(yè)大學(xué) 現(xiàn)代焊接生產(chǎn)技術(shù)國家重點實驗室， 哈爾濱 150001)
摘 要: 在500～570 ℃的溫度范圍內(nèi)， 采用Al-Si-Cu、 Al-Si-Cu-Zn釬料， 對碳纖維增強鋁基復(fù)合材料(碳體積分?jǐn)?shù)為50％)進(jìn)行了高頻感應(yīng)釬焊。 結(jié)果表明， 釬料中的Si和Cu向母材擴散， 復(fù)合材料中的碳纖維與滲入的液態(tài)釬料及基體Al發(fā)生界面反應(yīng)， 生成了Al4C3、 SiC和CuAl2脆性化合物。 連接接頭具有較好的力學(xué)性能， 使用Al-28Cu-6Si和Al-4Cu-10Si釬料， 在無壓、 無釬劑狀態(tài)下， 釬焊接頭的抗剪強度分別為63和75 MPa， 剪切斷裂發(fā)生在釬料層與母材界面上。
關(guān)鍵字: Cf/Al復(fù)合材料； 高頻感應(yīng)釬焊； Al基釬料
（ National Key Laboratory of Advanced Welding Production Technology,
Harbin Institute of Technology, Harbin 150001, China）
Abstract: Using Al-Si-Cu and Al-Si-Cu-Zn filler alloy, in the temperature range of 500-570 ℃, the brazing technology of the carbon fibre reinforced aluminium matrix composite was investigated. The results show that component elements Si and Cu diffuse into the base metal. The infiltrated filler alloy, the aluminium base and the carbon fibre react to produce many interfacial phases like Al4C3, SiC and CuAl2. The bond between the filler and the aluminium base is perfect. Using the Al-28Cu-6Si and Al-4Cu-10Si filler alloy, when brazed without pressure and flux, the shear strengths of the brazing joint are 65 and 75 MPa, respectively. The shear fracture occurs at the interface between brazing alloy and base metal.
Key words: carbon fibre reinforced aluminium matrix composite; high frequency induction brazing; aluminium base filler alloy
