论文部分内容阅读
对冷轧复合4343铝/4A60铝/08Al钢三层复合带材进行不同温度和时间的退火,借助金相显微镜、扫描电镜和EDAX能谱仪以及X射线衍射仪对复合界面结合区进行组织观察、元素成分线扫描分析和EDS能谱分析及XRD物相分析,研究复合界面金属间化合物的生长行为。结果表明:当退火温度较高时,4343中含量较高的Si向4A60中进行了较大程度的扩散;铝-钢复合界面在600℃保持1 h退火时有金属间化合物产生;随着退火温度的升高和退火时间的延长,复合界面金属间化合物由一层增加至三层,化合物主要由Fe4Al13和Fe2Al5组成;铝-钢复合界面金属间化合物的生长由扩散控制,其增厚符合抛物线规律,界面金属间化合物的生长激活能为14.4 k J/mol。
The cold-rolled composite 4343 aluminum / 4A60 aluminum / 08Al steel three-layer composite strip annealing at different temperatures and time, by means of metallographic microscope, scanning electron microscope and EDAX energy dispersive spectrometer and X-ray diffraction instrument to observe the binding interface of the composite interface , Elemental composition line scanning analysis and EDS EDS analysis and XRD phase analysis to study the interfacial intermetallic compound growth behavior. The results show that when the annealing temperature is high, the Si content in 4343 is greatly diffused into 4A60, and the intermetallic compound is produced when the aluminum-steel interface is annealed at 600 ℃ for 1 h. With the annealing Temperature increase and annealing time, the interfacial intermetallic compound increased from one to three layers, and the compounds mainly consisted of Fe4Al13 and Fe2Al5. The growth of the intermetallic compound at the interface of Al-Zn was controlled by diffusion, and its thickening accorded with the parabola Regularity, the interfacial intermetallic compound has an activation energy of 14.4 kJ / mol.