کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1571257 1514413 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
AFM study of the effects of laser surface remelting on the morphology of Al–Fe aerospace alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
AFM study of the effects of laser surface remelting on the morphology of Al–Fe aerospace alloys
چکیده انگلیسی

Laser beam welding has recently been incorporated into the fabrication process of aircraft and automobile structures. Surface roughness is an important parameter of product quality that strongly affects the performance of mechanical parts, as well as production costs. This parameter influences the mechanical properties such as fatigue behavior, corrosion resistance, creep life, etc., and other functional characteristics such as friction, wear, light reflection, heat transmission, lubrification, electrical conductivity, etc. The effects of laser surface remelting (LSR) on the morphology of Al–Fe aerospace alloys were examined before and after surface treatments, using optical microscopy (OM), scanning electron microscopy (SEM), low‐angle X‐ray diffraction (LA‐XRD), atomic force microscopy (AFM), microhardness measurements (Vickers hardness), and cyclic voltammetry. This analysis was performed on both laser-treated and untreated sanded surfaces, revealing significant differences. The LA‐XRD analysis revealed the presence of alumina, simple metals and metastable intermetallic phases, which considerably improved the microhardness of laser‐remelted surfaces. The morphology produced by laser surface remelting enhanced the microstructure of the Al–Fe alloys by reducing their roughness and increasing their hardness. The treated surfaces showed passivity and stability characteristics in the electrolytic medium employed in this study.


► The samples laser-treated and untreated showed significant differences.
► The La-XRD revealed the presence of alumina in Al–1.5 wt.% Fe.
► The laser-treated reducing the roughness and increasing the hardness.
► The laser-treated surfaces showed characteristic passive in the electrolytic medium.
► The laser-treated is a promising technique for applications technological.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 74, December 2012, Pages 64–76
نویسندگان
, , , , , ,