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Lasers in Manufacturing and Materials Processing

, Volume 6, Issue 3, pp 317–331 | Cite as

Experimental Microstructure Evaluation of Rene 80 in Laser Cladding

  • L. Huarte-Mendicoa
  • X. Penaranda
  • A. Lamikiz
  • S. MoralejoEmail author
Article
  • 24 Downloads

Abstract

In this paper the input process parameters of Rene 80 laser cladding are correlated with the obtained microstructure. Different microstructures from single crystal (SX) to polycrystalline are revealed in function of the operating range, with the energy density governing the result. Several experiments are performed over plates and thin machined walls to characterise the behaviour of the system, showing independence of the microstructure with the base width. Metallographic analysis shows that the resulted material build-up matches microstructure between substrate and clad material. Microhardness evaluation presents constant results in SX samples, reaching values similar to those presented in tests with extra homogenization heat treatments. A same tendency is observed in melt pool minor axis monitorization. It exhibits a slight deviation from a fixed value for SX cladded material and shows a bigger shift with the apparition of equiaxed grains. The suitability of the SX operating window is verified in the repair of a blade tip with variable width.

Keywords

Laser cladding Single crystal Nickel-based superalloy Rene 80 Process monitoring Aero engine repair 

Notes

Acknowledgements

The authors wish to acknowledge the Spanish Ministerio de Economía y Competitividad for its support in the Retos-Colaboración project “Cladplus: Sistemas avanzados para la fabricación y reparación inteligente de componentes por plaqueado láser“(RTC-2014-2163-5).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.IK4-IDEKO Research CenterElgoibarSpain
  2. 2.Department of Mechanical EngineeringUniversity of the Basque Country ETSI, ETSII-UPVBilbaoSpain

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