Diode Laser Cladding on A5052 Aluminium Alloy for Wear Resistance

2005 ◽  
Author(s):  
Shingo Iwatani ◽  
Yasuhito Ogata ◽  
Keisuke Uenishi ◽  
Kojiro F. Kobayashi ◽  
Akihiko Tsuboi
Keyword(s):  
Wear Resistance ◽  
Aluminium Alloy ◽  
Diode Laser ◽  
Laser Cladding ◽  
Co2 Laser ◽  
Reaction Layer ◽  
Heat Input ◽  
Aluminium Content ◽  
Alloy Substrate ◽  
Clad Layer

In order to improve a wear resistance of aluminium alloy, we proposed a diode laser cladding on the surface of a A5052 aluminium alloy. Firstly, an applicability of diode laser to laser cladding was evaluated. In this result, application of diode laser made it possible to obtain stable beads in low heat input compared with CO2 laser. According to the increase in aluminium content in the obtained clad layer, the microstructure of the clad layer changed as γ (8∼20%) → γ + α (10∼30%) → Fe3Al (30%∼). At the interface between the clad layer and the aluminium alloy substrate, the reaction layer consisting of Fe2Al5 and FeAl3 formed. In the abrasion wear the obtained clad layers exhibited a higher wear resistance compared with the aluminium alloy.

scholarly journals A contribution to laser cladding of Ti-6Al-4V titanium alloy

2019 ◽  
Vol 116 (6) ◽  
pp. 634 ◽  
Author(s):  
Samar Reda Al-Sayed Ali ◽  
Abdel Hamid Ahmed Hussein ◽  
Adel Nofal ◽  
Salah Ibrahim Hassab Elnaby ◽  
Haytham Elgazzar
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Laser Cladding ◽  
Continuous Wave ◽  
Interaction Time ◽  
Laser Interaction ◽  
Clad Layer ◽  
Powder Flow Rate ◽  
Wear Evaluation ◽  
Hardness Values

A wear resistant coating was successfully made on an annealed Ti-6Al-4V titanium alloy by laser surface cladding using 60 wt.% WC + wt.% 40 NiCrBSi powder blends. Coaxial laser cladding was performed by means of Yb:YAG disk laser with a 3-KW continuous wave. Different laser interaction times were attempted to get the optimal conditions for promising mechanical properties. The new contribution was to accomplish larger clad layer thickness with applying the shortest possible laser interaction time that can achieve superior clad layer properties. This will decrease energy consumption with an expected money saving which is an essential factor for successful engineering solutions. A high powder flow rate of 20 g.min−1 was intended in order to obtain a thick, nonporous and crack free clad layer. The clad samples were subjected to thorough microstructure investigations, in addition to microhardness and wear evaluation. The coating so produced exhibits multiple hardness values and exceptional wear resistance under adhesive/sliding wear conditions. The obtained results expose clad layer with superior quality that was achieved at a laser interaction time of 0.3 s. An enhancement in the microhardness values of the clad layers by more than fourfold was attained and the wear resistance was thus significantly improved.

High Power Diode Laser Cladding of Wear Resistant Metal Matrix Composite Coatings

2013 ◽  
Vol 199 ◽  
pp. 587-592 ◽  
Author(s):  
Damian Michał Janicki
Keyword(s):  
Diode Laser ◽  
Laser Cladding ◽  
High Power ◽  
Heat Input ◽  
Laser Power ◽  
Composite Coatings ◽  
Power Level ◽  
Erosive Wear ◽  
Homogeneous Distribution ◽  
Wear Properties

The paper describes the application of high power direct diode laser (HPDDL), with a rectangular laser beam spot of size 1.8x6.8 mm, for the cladding of Ni-based alloy (NiSiB)+WC composite coatings. The laser cladding process was carried out with a direct injection of cladding powder into the melt pool. The influence of parameters, such as laser power beam (heat input) and WC particles size in the cladding powder on the coatings microstructure and wear properties was investigated. The microstructure and morphology of the coatings were assessed by optical and scanning electron microscopy. Wear properties of the coatings were investigated using abrasive and erosive wear tests. The results showed that a proper selection of laser cladding parameters provides non-porous coatings with excellent metallurgical bonding and a homogeneous distribution of WC particles. The dissolution of WC particles increases with the size of WC particles decreasing in the cladding powder and increasing the laser power level (heat input). The coatings containing WC particles in size range of 100-200 µm provide the highestwear resistance under erosive and abrasiveconditions.

