摘要
利用压力条件下固-液复合法,在不同的铝液浇注温度下制备铜/铝复合材料,并对复合界面的结合性能和组织结构进行了研究。结果表明:在铜板预热温度400℃、单位压力1 000 MPa等其他条件相同的前提下,铝液浇注温度720℃时制备出的铜/铝复合材料抗拉强度最大,约为40.07 MPa;冶金复合界面层内部又分为不同的内层,且随着浇注温度的升高,内层数增加;沿着铝基体到铜基体的方向界面层各内层相分别为α-Al+CuAl2、CuAl2、CuAl,且各内层厚度逐渐减薄;拉伸断裂易发生在含CuAl2的层。
Abstract： Cu/Al compound materials with different pouring temperature of liquid aluminum were fabricated by solid-liquid bonding method under the condition of pressure, and the bonding performance and microstructures of Cu/Al interfaces were studied. The results show that when pouring temperature is 720 ℃, the Cu/Al compound materials with the highest tensile strength of 40.07 MPa can be obtained under the premise of the same other conditions, for example, Cu plate is preheated at 400 ℃ and the pressure is 1 000 MPa; the metallurgical bonding interface is divided into different inner layers, and the number of inner layers increases with the increase of pouring temperature; from aluminum matrix to copper matrix, the phases are α-Al＋CuAl2, CuAl2 and CuAl respectively, and the inner layers thickness decreases gradually; fracture is easy to appear in CuAl2 layer.
出处
《铸造》
CAS
CSCD
北大核心
2014年第7期655-658,共4页
Foundry
基金
国家自然科学基金资助项目(51345011)
河南省杰出人才资助项目(134200510011)
教育部创新团队发展计划资助项目(ITR1234)
关键词
铜
铝
固-液复合
界面层
金属间化合物
Cu/Al
solid-liquid bonding
interface layer
intermetallic compound
