Numerical Simulation of Hot Extrusion Process of GH3625 Alloy Tubes

  • Yutian Ding
  • Bin Meng
  • Xin Gao
  • Yubi Gao
  • Zhengyi Dou
  • Zhi Jia
Conference paper

Abstract

In order to obtain GH3625 superalloy seamless pipe, the GH3625 superalloy seamless pipe with Φ28 × 5.5 mm was developed through short-flow hot extrusion forming and cold rolling molding process. And a comprehensive evaluation to the microstructure and mechanical properties for GH3625 superalloy seamless pipe was conducted. The results show that hollow tube has been successfully extruded the GH3625 superalloy tube with Φ43 × 9.5 mm under the condition of fixed extrusion speed of 50 mm/s, preheating temperature of 1150 °C and extrusion ration of 7.4. The alloy tube is composed of a small amount of deformation twin and a large number of equiaxed crystal mixed crystal structure, the average grain size is about 8.6, and the tensile strength at room temperature and elongation at break are 771 MPa and 52.33%, respectively, and have good cold working performance and mechanical properties. The performance of GH3625 superalloy seamless pipe after cold rolling and annealing is in accordance with ASTM-B163-04 international standard.

Keywords

GH3625 alloy Hot extrusion Numerical simulation Orthogonal experiment 

Notes

Acknowledgements

This study was funded by the National Natural Science Foundation of China (No. 51661019), The Science and Technology Projects of Gansu Province (No. 145RTSA004), the State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology.

References

  1. 1.
    S.K. Rai, A. Kumar, V. Shankar, Characterization of microstructures in Inconel 625 using X-ray diffraction peak broadening and lattice parameter measurements, J. Scripta Materialia. 51 (2004) 59–63.Google Scholar
  2. 2.
    J.B. Singh, A. Verma, B. Paul, Failure of Alloy 625 tube stub ends–Effect of primary nitrides, J. Engineering Failure Analysis. 32.3 (2013) 36–247.Google Scholar
  3. 3.
    W.D. Cao, R. Kennedy, Role of Chemistry in 718-type Alloys: Allvac 718 Plus TM Alloy Development, J. The Minerals, Metals & Materials Society. (2004) 91–99.Google Scholar
  4. 4.
    S. Zhang, Z. Wang, B. Qiao, Processing and Microstructural Evolution of Superalloy Inconel 718 during Hot Tube Extrusion, J. Journal of Materials Science & Technology. 21.2 (2005) 175–178.Google Scholar
  5. 5.
    Z.T. Wang, Y.G. Deng, S.H. Zhang, Numerical Simulation of Tube Forming of IN690 Superalloy, J, Special-cast and Non-ferrous Alloys. 31.10 (2011) 895–898.Google Scholar
  6. 6.
    J. Wang, J.X. Dong, M.C. Zhang, Numerical Simulation for Optimization if the Extrusion Process of GH4169 Trubs, J. Journal of University of Science and Technology Beijing. 32.1 (2010) 83–88.Google Scholar
  7. 7.
    Dang L, Yang H, Guo L G, Simulation research of damage behavior of lame-scale thick-walled Inconel 625 pipe during extrusion process, J. Journal of Plasticity Engineering. 22.5 (2015) 29–34.Google Scholar
  8. 8.
    L. Dang, H. Yang, L.G. Guo, DRX rules during extrusion process of large-scale thick-walled Inconel 625 pipe by FE method, J. Transactions of Nonferrous Metals Society of China. 25.9 (2015) 3037–3047.Google Scholar
  9. 9.
    S.C. Yan, High-temperature High-speed Hot Deformation Behavior of Inconel625 Alloy and Optimization of High-speed Extrusion Process for Tube of This Alloy, D. Dalian University of Technology. (2010).Google Scholar
  10. 10.
    J.L. Wen, H. Ding, F.R. Cao, Extrusion and Drawing Technology of Nonferrous Metals, M. Chemical Industry Press, 2007.Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Yutian Ding
    • 1
  • Bin Meng
    • 1
  • Xin Gao
    • 1
  • Yubi Gao
    • 1
  • Zhengyi Dou
    • 1
  • Zhi Jia
    • 1
  1. 1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous MetalsLanzhou University of TechnologyLanzhouChina

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