Details

Autor(en) / Beteiligte

• Chen, Bingqing
• Li, Yan
• Cai, Yan
• Li, Ran
• Pang, Shujie
• Zhang, Tao

Titel

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.