Microstructure, formation mechanism and property characterization of Ti + SiC laser cladded coatings on Ti6Al4V alloy

Li, Neng; Yi, Xiong; Xiong, Hanguo; Shi, Guoqiang; Blackburn, Jon; Liu, Wei; Qin, Rui

doi:10.1016/j.matchar.2018.11.032

Cited by 88 publications

(19 citation statements)

References 34 publications

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“…Averages were calculated by multiple measurements in the same region to reduce error. Equation (1) was used to calculate the dilution rate afterwards [17,18]. The measured and calculated geometric characteristic results are also shown in Table 3.…”

Section: Methodsmentioning

confidence: 99%

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

Lian

Zhang

et al. 2019

Metals

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Laser cladding on curved surfaces is essential in industrial applications for restoration and remanufacturing of high-value parts. This study investigated the influence of different factors on clad width, clad height, and dilution rate in curved surface laser cladding with curved path. Mathematical models were developed using central composite designs to predict these geometric characteristics by controlling laser power, scanning speed, gas flow, and altering the outside radius of the cylindrical substrate. Analysis of variance and response surface methodology indicated that clad width increased with increasing laser power and reducing scanning speed. Clad height positively correlated to laser power and negatively correlated to the outside radius of the cylindrical substrate. Increasing the laser power while decreasing the scanning speed led to an increase in dilution rate. Afterwards, the geometric characteristics of the clad were improved by optimizing these factors with the target to maximize clad width and height as well as to minimize dilution rate. The difference between model predictions and experimental validations for clad width, clad height, and dilution rate were 3.485%, 3.863%, and 6.566%, respectively. The predicted accuracy was verified with these models, and they were able to provide theoretical guidance to predict and control the geometric characteristics of curved surface laser cladding with a curved path.

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Section: Methodsmentioning

confidence: 99%

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

Lian

Zhang

et al. 2019

Metals

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“…Fabrication reinforced by ceramics is helpful to enhance the tribological attributes of Ti-6Al-4V elements. Considering the interfaces between Ti-6Al-4V elements and ceramic reinforced facings, attributes like thermal expansion coefficient have an abrupt modification (Li, et al, 2019). As a result, of this unanticipated modification in properties, failures such as cracking and spalling are more probable to occur at the interfaces (Pettersson, et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

In-situ synthesis of TiC/Ti-6Al-4V-ELI composite by laser

Ramasobane

Mashinini

Masina³

2022

SATNT

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Titanium-based alloys are reported to offer up to 50% strength to weight ratio. These lands titanium-based alloys as a preferred material over steel and nickel-base super-alloys, where strength and stiffness are required. Regardless titanium-based alloys are prone to losing strength and stiffness at elevated temperature applications such as jet engines. This prompted a need for titanium matrix to be braced with a material with superior properties, such as ceramic. In-situ synthesis with laser metal deposition (LMD) of Ti-6Al-4V-ELI braced with discontinuous particulates of TiC resulted in improved hardness and microstructure. It is reported that an increase in the feed rate of TiC during the LMD process directly increases the hardness of the TiC/Ti-6Al-4V-ELI composite and refine the grain size of Ti-6Al-4V-ELI. Various fabrication methods and properties of Ti-6Al-4V are well documented in the literature. This paper focuses on the effect of TiC on the microstructure and hardness of Ti-6Al-4V-ELI.

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“…The abrasive mechanisms of the coating are mainly adhesive wear and oxidation wear during the dry sliding process. Li et al [20] prepared Ti + SiC coatings on the Ti6Al4V alloy by laser cladding. It was found that the hardness and wear resistance of the coating were significantly improved compared with the substrate.…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide on the Performance of Co-Based Coatings on Ti6Al4V Alloys by Laser Cladding

Miao

Cui

et al. 2020

Coatings

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In order to improve the hardness and wear resistance of Ti6Al4V alloys, Co-based coatings with different contents of graphene oxide (GO) were prepared on Ti6Al4V alloys by laser cladding. The effects of the graphene oxide content on the microstructure, hardness, and wear resistance were analyzed. It was found that carbides and undissolved graphene oxide films existed in the coating. Carbides contribute to grain refinement and improve the hardness of the coating. Graphene oxide films can improve the wear resistance of the coating. However, an excessive addition of graphene oxide affects the laser energy absorption of the coating. The results show that when the graphene oxide content is 0.5 wt.%, the performance of the coating is the best. Compared with the Co-based coating without graphene oxide addition, the hardness increased by 32.3%, the friction coefficient decreased by 27.2%, and the wear rate decreased by 66.5%.

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Microstructure, formation mechanism and property characterization of Ti + SiC laser cladded coatings on Ti6Al4V alloy

Cited by 88 publications

References 34 publications

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

In-situ synthesis of TiC/Ti-6Al-4V-ELI composite by laser

Effect of Graphene Oxide on the Performance of Co-Based Coatings on Ti6Al4V Alloys by Laser Cladding

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Microstructure, formation mechanism and property characterization of Ti + SiC laser cladded coatings on Ti6Al4V alloy

Cited by 88 publications

References 34 publications

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

Investigation of Geometric Characteristics in Curved Surface Laser Cladding with Curve Path

In-situ synthesis of TiC/Ti-6Al-4V-ELI composite by laser

Effect of Graphene Oxide on the Performance of Co-Based Coatings on Ti6Al4V Alloys by Laser Cladding

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Microstructure, formation mechanism and property characterization of Ti + SiC laser cladded coatings on Ti6Al4V alloy