张建宇,陈庆安,王艳辉,李河宗,吴春京.Cu/Al复合材料高温短时退火的组织与性能演变研究[J].稀有金属材料与工程,2019,48(7):2193~2202.[Zhang Jianyu,Chen Qingan,Wang Yanhui,Li Hezong,Wu Chunjing.Study on microstructure and property evolution of Cu/Al composite during high-temperature short-time annealing[J].Rare Metal Materials and Engineering,2019,48(7):2193~2202.]
Cu/Al复合材料高温短时退火的组织与性能演变研究
投稿时间:2018-10-19  修订日期:2018-11-14
中文关键词:  Cu/Al复合材料  退火  高温短时  形核机理  金属间化合物厚度
基金项目:国家自然科学基金资助(项目号51274038);河北省高等学校科学技术研究项目(QN2018078)
中文摘要:
      将冷轧法制备的Cu/Al复合材料在475-525℃温度下退火1-8min,采用有限元软件模拟了Cu/Al复合材料在退火过程中的温度场,并采用扫描电镜(SEM)、X射线衍射仪(XRD)、能谱仪(EDS)、电子背散射衍射(ESBD)、显微硬度计等研究了Cu/Al复合材料的显微组织与力学性能。结果表明:在Cu/Al复合材料界面依次生成了CuAl<sub>2</sub>、Cu<sub>9</sub>Al<sub>4</sub>和CuAl等3种金属间化合物,在Cu/Al界面层厚度小于4μm的退火工艺范围内,Cu和Al基体发生完全再结晶形成等轴晶,Cu、Al基体的显微硬度能够迅速的降低至低温长时间(350℃、1h)退火的硬度。另外,提出了金属间化合物初生相的形核机理,分析计算了高温短时退火工艺下的形核动力学,并提出了非等温条件下的金属间化合物生长厚度的经验数值方法。
Study on microstructure and property evolution of Cu/Al composite during high-temperature short-time annealing
英文关键词:Cu/Al composite  annealing  high-temperature short-time  nucleation kinetics  intermetallic comound thickness
英文摘要:
      The cold-rolled Cu/Al laminated composite was annealed at 475-525℃ for 1-8min, the temperature field of Cu/Al composite during annealing was simulated using finite element software, and the microstructures and properties of Cu/Al composite were investigated by scanning electron microscopy(SEM), energy dispersive X-ray spectrometry(EDS), X-ray diffractometer(XRD), electron back-scattered diffraction(EBSD) and microhardness tester. The results indicated that three intermetallic compounds (IMCs), CuAl<sub>2</sub> ,Cu<sub>9</sub>Al<sub>4</sub> and CuAl phases formed successively at the Cu/Al interface, complete recrystallization of both the Cu and Al matrix took place to form equixed grain, within the annealing process scope in which the thickness of IMCs layer is smaller than 4μm, the microhardness of Cu and Al matrix drops fast to approach that of annealing at 350℃ for 1h.Therefore, the high-temperature short-time annealing process could substitute for low-temperature long-time annealing process. Furthermore,the nucleation mechanism of primary phase was proposed and the kinetics of IMCs during high-temperature short-time was analytized and calculated, and an empirical numerical method was proposed to calculate the thickness of IMCs during the non-isothermal annealing process.
作者单位E-mail
张建宇 河北工程大学机械与装备工程学院 15010921306@163.com 
陈庆安 河北工程大学机械与装备工程学院  
王艳辉 河北工程大学机械与装备工程学院  
李河宗 河北工程大学机械与装备工程学院  
吴春京 北京科技大学材料科学与工程学院  
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