The Laser Alloying Process of Ductile Cast Iron Surface with Titanium Powder in Nitrogen Atmosphere

被引：11

作者：

Lont, Aleksandra ^{[1
]}

Gorka, Jacek ^{[1
]}

Janicki, Damian ^{[1
]}

Matus, Krzysztof ^{[2
]}

机构：

[1] Silesian Tech Univ, Fac Mech Engn, Welding Dept, Konarskiego St 18A, PL-44100 Gliwice, Poland

[2] Silesian Tech Univ, Fac Mech Engn, Mat Res Lab, Konarskiego St 18A, PL-44100 Gliwice, Poland

来源：

COATINGS | 2022年 / 12卷 / 02期

关键词：

laser alloying; ductile cast iron; metal matrix composite; solid particle erosion; EROSION; MICROSTRUCTURE;

D O I：

10.3390/coatings12020227

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The article presents the results of the laser alloying process of a ductile cast iron EN-GJS 350-22 surface with titanium powder in nitrogen atmosphere. The aim of this research was to test the influence of nitrogen atmosphere on the structure and properties of the ductile cast iron surface layer produced by a laser alloying process with titanium. The laser alloying process was conducted using a Rofin Sinar DL020 2 kW high-power diode laser (HPDDL) with rectangular focus and uniform power density distribution in the focus axis. The tests of the produced surface layers included macrostructure and microstructure observations, X-ray diffraction (XRD) analysis, energy-dispersive spectroscopy (EDS) on scanning electron microscope (SEM) and transmission electron microscope (TEM), Vickers hardness and solid particle erosion according to ASTM G76-04 standard. As a result of the laser alloying process in nitrogen atmosphere with titanium powder, the in situ metal matrix composite structure reinforced by TiCN particles was formed. The laser alloying process of ductile cast iron caused the increased hardness and erosion resistance of the surface.

引用

页数：13

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