Grain-Boundary Interaction between Inconel 625 and WC during Laser Metal Deposition

被引：15

作者：

Huebner, Jan ^{[1
]}

Kata, Dariusz ^{[1
]}

Rutkowski, Pawel ^{[1
]}

Petrzak, Pawel ^{[2
]}

Kusinski, Jan ^{[2
]}

机构：

[1] AGH Univ Sci & Technol, Dept Ceram & Refractories, Fac Mat Sci & Ceram, Al Mickiewicza 30, PL-30059 Krakow, Poland

[2] AGH Univ Sci & Technol, Dept Surface Engn & Mat Characterisat, Fac Met Engn & Ind Comp Sci, Al Mickiewicza 30, PL-30059 Krakow, Poland

来源：

MATERIALS | 2018年 / 11卷 / 10期

关键词：

metal matrix composites; laser metal deposition; Inconel; 625; additive manufacturing; laser processing; MECHANICAL-PROPERTIES; COMPOSITE COATINGS; WEAR-RESISTANCE; MICROSTRUCTURE; SUPERALLOY; ALLOY; SOLIDIFICATION; PERFORMANCE; DISSOLUTION; PARAMETERS;

D O I：

10.3390/ma11101797

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the laser metal deposition (LMD) of the Inconel 625-tungsten carbide (WC) metal matrix composite was investigated. The composite coating was deposited on Inconel 625 substrate by powder method. A powder mixture containing 10 wt% of WC (5 mu m) was prepared by wet mixing with dextrin binder. Coating samples obtained by low-power LMD were pore- and crack-free. Ceramic reinforcement was distributed homogenously in the whole volume of the material. Topologically close-packed (TCP) phases were formed at grain boundaries between WC and Inconel 625 matrix as a result of partial dissolution of WC in a nickel-based alloy. Line analysis of the elements revealed very small interference of the coating in the substrate material when compared to conventional coating methods. The average Vickers hardness of the coating was about 25% higher than the hardness of pure Inconel 625 reference samples.

引用

页数：12

共 38 条

[1] Effect of carbide dissolution on the corrosion performance of tungsten carbide reinforced Inconel 625 wire laser coating [J].