(1. 銀邦金屬復(fù)合材料股份有限公司，無錫 214145；
2. 中南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 對軋制復(fù)合鋁合金/不銹鋼雙層復(fù)合材料進(jìn)行不同溫度和時間的退火，借助Zeiss Ax10金相顯微鏡、Quanta−200型掃描電鏡、EDAX能譜儀和D-max X射線衍射儀對復(fù)合界面結(jié)合區(qū)進(jìn)行金相組織觀察、元素成分線掃描分析、界面化合物EDS分析及XRD物相鑒定，研究復(fù)合界面上金屬間化合物的生長行為。結(jié)果表明：復(fù)合界面金屬間化合物(IMC)主要為Fe2Al5相，當(dāng)退火溫度達(dá)773 K時，F(xiàn)e2Al5已在界面上生成；隨退火時間的延長， Fe2Al5的增厚符合拋物線法則；界面金屬間化合物Fe2Al5的生長激活能為162.3 kJ/mol，并獲得其生長動力學(xué)模型，通過此模型可對化合物層厚度進(jìn)行初步計(jì)算。
關(guān)鍵字: 鋁/不銹鋼層狀復(fù)合材料；金屬間化合物；軋制復(fù)合；生長激活能；生長動力學(xué)
（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
