Role of Structural Factor in Elevation of Wear Resistance of a Ni – Cr – B – Si Coating after Laser Treatment

被引：0
作者：
L. E. Afanas’eva
G. V. Ratkevich
M. V. Novoselova
机构：
[1] Tver State Technical University,
来源：
Metal Science and Heat Treatment | 2020年 / 61卷
关键词：
laser cladding; laser melting; multichannel CO; laser; NiCrBSi coating; wear resistance; dendritic parameter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Metallographic studies and tests for abrasive wear resistance are performed for a Ni – Cr – B – Si coating obtained by laser powder cladding with the help of a multichannel (40 beams) CO2 laser. Efficiency of repeated laser recrystallization of the surface layers of the coating is demonstrated. This treatment can be used to form structures with different values of dendritic parameter and affects positively the wear resistance of the coating. The wear characteristics are shown to depend linearly on the dendritic parameter, which may be used as a criterion of wear resistance of coatings.
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页码：581 / 587
页数：6
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