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Precipitation Behaviour and Its Strengthening Effect of Maraging Steel in Laser Cladding Remanufacturing

  • Ke Ren
  • Yiming RongEmail author
  • Shaopeng Wei
  • Wei Xing
  • Gang Wang
Conference paper
  • 483 Downloads
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Laser hot-wire cladding is one of the major remanufacturing processes used to repair damaged compressor impellers. The strength of cladding layer and heat affected zone (HAZ) is essential to the functionality and reliability of repaired parts. This paper makes a qualitative explanation of strength variation by analyzing the microstructure of the substrate. A thermal simulation experiment was conducted to investigate the effect of aging temperature on the strength of the substrate. Results showed that the strength trend in the cladding layer and HAZ varied with respect to the aging temperature as a result of precipitation behavior. Heat treatment temperature was divided into three intervals depending on its effect. Further, the tip temperature of substrate solid solution was found out to be 500 °C. Precipitates coarsening and dissolution in aging state substrate led to heat affected zone softening.

Keywords

Laser hot-wire deposition Cladding layer Heat affected zone Aging state Precipitation behavior Mechanical property 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (U1537202 & 51575305) and the Pre-Research Program in the National 13th Five-Year Plan (41423060102).

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Ke Ren
    • 1
    • 2
  • Yiming Rong
    • 1
    • 2
    Email author
  • Shaopeng Wei
    • 3
  • Wei Xing
    • 1
  • Gang Wang
    • 3
  1. 1.School of Mechatronics EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Department of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhenChina
  3. 3.State Key Laboratory of Tribology & Institute of Manufacturing Engineering, Department of Mechanical EngineeringTsinghua UniversityBeijingChina

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