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Surface vitrification of alloys by laser surface treatment
Ist Teil von
Journal of alloys and compounds, 2012-01, Vol.511 (1), p.215-220
Ort / Verlag
Kidlington: Elsevier B.V
Erscheinungsjahr
2012
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
► Amorphous surfaces were synthesized by laser surface treatment for Zr- and Cu-based alloys. ► Influences of GFA of alloys and laser processing parameters on glass formation were studied. ► The laser surface treated Cu
60Zr
30Ti
10 alloy exhibited a gradient structure. ► Temperature distributions and thermal profiles during the laser process were simulated. ► The formation mechanism of the gradient structure is clarified.
With laser surface treatment (LST) method, the surfaces of Zr-, Cu-, Fe- and Al-based alloys were melted and amorphous or amorphous–crystalline composite structures were synthesized, which were related to the different glass-forming ability of the alloys. Influences of laser processing parameters on glass formation for Cu
60Zr
30Ti
10 alloy were investigated and the laser treated alloy exhibited a gradient structure: amorphous surface, amorphous–crystalline composites transitional region and crystalline substrate. Temperature distributions and thermal profiles of the treated Cu
60Zr
30Ti
10 alloy during the laser process were simulated using finite volume method. The formation mechanism of the gradient structure is discussed based on the experimental and simulated results.