کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5497402 1530941 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Laser Cladding Parameters on the Microstructure and Properties of High Chromium Hardfacing Alloys
ترجمه فارسی عنوان
اثر پارامترهای پوشش لیزر بر ریزساختار و ویژگیهای آلیاژهای سخت کرومیوم بالا
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
Mechanical components operating under high-stress and high-temperature environments require enhanced mechanical and tribological properties. In this research, different high chromium steels (Fe-Cr-C-Ni-Mo-Mn) have been coated over a 316L substrate using coaxial laser cladding. Optimized properties of the clad (such as adhesion, compactness, microstructure and dilution rate) have been obtained by a broad parameter search (laser power, powder feeding rate, scanning speed and preheating). Varying such parameters induces change in the microstructure, chemical distribution, morphology and properties of deposits. These have been thoroughly characterized in terms of metallurgical structure, phase compositions and functional properties using dedicated metallurgical mechanical and wear analysis. Samples obtained by laser cladding and plasma arc-transferred cladding have been compared. Laser cladding exhibits a significant strengthening mechanism for this hardfacing alloy. This results from a finer dendritic structure with a modified Chromium and Molybdenum precipitations distribution in the eutectic interdendritic phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 83, 2016, Pages 684-696
نویسندگان
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