کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5464389 | 1517553 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure evolution and tribological properties of Co-based-VN alloy-Ti composite coatings by aging treatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Laser cladding Co-based-VN alloy-Ti composite coatings was aging treated at 550 °C, 650 °C and 750 °C, respectively. The phase constituents, microstructure, microhardness and wear resistance of Co-based-VN alloy-Ti composite coatings after aging treatment were investigated systematically. The results showed the phase constituents of Co-based-VN alloy-Ti composite coatings were not affected before and after aging treatment at 550 °C and 650 °C, and Ï-FeV phase disappeared after aging treatment at 750 °C. The intensities of Cr23C6, TiN and VC diffraction peaks were gradually improved as aging temperature increased. Number of short rod-shaped dendrites and equiaxed grains dispersed in the Co-based-VN alloy-Ti composite coatings was gradually improved as aging temperature increased, the distribution of the microstructure was more uniform, and the dislocation density was decreased. The microhardness and wear resistance of Co-based-VN alloy-Ti composite coatings were firstly reduced and then increased as aging temperature increased, the microhardness was increased by 7.9%, and the wear loss was reduced by 8.4%, for aging treatment at 750 °C. The abrasive mechanism of Co-based-VN alloy-Ti composite coatings after aging treatment was the abrasive wear.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 330, 1 December 2017, Pages 178-184
Journal: Surface and Coatings Technology - Volume 330, 1 December 2017, Pages 178-184
نویسندگان
Lin Ding, Shengsun Hu, Xiumin Quan, Junqi Shen,