Robotized Fiber Laser Cladding of Steel Substrate by Metal Matrix Composite Powder at Cryogenic Conditions

2019 ◽  
Vol 8 (6) ◽  
pp. 20190069
Author(s):  
Aleksander Lisiecki ◽  
Dawid Ślizak ◽  
Adrian Kukofka
Keyword(s):  
Fiber Laser ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Laser Cladding ◽  
Metal Matrix ◽  
Composite Powder ◽  
Steel Substrate ◽  
Cryogenic Conditions

scholarly journals Manufacturing Technology and Properties of Fe/TaC Metal Matrix Composite Coatings Produced on Medium Carbon Steel Using Laser Processing—Preliminary Study on the Single Laser Tracks

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5367
Author(s):  
Dariusz Bartkowski
Keyword(s):  
Laser Beam ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Laser Processing ◽  
Metal Matrix ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Tantalum Carbide ◽  
Beam Power ◽  
Laser Beam Power

The paper presents study results of Fe/TaC metal matrix composite coatings produced on tool steel using laser processing of TaC pre-coat. The Fe/TaC coatings were produced in two steps. First, a pre-coat in the form of a paste based on tantalum carbide and water glass was made and then applied to the steel substrate. In the second step, the TaC pre-coat was remelted with steel substrate using a diode laser beam with a rated power of 3 kW. A constant scanning speed of the laser beam of 3 m/min and three types of laser beam power: 500 W, 800 W and 1100 W were applied. Tests were carried out on three different thicknesses of the TaC pre-coat: 30 µm, 60 µm and 90 µm. The influence of pre-coat thickness and laser beam power on the microstructure, chemical composition and microhardness were analyzed. A possibility of producing coatings with a characteristic composite structure was found, where the iron from the substrate became the matrix, and the introduced tantalum carbides—the reinforcing phase. It was found that too high power of the laser beam leads to complete melting of the introduced primary TaC particles. It was also found that the use of a thicker TaC pre-coat contributes to microhardness increase.

Online assessment of TiC decomposition in laser cladding of metal matrix composite coating

2017 ◽  
Vol 121 ◽  
pp. 310-320 ◽  
Author(s):  
Gopinath Muvvala ◽  
Debapriya Patra Karmakar ◽  
Ashish Kumar Nath
Keyword(s):  
Metal Matrix Composite ◽  
Composite Coating ◽  
Matrix Composite ◽  
Laser Cladding ◽  
Metal Matrix ◽  
Online Assessment
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