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Heat Treatment of a New Designed Ni-Based Single Crystal Superalloy

  • Yichuan Liu
  • Zheng Tan
  • Wenshu Tang
  • Zhi Zheng
  • Enze Liu
  • Jian Tong
  • Likui Ning
Conference paper

Abstract

The heat treatment for a new designed Ni-based single crystal superalloy was investigated. The solution heat treatment was confirmed as 1260 °C/2 h + 1280 °C/4 h, AC through differential scanning calorimetry (DSC) curves and incipient melting experiments. The aging heat treatment was determined as 1120 °C/4 h, AC + 870 °C/32 h, AC according to the high temperature stress rupture tests for samples aging at different temperatures. Results showed that the eutectic was completely dissolved after solution heat treatment. The γ′ phase was uniformed in suitable size after aging heat treatment. The stress rupture test at 1070 °C/140 MPa showed the rupture life of alloy after heat treatment was 163.25 h. The segregation degree of alloying elements after heat treatment was decreased obviously.

Keywords

Superalloy Ni-based Single crystal Heat treatment 

Notes

Acknowledgements

The authors are acknowledge the financial support by National Nature Science Foundation of China (No. 51501193, 51601145).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Yichuan Liu
    • 1
    • 2
  • Zheng Tan
    • 1
  • Wenshu Tang
    • 3
  • Zhi Zheng
    • 1
  • Enze Liu
    • 1
  • Jian Tong
    • 1
  • Likui Ning
    • 1
  1. 1.Superalloys DivisionInstitute of Metal Research, Chinese Academy SciencesShenyangChina
  2. 2.School of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina
  3. 3.Xi’an Thermal Power Research Institute Co, LTDXi’anChina

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