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电子束精炼 FGH4097 母合金夹杂物迁移行为研究
Migration Behavior of Inclusions in FGH4097 Master AlloyDuring Electron Beam Smelting
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- DOI:
- 作者:
- 夏福宽 1,2,谭 毅 1,2,白如圣 1,2,张雪良 3,李鹏廷 1,2,常 凯 1,2
XIA Fukuan1,2, TAN Yi1,2, BAI Rusheng1,2, ZHANG Xueliang3, LI Pengting1,2, CHANG Kai1,2
- 作者单位:
- 1. 东北大学 材料科学与工程学院,辽宁 沈阳 110819;2. 东北大学 材料电磁过程研究教育部重点实验室,辽宁 沈阳110819;3. 东北大学 轧制技术及连轧自动化国家重点实验室,辽宁 沈阳 110819
1. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; 2. Laboratory forNew Energy Material Energetic Beam Metallurgical Equipment Engineering of Liaoning Province, Dalian 116024, China;3. GAONA Aero Material Co.,Ltd., Beijing 100081,China
- 关键词:
- 铸轧复合;钛/铝复合板;轧制工艺;界面结合强度
cast-rolling bonding; Ti/Al composite plate; rolling technology; interfacial bonding strength
- 摘要:
- 除热处理工艺外,轧制工艺也是影响铸轧 Ti/Al 复合板工艺稳定性和界面结合强度的重要因素。 通过改变铸轧复合过程中的轧制温度和轧制变形量,获得了不同的 Ti/Al 复合板。 利用 SEM、EBSD、XRD 等手段对复合板的显微组织和界面结合性能进行了表征和测试。 结果表明,在不同温度下进行 50%变形量的轧制时,复合板发生不同程度翘曲。 当轧制温度为 470 ℃时,复合界面在高倍扫描电镜下为锯齿状界面;而在轧制温度为 500 和 530 ℃时,复合界面为波浪状界面。随着轧制温度的升高,复合板的结合强度也有所提高。在温度一定、变形量改变的轧制过程中,当变形量小于 50%时,复合板的平均结合强度随着变形量的增大而增加。当变形量为 75%时,由于钛层金属太薄,且变化不平均,导致钛层出现破裂使复合板失效。 综上所述,在温度为 500 ℃,轧制变形量为 50%时,复合板的平均结合强度最好。In addition to the heat treatment process, the rolling process is also an important factor affecting the stability andinterface bonding strength of cast-rolled Ti/Al composite plates. In this paper, different Ti/Al composite plates wereobtained by changing the rolling temperature and deformation during the process of casting and rolling. The microstructureand interface bonding properties of the composite plates were characterized and tested by means of SEM, EBSD, XRD, etc.The results show that when rolling at different temperatures with 50% deformation, the composite plate warps to differentdegrees. Under high-magnification scanning electron microscopy, a serrated interface is observed at a rolling temperature of470 ℃, while a wavy interface is observed at 500 and 530 ℃. Moreover, increasing the rolling temperature enhances thebonding strength of the composite plate. When the deformation is less than 50% , the average bonding strength of thecomposite plate increases with increasing deformation during the rolling process at a constant temperature. When thedeformation amount is 75% , the titanium layer is too thin, and the change is uneven, resulting in the fracture of thetitanium layer and the failure of the composite plate. In summary, when the temperature is 500 ℃ and the rollingdeformation is 50%, the average bonding strength of the composite plate is the greatest.