کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7128620 1461594 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Functionally graded properties in directed-energy-deposition titanium parts
ترجمه فارسی عنوان
ویژگی های درجه بندی شده عملکردی در قسمت های تیتانیوم رسوب مستقیم انرژی
کلمات کلیدی
رسوب انرژی مستقیم، دارایی کارکردی درجه بندی شده، ترمیم لیزری، نیترید تیتانیوم، سختی خشونت،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
The directed energy deposition (DED) process can directly build full-density, high-performance, complex metal parts by melting metal powder with laser scanning. Functionally graded properties are characterized by gradual property variations over the volume according to the designed pattern. This study investigated the functionally graded properties obtained from DED of titanium powder. The formation of titanium nitride in the laser-melted layer has a strong potential to increase the hardness of the titanium alloy. Thus, the hardness of the deposited part was controlled by changing the concentration of nitrogen in the shielding gas. Furthermore, the effect of laser surface remelting on the deposited layer was investigated to control the surface qualities of the part, such as the roughness, hardness, and surface colour. From the analysis, a functionally graded part having variable hardness was obtained on a trial basis, and the proposed method is shown to be feasible with a high degree of reliability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 105, September 2018, Pages 80-88
نویسندگان
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