Microstructure And Oxidation Properties Of Laser Clad Ni70AL20Cr7Hf3 Alloys With Extended Solid Solution Of Hf

J. Mazumder; S. Sircar; C. Ribaudo; A, Kar

doi:10.1117/12.968899

16 January 1988 Microstructure And Oxidation Properties Of Laser Clad Ni₇₀AL₂₀Cr₇Hf₃ Alloys With Extended Solid Solution Of Hf

J. Mazumder, S. Sircar, C. Ribaudo, A, Kar

Author Affiliations +

Proceedings Volume 0952, Laser Technologies in Industry; (1988) https://doi.org/10.1117/12.968899
Event: Laser Technologies in Industry, 1988, Porto, Portugal

Abstract

Alloys coatings for superalloys for improved higher temperature (1200°C) service life under aggressive atmospheres are of great interest at present. There is a general consensus that addition of rare earths such as hafnium (Hf) to these alloys has a pronounced effect on the oxidation resistance properties at high temperatures. In situ laser cladding technique was used to produce Ni-Al-Cr-Hf alloys with extended solid solution of Hf in a near stoichiometric Ni₃Al matrix. A 10 kW CW CO₂ laser was used in conjunction with a screw-feed powder dispenser to perform the in situ cladding process.

Citation Download Citation

J. Mazumder, S. Sircar, C. Ribaudo, and A, Kar "Microstructure And Oxidation Properties Of Laser Clad Ni₇₀AL₂₀Cr₇Hf₃ Alloys With Extended Solid Solution Of Hf", Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); https://doi.org/10.1117/12.968899

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