| 满婷,魏振雄,苏喜喜,祖国胤.Fe-Al金属间化合物基叠层复合材料的界面表征及生长动力学研究[J].有色金属材料与工程,2023,44(1):24-30. |
| Fe-Al金属间化合物基叠层复合材料的界面表征及生长动力学研究 |
| Interface characterization and study on growth kinetics of Fe-Al metal-intermetallic-laminate composites |
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| DOI：10.13258/j.cnki.nmme.2023.01.004 |
| 中文关键词: 金属间化合物基叠层复合材料 轧制复合 界面 金属间化合物 生长动力学 |
| 英文关键词:metal-intermetallic-laminate composites rolling cladding interface intermetallic compound growth dynamics |
| 基金项目:国家自然科学基金资助项目（51874087；52011530020） |
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| 中文摘要: |
| 将SUS441不锈钢薄板和1060纯铝薄板交替叠放后，经“轧制复合—合金化退火”工艺制得 Fe-Al金属间化合物基叠层（Fe-Al metal-intermetallic-laminate，Fe-Al MIL）复合材料。采用光学显微镜（optical microscope, OM）、扫描电子显微镜（scanning electron microscope, SEM）、X射线衍射仪（X-ray diffractometer, XRD）等设备测试了不同热处理制度下Fe-Al MIL复合材料的界面微观组织形貌、物相组成及化合物生长行为。结果表明：在640 ℃退火时，均匀层的主要物相为Fe2Al5，且有原子分数为5%～6%的Cr固溶于该均匀层；在高于640 ℃退火时，除由Fe2Al5相组成的均匀层之外，化合物层还出现了明显的由Fe4Al13相和Cr2Al13相组成的两相层，且两相层交界处有Al5.50Cr1.95Fe2.55相析出；金属间化合物的厚度随退火温度的升高及时间的延长而增加，Fe2Al5相的生长规律满足抛物线法则，其生长激活能为192.28 kJ/mol。 |
| 英文摘要: |
| The Fe-Al metal-intermetallic-laminate (Fe-Al MIL) composites were prepared by alternately stacking SUS441 stainless steel sheets and 1060 pure aluminum sheets following the "rolling cladding-alloying annealing" technology. The equipments, such as optical microscope (OM), scanning electron microscope (SEM), and X-ray diffractometer (XRD), were used to investigate the interfacial microstructure, phase composition, and compound growth behavior of Fe-Al MIL composite under different heat treatment regimes. The results show that the main phase of the uniform layer annealing at 640 ℃ is Fe2Al5, and 5%-6% of Cr is solidly dissolved in the uniform layer. When the annealing temperature is higher than 640 ℃, in addition to the uniform layer composed of Fe2Al5, a two-phase layer composed of Fe4Al13 and Cr2Al13 phases appears in the compound layer, and Al5.50Cr1.95Fe2.55 phase precipitates at the interface of two-phase layer. The thickness of the intermetallic compound increases with the increase of heat treatment temperature and time, and the growth law of the Fe2Al5 phase satisfies the parabolic law with a growth activation energy of 192.28 kJ/mol. |
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