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.

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.

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

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

MICROSTRUCTURE AND WEAR RESISTANCE OF LASER-TREATED Ni–P–Al2O3 ELECTROLESS DEPOSITION COMPOSITE COATING

2011 ◽  
Vol 10 (01) ◽  
pp. 29-35 ◽  
Author(s):  
FANZHI KONG ◽  
JIANHUA YAO ◽  
XIAODONG HU
Keyword(s):  
Wear Resistance ◽  
Carbon Steel ◽  
Laser Beam ◽  
Electroless Deposition ◽  
Continuous Wave ◽  
Medium Carbon Steel ◽  
Abrasive Resistance ◽  
Medium Carbon ◽  
Equilibrium Phases ◽  
Plating Layer

A uniform Ni–P–Al2O3 electroless plating layer was produced on medium carbon steel and then scanned by high-power continuous wave CO2 laser beam. The entire coating is divided into three regions: laser-strengthened region, transition zone, and heat-affected zone. The strengthened coating shows good performance characterized by uniform components and refined microstructures. The main phase is comprised of Ni3P with some non-equilibrium phases. The reinforced particles, Al2O3 , are homogeneously dispersed in the coating. Its abrasive resistance also increases because of the Al2O3 particles.

scholarly journals Laser Effect on Fatique Resistance of Carbon Steel

2011 ◽  
Vol 8 (1) ◽  
pp. 44-47
Author(s):  
Baghdad Science Journal
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Laser Beam ◽  
Fatigue Resistance ◽  
Wave Length ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Laser Effect ◽  
Neodymium Yag Laser ◽  
Scanning Electron

Laser beam has been widely used to improve the mechanical properties of the metals. It used for cutting, drilling, hardening, welding……etc. The use of Laser beam has many features in accuracy and speeding in work, also in the treatment of metals locally, and in the places that is hard to reach by traditional ways. In this research a surface treatment was done to medium carbon steel (0.4%C) which is common kind of steel that is used in industry. Pulsing Neodymium -YAG Laser has been used and 1.06 micrometer wave length and 5 msec and the distance is about 30 centimeter between the exit area of the Laser beam from the system and the piece that treated . We are going to check the fatigue resistance for samples that is treated by Laser beam and Scanning Electron Microscope (SEM) and also we made check for the microstructure by using the light microscope and the SEM for the breaking samples. The results of checking showed that there is an improvement in the fatigue resistance after the treatment by the Laser beam. The results of microscope checking showed that the beginning of the failure is from the surface area and there is more than one level of the break.

The Effect of Grain Orientation on Micro Frictional of Medium Carbon Steel

2005 ◽  
Vol 495-497 ◽  
pp. 203-206 ◽  
Author(s):  
M. Reza Bateni ◽  
Marwan Azzi ◽  
Jerzy A. Szpunar ◽  
X. Wang ◽  
Dong Yang Li
Keyword(s):  
Carbon Steel ◽  
Coefficient Of Friction ◽  
Substrate Material ◽  
Medium Carbon Steel ◽  
Atomic Density ◽  
Wear Behaviour ◽  
Medium Carbon ◽  
The Coefficient Of Friction ◽  
Aisi 1045 ◽  
Individual Grains

The mechanical processing of metals results often in development of preferred orientation of grains or texture. On the other hand, the orientations of grains have a significant effect on the friction and wear behaviour of materials in contact. The objective of this investigation was to determine the crystallographic anisotropy of the coefficient of friction. Medium carbon steel AISI 1045 were selected as the substrate material. Automated orientation imaging analysis system (OIM) was used to identify orientations of grains in polycrystalline specimens. Micro-friction tests were carried out using a Tribocope, a combination of nano-mechanical probe and atomic force microscope with an electrochemical cell. The micro friction tests were performed along different crystallographic directions inside different grains.The obtained results have shown that the coefficient of friction for individual grains depends on crystallographic orientation, and that the coefficient of friction for higher atomic density planes is lower than that for lower atomic density planes.

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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