scholarly journals Effect of Heat Input on Stellite 6 Coatings on a Medium Carbon Steel Substrate by Laser Cladding

2015 ◽  
Vol 2 (4-5) ◽  
pp. 1747-1754 ◽  
Author(s):  
Alain Kusmoko ◽  
Druce Dunne ◽  
Huijun Li
Keyword(s):  
Carbon Steel ◽  
Laser Cladding ◽  
Heat Input ◽  
Steel Substrate ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Stellite 6

Experimental characterizations of laser cladding of iron- and nickel-based alloy powders on carbon steel 1045 for remanufacturing

2016 ◽  
Vol 232 (12) ◽  
pp. 1023-1035 ◽  
Author(s):  
Mingsan Xu ◽  
Jibin Jiang ◽  
Bingbing Li ◽  
Weilong Cong ◽  
Dongdong Zhang
Keyword(s):  
Carbon Steel ◽  
Laser Cladding ◽  
Orthogonal Design ◽  
Substrate Material ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Cladding Layer ◽  
Bonding Shear Strength ◽  
Steel Substrates ◽  
Cladding Layers

The purpose of this investigation is to test the laser cladding of different alloy powders onto 1045 medium-carbon steel substrates for parts remanufacturing. The types of alloy powder, laser output powers, and scanning speeds are selected as influencing factors to conduct laser cladding experiments with orthogonal design on the carbon steel 1045 substrate. Bonding shear strength and microhardness of the cladding layer and the substrate are tested and analyzed. The high resolution scanning electron microscopy and energy dispersive X-ray spectroscopy are also used to analyze cladding layers, microstructures, and elements. The experimental results show that a good metallurgical bond is formed between the cladding layer and the substrate without porous cracks and other defects. Shear stress intensity of nickel-based powder is two to three times higher than that of substrate material, while iron-based powder is five times higher than the substrate material. The type of the powder is the most significant factor and laser power is the least. The hardness of outer cladding layer is higher than that of bonding section and inner section. In the heat-affected zone, hardness is higher than that of the substrate material.

Modelling of laser cladding of medium carbon steel - a first approach

2004 ◽  
Vol 120 ◽  
pp. 405-412
Author(s):  
J. Ahlström ◽  
B. Karlsson ◽  
S. Niederhauser
Keyword(s):  
Carbon Steel ◽  
Laser Beam ◽  
Laser Cladding ◽  
Rapid Heating ◽  
Current Model ◽  
Substrate Material ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Railway Wheels

A model on laser cladding of medium carbon steel, used in railway wheels and rails, is developed and implemented. When the laser beam is scanned over the surface during the cladding operation, phase transformations occur in the topmost layer of the substrate material due to rapid heating and cooling. The hardened regions may later be annealed, either during subsequent passes of the laser beam or by for example induction heating. The current model is a first step towards judging the resulting microstructure and hardness in the heat affected zone under the clad.

Effect of powdered laser surfacing modes on structure and properties of wear-resistant coating and new medium carbon steel with yield strength 1500 MPa

2019 ◽  
pp. 107-116
Author(s):  
T. V. Knyazyuk ◽  
G. D. Motovilina ◽  
V. V. Bobyr ◽  
V. V. Ryabov
Keyword(s):  
Wear Resistance ◽  
Phase Composition ◽  
Laser Radiation ◽  
Carbon Steel ◽  
Yield Strength ◽  
Heat Input ◽  
Medium Carbon Steel ◽  
Laser Deposition ◽  
Structure And Properties ◽  
Medium Carbon

This paper studies coatings obtained by laser cladding of M2 powder material (Hoganas, Belgium) on a new B1500 medium-carbon steel. The analysis of defects (pores, cracks), microstructure, phase composition, microhardness of the deposited coatings depending on heat input of laser radiation was performed. The results of tests for wear resistance of coating samples, which allow selecting the optimal modes of laser deposition, are presented.

