کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5464654 1517567 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low power CO2 laser modified iron/nickel alloyed pure aluminum surface: Evaluation of structural and mechanical properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Low power CO2 laser modified iron/nickel alloyed pure aluminum surface: Evaluation of structural and mechanical properties
چکیده انگلیسی
Surface modification of metals is demanding for high strength industrial purposes. Weak mechanical properties of aluminum (Al) are disadvantageous for several applications and needs improvement. We modify the surface of pure Al substrate by alloying it with a thick layer of Fe-Ni, where a low power (27 watt) cw CO2 laser with varying exposure time (30, 40 and 50 s) is used. The exposure time dependent microstructure, surface morphology, and surface hardness of the achieved inter-metallic alloyed samples are determined. Microstructure analysis revealed the formation of different phases (Al0.9Ni1.1, AlNi3, Al6Fe, AlFe3, Al5Fe2 and Al76.8Fe14, Al5FeNi) with chemical heterogeneity. Alloyed sample displayed enhanced surface hardness (varied from 27 HV0.1 to 53.9 HV0.1) for extended laser radiation exposure time (from 30 to 50 s). A new inter-metallic compound aluminum-iron-nickel (Al-Fe-Ni) with considerably tougher surface is achieved. Our observations may contribute towards the development of laser assisted modification of metal surface alloying.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 315, 15 April 2017, Pages 24-31
نویسندگان
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