The Laser Surface Treatment Effective on Structural Properties for Invar Alloy (Fe-Ni) Type Prepared by Powder Technology

Abstract:

This research aimed to prepare (Fe-Ni) alloy by powder technology method for its technological and commercial importance. Iron and Nickel powders were tacking then their powders mixed and blended together with percent (63% Fe-37% Ni), then the powders compacted isostatic cold pressure at (6 ton). Laser surface treatment was done for the samples with different energies (0, 200, 260, 300) mJ and pulse time (10 sec) At a distance (100 cm). The X-ray diffractions test indicated that all samples have Face Center Cubic (F.C.C), and the samples at 300 mJ has best properties which include increase of phases intensity and decrease of grain size according to Debye-Scherrer equation. The Atomic Force Microscope (AFM) also shows better properties with increase laser energy. Where increased soft-ness of surface, homogeneity surface and decrease in grain size with increase laser energy. The laser analysis resulted that melting all surface molecules which led to improvement in the structural properties.

• Periodical: Key Engineering Materials (Volume 844)
• Pages: 97-103
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.844.97
• Online since: May 2020
• Authors: Omar Fadhil Abdullah, Orass Abdulhadi Hussein, Emad Toma Karash*
• Keywords: AFM, Invar Alloy, Laser Treatment, Powder Technology, Structural Properties, XRD

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