Co/B4C Composite Coatings on Medium Carbon Steel Produced by Diode Laser Cladding

Applied laser ◽  
2014 ◽  
Vol 34 (2) ◽  
pp. 91-94
Author(s):  
熊大辉 Xiong Dahui ◽  
闵大勇 Min Dayong ◽  
蔡菲菲 Cai Feifei ◽  
王喜 Wang Xi ◽  
叶兵 Ye Bin ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Diode Laser ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Medium Carbon Steel ◽  
Medium Carbon

Joining of Diamond Grains to Medium Carbon Steel with Ni-Base Powder during Laser Brazing

2010 ◽  
Vol 455 ◽  
pp. 392-396 ◽  
Author(s):  
Zhi Bo Yang ◽  
Ai Ju Liu ◽  
Jiu Hua Xu
Keyword(s):  
Carbon Steel ◽  
Powder Mixture ◽  
Steel Substrate ◽  
High Strength ◽  
Xrd Analysis ◽  
Medium Carbon Steel ◽  
Interfacial Region ◽  
Medium Carbon ◽  
Energy Dispersion Spectrometer ◽  
Joining Strength

In order to develop new generation brazed Diamond grinding wheels, the joining experiments of Diamond super abrasive grains and medium carbon steel using the powder mixture of Ni-Cr alloy as active brazing alloy are carried out via laser in an argon atmosphere. The relevant characteristics of the special powder mixture, the microstructure of the interfacial region, which are both the key factors for determining the joining strength among the Diamond grains, the filler layer and the steel substrate, are investigated extensively by means of scanning electron microscope (SEM) and energy dispersion spectrometer (EDS), as well X-ray diffraction (XRD) analysis. The formation mechanism of carbide layers was discussed. All the results indicate that high strength bonding between diamond grits and the steel substrate has been successfully realized because the chromium in the Ni-based alloy segregated preferentially to the surface of the diamond to form a chromium-rich reaction product Cr3C2, and the bond between the alloy and the Diamond was established through the reaction product.

scholarly journals The Thermal Conductivity of 8 Yttria Stabilized Zirconia and Mullite Thermal Barrier Coating on Medium Carbon Steel Substrate

2019 ◽  
Vol 9 (1) ◽  
pp. 5886-5892
Keyword(s):  
Thermal Conductivity ◽  
Carbon Steel ◽  
Thermal Barrier Coating ◽  
Steel Substrate ◽  
Medium Carbon Steel ◽  
Yttria Stabilized Zirconia ◽  
Thermal Barrier ◽  
Stabilized Zirconia ◽  
Medium Carbon ◽  
Barrier Coating

Thermal conductivity is one of the main features of a thermal barrier coating (TBC) that is important in making sure that the TBC gives its best functionality to the system. A good TBC has low thermal conductivity, so that the temperature can drop across the coating which allows the system to operate in extremely high temperatures. There are several factors that can influence the thermal conductivity of the TBC such as the type of ceramic material used, the deposition method and the physical features of the TBC itself. For this research, air plasma spray (APS) is used to deposit 8 wt% yttria stabilized zirconia (8YSZ) and mullite on medium carbon steel substrates to study their respective thermal conductivities. The aim here is to develop a heat shield using TBC to protect the electric motor in an electrical turbocompounding system. The characteristics of the deposited TBC such as microstructure, element composition, phases and thermal conductivity are studied. The thermal conductivity is reduced when medium carbon steel substrate deposited with TBC. The thermal conductivity of 8YSZ, mullite and uncoated sample at minute 60 is 0.868 W/mK, 0.903 W/mK and 1.057 W/mK, respectively. Therefore, the deposition of 8YSZ TBC can lower the thermal conductivity of the medium carbon steel heat shield.

Microstructure and Wear Properties of Self-Lubricating H-BN/Ni Coating by Laser Cladding

2010 ◽  
Vol 154-155 ◽  
pp. 617-620
Author(s):  
Wei Niu ◽  
Rong Lu Sun ◽  
Yi Wen Lei
Keyword(s):  
Laser Cladding ◽  
Sliding Wear ◽  
Steel Substrate ◽  
Wear Test ◽  
Medium Carbon Steel ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Medium Carbon ◽  
Test Conditions ◽  
Wear Tests

Self-lubricating h-BN/Ni coating was prepared on a medium carbon steel substrate by CO2 laser cladding using a powder mixture of NiCrBSi+5%h-BN(wt.%). Microstructures and phase structure of the coating were analyzed using SEM, EDS and XRD. Wear tests were carried out using a M100 pin-on-ring wear tester. The results show that h-BN/Ni coating has much superior war resistance and noticeably lower fiction coefficient under dry sliding wear test conditions.

Co/B4C Composite Coatings on Medium Carbon Steel Produced by Diode Laser Cladding

Applied laser ◽  
2014 ◽  
Vol 34 (2) ◽  
pp. 91-94
Author(s):  
熊大辉 Xiong Dahui ◽  
闵大勇 Min Dayong ◽  
蔡菲菲 Cai Feifei ◽  
王喜 Wang Xi ◽  
叶兵 Ye Bin ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Diode Laser ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Medium Carbon Steel ◽  
Medium Carbon
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