Enyu Liu, Qingshuang Ma, Xintong Li, Aoxue Gao, Jing Bai, Liming Yu, Qiuzhi Gao, and Huijun Li, Effect of two-step solid solution on microstructure and δ phase precipitation of Inconel 718 alloy, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-024-2887-7
Cite this article as:
Enyu Liu, Qingshuang Ma, Xintong Li, Aoxue Gao, Jing Bai, Liming Yu, Qiuzhi Gao, and Huijun Li, Effect of two-step solid solution on microstructure and δ phase precipitation of Inconel 718 alloy, Int. J. Miner. Metall. Mater.,(2024). https://doi.org/10.1007/s12613-024-2887-7
Research Article

Effect of two-step solid solution on microstructure and δ phase precipitation of Inconel 718 alloy

+ Author Affiliations
  • Received: 23 January 2024Revised: 6 March 2024Accepted: 20 March 2024Available online: 21 March 2024
  • Inconel 718 is the most popular nickel-based superalloy, extensively used in aerospace, automotive and energy industries owing to its extraordinary thermomechanical properties. The effects of different two-step solid solution treatments on microstructure and δ phase precipitation of Inconel 718 alloy were studied, and the transformation mechanism from γ" metastable phase to δ phase was clarified. The precipitates were statistically analysed by X-ray diffractometer test results. The results show that the content of δ phase increased with the increase in second step solid solution temperature. The changes of microstructure and δ phase were studied by scanning electron microscopy and transmission electron microscopy. Intragranular δ phase formed in Inconel 718 alloy with a second step solid solution temperature of 925°C, and its orientation relationship with γ matrix was determined as [1(—)00]δ//[011(—)]γ and (010)δ//(111)γ. Furthermore, Vickers hardness of different heat treatment samples was measured, and hardness of sample treated by second step solid solution treatment at 1010°C reached the maximum value of 446.84 HV.

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article Views(45) PDF Downloads(5) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return