AMORPHOUS/NANOCRYSTALLIZATION OF TiN-TiB2 REINFORCED LASER CLAD COMPOSITES

2019 ◽  
Vol 26 (09) ◽  
pp. 1950057
Author(s):  
MOLIN SU ◽  
JIANING LI ◽  
XUEGANG WANG ◽  
ZHIYUAN LIU
Keyword(s):  
Wear Resistance ◽  
Liquid Metal ◽  
Amorphous Phase ◽  
Laser Cladding ◽  
Substrate Surface ◽  
Reinforced Composites ◽  
Alloy Substrate ◽  
Nanocrystalline Phases

Laser cladding (LC) of the Stellite6-BN-Cu-Y2O3 pre-placed powders on the Ti-6Al-4V alloy substrate formed the bulk TiN and needle-like Ti-B compounds reinforced composites, which improved the wear resistance of the substrate surface. The results showed that lots of the amorphous-nanocrystalline phases were produced in such composites; the proper content of Cu was used to refine microstructures, also a large number of the nanocrystals can be formed; the elements such as Co, Ni and Fe in Stellite6 favored the amorphous phase to be formed. The addition of Y2O3 improved the fluidity of the liquid metal, also retarding the growth of the dendrite, leading the fine microstructures to be formed, improving the property of the LC composites.

Laser Cladding of Fe-Cu Based Alloys on Aluminum

2007 ◽  
Vol 127 ◽  
pp. 331-336 ◽  
Author(s):  
Keisuke Uenishi ◽  
Yasuhito Ogata ◽  
Shingo Iwatani ◽  
Akira Adachi ◽  
Takehiko Sato ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Diode Laser ◽  
Laser Cladding ◽  
Surface Wear ◽  
Layer Formation ◽  
Dilution Ratio ◽  
Liquid Phases ◽  
Brittle Layer ◽  
Iron Based

For the improvement of a surface wear resistance of aluminum alloys, iron-based alloys were clad on the surface of an aluminum alloy by laser. By investigating the effect of CO2 and diode laser irradiation conditions on the formability of Fe-Cr-C clad layers, it was confirmed that the application of diode laser made it possible to obtain stable beads in low heat input compared with CO2 laser, which has been conventionally used for laser cladding. Besides, by optimizing the laser parameters, the dilution ratio of clad layers by Al substrate was minimized less than 10%. At the clad interface, the reaction layer consisting of Fe2Al5 and FeAl3 formed which caused cracks at the clad interface. Even by controlling laser conditions, this brittle layer formation could not suppressed. In this research, by using the immiscible Fe-Cu-Cr alloys as clad materials, Fe based clad layers were formed on Al substrate without any cracks at clad interface. By the effect of Marangoni motion of decomposed duplex liquid phases, Cu segregated between Al substrate and Fe based clad layers and suppressed the reaction between them.

scholarly journals Laser cladding of Inconel 625-based composite coatings

2018 ◽  
Vol 90 (9) ◽  
Author(s):  
Damian Janicki ◽  
Jacek Górka ◽  
Aleksandra Kotarska
Keyword(s):  
Diode Laser ◽  
Laser Cladding ◽  
Heat Input ◽  
Composite Coatings ◽  
Erosive Wear ◽  
Inconel 625 ◽  
Wear Behaviour ◽  
Reinforcing Particles ◽  
Laser Cladding Process ◽  
Input Level

Inconel 625-based composite coatings reinforced by WC and Cr3C2 particles have been produced via a diode laser cladding process. The effect of heat input level and morphology of the reinforcing particles on the degree of their dissolution has been established. Additionally, the influence of the morphology of the reinforcing particles on the erosive wear behaviour of the coatings was studied.

Investigation of Wear and Corrosion Characteristics of Stellite-6 and Stellite-21 Layers Deposited by Co-Axial Laser Cladding

2017 ◽  
Author(s):  
Debapriya Patra Karmakar ◽  
Muvvala Gopinath ◽  
Soham Harmalkar ◽  
Ashish Kumar Nath
Keyword(s):  
Wear Resistance ◽  
Mechanical Loading ◽  
Laser Cladding ◽  
Corrosion Behaviour ◽  
Dendritic Structure ◽  
Corrosion Resistant ◽  
Stellite 6 ◽  
Stellite 21 ◽  
Wear And Corrosion ◽  
Clad Layer

