کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7128736 1461594 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of processing parameters and heat treatment on the mechanical properties of 18Ni300 manufactured by laser based directed energy deposition
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Influence of processing parameters and heat treatment on the mechanical properties of 18Ni300 manufactured by laser based directed energy deposition
چکیده انگلیسی
Laser based direct energy deposition is an additive manufacturing method that can produce or repair fully dense components. Maraging steels are well known for its superior strength and toughness with low carbon content. Here, 18Ni300 maraging components were fabricated by laser based directed energy deposition under argon atmosphere. The influence of processing parameters on the forming quality was studied based on orthogonal experiment and the results showed that the macroscopic forming generally performed well and the density of forming parts was positively correlated with laser energy density. The effects of different heat treatments on microstructure evolution and mechanical properties were explored after an hour of solid solution treatment in 830 °C and aging treatments for 1 h, 4 h, 7 h, 10 h respectively. It was found that with the extension of aging time, the directional dendritic columnar crystals transformed into lath martensites and the number of stomas decreased considerably. Meanwhile, the microhardness and tensile properties of the forming parts were promoted greatly after the heat treatments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 105, September 2018, Pages 171-179
نویسندگان
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