Epitaxial growth and refined substructures of pure iron, nickel and their alloys after laser treatment

Pure iron, nickel and their alloys have been treated by a pulsed laser. The results show that epitaxial grains have been formed in the molten zones, but in the alloys, there exist refined dendrites. Fine subgrains composed of dislocation cells or tangles have been formed both in pure metals and thei...

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Bibliographic Details
Published in:Materials letters 1989-03, Vol.7 (12), p.449-452
Main Authors: Jiang, M., Zhang, J.S., Jiang, X.P., Huang, J.G., Sun, X.F., Ge, Y.L., Hu, Z.Q.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Other surface treatments
Physics
Production techniques
Specific materials
Surface treatment
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Summary:Pure iron, nickel and their alloys have been treated by a pulsed laser. The results show that epitaxial grains have been formed in the molten zones, but in the alloys, there exist refined dendrites. Fine subgrains composed of dislocation cells or tangles have been formed both in pure metals and their alloys. Our results also show that in the rapidly solidified regions, the epitaxial grains have not been refined, but the dendritic structures and subgrains have been refined obviously, which are related to the modification of the surface properties.
ISSN:0167-577X
1873-4979
DOI:10.1016/0167-577X(89)90050-5