Layers of Stellite-6 and Stellite-21 were deposited on tool steel substrates using co-axial laser cladding process with a goal to obtain hard, wear and corrosion resistant coatings. Clad-layers of the two types of Stellite alloys were investigated and compared in terms of microstructure, hardness and sliding wear resistance. Corrosion tests were also performed to study their corrosion behaviour. Micrographs indicated that both the Stellite grades form dendritic structure. However, there were certain differences in composition of dendritic and interdendritic regions of tungsten (W) containing Stellite-6 and molybdenum containing Stellite-21. Stellite-6 clad-layer was found to be slightly harder than Stellite-21 clad-layer near the top surface. Wear resistance of Stellite-21found to be marginally higher than that of Stellite-6 due to lower coefficient of friction. However, Stellite-21layer was found to be more corrosion resistant. Hence, for application involving mechanical loading and wear, both Stellite-6 and Stellite-21 could be a good choice as a clad-material on engineering components; but if the component is going to be subjected to mechanical loading and wear under corrosive environment Stellit-21 could be a better choice.

Composition Design and Laser Cladding of Cu-Zr-Al Alloy Coating on the Magnesium Alloy

2010 ◽  
Vol 654-656 ◽  
pp. 1872-1875 ◽  
Author(s):  
Cun Shan Wang ◽  
Ting Li ◽  
Biao Yao ◽  
Rui Wang ◽  
Qing Wang
Keyword(s):  
Wear Resistance ◽  
Magnesium Alloy ◽  
Laser Cladding ◽  
High Hardness ◽  
Alloy Coating ◽  
Relative Content ◽  
Al Alloy ◽  
Optimized Design ◽  
Clad Layer ◽  
Metallurgical Bond

The cluster line criterion was used for optimized design of a Cu-Zr-Al alloy used as coating on the AZ91HP magnesium alloy by laser cladding. Results show that the coating mainly consists of an amorphous, Cu8Zr3, and Cu10Zr7 phases, of which the relative content of amorphous phase is estimated to be 61 %. The formation of the amorphous and intermetallics composite structure results in high hardness, good wear resistance and corrosion resistance. The interface between the clad layer and the substrate has good metallurgical bond.

scholarly journals Comparison of the Microstructure Evolution and Wear Resistance of Ti6Al4V Composite Coatings Reinforced by Hard Pure or Ni-plated Cubic Boron Nitride Particles Prepared with Laser Cladding on a Ti6Al4V Substrate

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 702 ◽  
Author(s):  
Shuren Fu ◽  
Lijing Yang ◽  
Pei Wang ◽  
Shaopeng Wang ◽  
Zhengxian Li
Keyword(s):  
Wear Resistance ◽  
Boron Nitride ◽  
Composite Coating ◽  
Laser Cladding ◽  
Reaction Layer ◽  
Photoelectron Spectroscopy ◽  
Composite Coatings ◽  
Cubic Boron Nitride ◽  
Wear Test ◽  
X Ray

Titanium alloy is a major structural material with excellent high specific strength in aerospace applications. Cubic boron nitride (cBN) is a synthetic wear-resistant material with high hardness, similar to that of diamond, that is used in mechanical cutting and grinding. In addition, the thermal stability of cubic boron nitride particles is much better than that of diamond. In order to further enhance the wear resistance of the Ti6Al4V alloy, the laser cladding (LC) technology characteristics of metallurgical bonding were used to prepare cubic boron nitride/Ti6Al4V and Ni-plated cubic boron nitride/Ti6Al4V composite coatings on Ti6Al4V substrates in this paper. However, in the laser molten pool, it is difficult to retain the raw properties of cubic boron nitride particles under laser radiation. Both composite coatings were analyzed using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The microstructures and interface bonding between cubic boron nitride particles and the Ti6Al4V matrix were examined using SEM, and the wear resistance and the worn track morphology of the composite coatings were evaluated using the ball-on-disc wear test and step profiler (WTM-2E). The results indicated that the Ni-plated cubic boron nitride/Ti6Al4V composite coating showed fewer thermal defects in comparison with the cubic boron nitride/Ti6Al4V coating. The Ni plating on the surface of cubic boron nitride particles was able to avoid the generation of thermal cracking of the cubic boron nitride particles in the composite coating. The TiN reaction layer was formed between the cubic boron nitride particles and Ti6Al4V matrix, which effectively prevented the further decomposition of the cubic boron nitride particles. The XRD and XPS results confirmed that the TiN reaction layer formed between the cubic boron nitride particles and Ti6Al4V. The Ni plating on the surface of the cubic boron nitride particles was also beneficial for increasing the wear resistance of the composite coating.

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