کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1606201 | 1516220 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An analysis of formation mechanism and nano-scale hardness of the laser-induced coating on Ni-17Mo-7Cr based superalloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An analysis of formation mechanism and nano-scale hardness of the laser-induced coating on Ni-17Mo-7Cr based superalloy An analysis of formation mechanism and nano-scale hardness of the laser-induced coating on Ni-17Mo-7Cr based superalloy](/preview/png/1606201.png)
چکیده انگلیسی
The Ni-17Mo-7Cr based superalloy was laser surface treated in argon atmosphere to enhance its tribological property. The formation mechanism of the coating was revealed and its mechanical properties were characterized. The microstructure and phase identification in the coating were investigated by scanning electron microscope, transmission electron microscope and X-ray diffraction techniques. The mechanical properties of the coating, i.e. elastic modulus and hardness, were measured by nanoindentation tests. The SiC particles were used as the coating materials. During the laser treatment, the SiC will first decompose and the decomposition products Si will trigger the formation of MoC carbides in the coating. After complete solidification, the coating consists of the MoC equiaxed dendrites, interdendritic Ni matrix and graphite. Lot of tiny MoC and chromium carbides can also occur in the interdendritic matrix. The elastic modulus and hardness of MoC are characterized to be 394.0Â GPa and 22.3Â GPa, which are far higher than that of the matrix (EÂ =Â 246.8Â GPa, HÂ =Â 5.3Â GPa). In addition, the volume fraction of hard MoC can reach about 45.3% in the coating. The method reported in this work will provide us a new approach to fabricate the wear-resisting coating.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 673, 15 July 2016, Pages 8-16
Journal: Journal of Alloys and Compounds - Volume 673, 15 July 2016, Pages 8-16
نویسندگان
Yanming He, Jianguo Yang, Wei Fu, Limei Wang, Zengliang Gao,