(1. 西安建筑科技大學(xué) 冶金工程學(xué)院，西安710055；
2. 金堆城鉬業(yè)股份有限公司，西安 710077；3. 西部金屬材料股份有限公司，西安 710065)
摘 要: 采用軋制方法制備Cu/Mo/Cu復(fù)合材料，利用金相顯微鏡、掃描電鏡和電子拉伸機(jī)等研究Cu/Mo/Cu復(fù)合材料的界面結(jié)構(gòu)、斷裂特點(diǎn)和工藝參數(shù)對(duì)結(jié)合強(qiáng)度的影響。結(jié)果表明：軋制前經(jīng)(750 ℃，8 min)熱處理，道次變形量為55%，復(fù)合材料的界面結(jié)合緊密，最大剪切強(qiáng)度為77 MPa；鉬層金屬顯微組織呈扁平纖維狀，組織較為均勻，銅層金屬的晶粒呈等軸狀，由界面至表面晶粒逐漸增大，且分布很不均勻；復(fù)合機(jī)制為典型的裂口結(jié)合和機(jī)械嚙合。
關(guān)鍵字: Cu/Mo/Cu復(fù)合材料；軋制；復(fù)合界面；結(jié)合特性
（1. College of Metallurgy Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China;
2. Jinduicheng Molybdenum Co., Ltd., Xi’an 710077, China;
3. Western Metal Materials Co., Ltd., Xi’an 710065, China）
Abstract:The Cu/Mo/Cu cladding metal materials were made by hot rolling. The interface structure, fracture characteristic and the effect of rolling process parameters on bond strength were studied by optical microscope, scanning electron microscope and electron-tensile tester. The results show that the bonding interface of composite materials is tight when deformation rate is 55% for a pass with heat-treatment at 750 ℃ for 8 min, the maximum value of shearing strength is 77 MPa. The micro-structure of Mo layer is compressed fibrous and uniform distribution. The micro-structure of Cu layer is isometric crystal. The grain size is increased from the interface to the surface, and unevenly distributed. The mechanism of bonding is typically split bonding and mechanical interlocking.
Key words: Cu/Mo/Cu cladding metal material; rolling; cladding interface; bonding property
