(1. 银邦金属复合材料股份有限公司，无锡 214145；
2. 中南大学 材料科学与工程学院，长沙 410083)
摘 要: 对轧制复合铝合金/不锈钢双层复合材料进行不同温度和时间的退火，借助Zeiss Ax10金相显微镜、Quanta−200型扫描电镜、EDAX能谱仪和D-max X射线衍射仪对复合界面结合区进行金相组织观察、元素成分线扫描分析、界面化合物EDS分析及XRD物相鉴定，研究复合界面上金属间化合物的生长行为。结果表明：复合界面金属间化合物(IMC)主要为Fe2Al5相，当退火温度达773 K时，Fe2Al5已在界面上生成；随退火时间的延长， Fe2Al5的增厚符合抛物线法则；界面金属间化合物Fe2Al5的生长激活能为162.3 kJ/mol，并获得其生长动力学模型，通过此模型可对化合物层厚度进行初步计算。
关键字: 铝/不锈钢层状复合材料；金属间化合物；轧制复合；生长激活能；生长动力学
（1. Yin Bang Clad Material Co., Ltd., Wuxi 214145, China;
2. School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The aluminum/stainless steel clad plates bonded by hot-rolling were annealed at different temperatures for different times. The microstructure, element distribution and identification of the intermetallic compound (IMC) at the interface were studied with Zeiss Ax10 optical microscope, Quanta−200 scanning electron microscope, EDAX energy dispersive spectrometer, D-max XRD, respectively. The influence of annealing temperature and time on the formation and growth of the IMC at the interface was investigated. The results show that the IMC (Fe2Al5) forms at the interface, which begins to form when the temperature is up to 773 K. With elongation of the annealing time, it becomes thicker according to the parabolic law. The growth activation energy for the growth of the compound is 162.3 kJ/mol, and the growth kinetics model is obtained, by which the thickness of the IMC can be evaluated.
Key words: aluminum/stainless steel cladding material; intermetallic compound; roll bonding; growth activation energy; growth kinetics
