Effect of magnetic field on the microstructure and wear properties of TiB2/metal composite layers synthesized in situ by laser cladding on Ti–6Al–4V alloy

2021 ◽  
Author(s):  
Kang Qi ◽  
Yong Yang ◽  
Wanxu Liang ◽  
Kang Jin ◽  
Li Xiong
Keyword(s):  
Magnetic Field ◽  
Laser Cladding ◽  
Metal Composite ◽  
Wear Properties ◽  
Composite Layers

Preparation and Wear Properties of (Al3Zr+ZrB2)P/2124 Composites Material with In Situ Process

2012 ◽  
Vol 616-618 ◽  
pp. 1736-1740
Author(s):  
Lei Jiao ◽  
Yu Tao Zhao ◽  
Zhong Zhong Zhang ◽  
Yan Wei Yang ◽  
Ming Rui Zhang
Keyword(s):  
Magnetic Field ◽  
Composite Materials ◽  
Sliding Friction ◽  
Testing Machine ◽  
Test Methods ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
Matrix Metal ◽  
The Matrix

With pulse magnetic field, it is use 2124-K2ZrF6-KBF4 as matrix metal to produce chemical reaction to gain (Al3Zr+ZrB2) p/2124 composite materials in this paper. In this paper, For the sake of researching the microstructure, the morphology, the size and the matrix distribution characteristics of the reinforced grain of prepared composite material , those test methods are used, such as optical microscopy, scanning electron microscope, X-ray diffraction analysis and so on. We will research the magnetic field strength how to influence size and distribution of Al3Zr +ZrB2 particle and the abrasion performance of (Al3Zr+ZrB2)P/2124 composite materials in the room temperature. Wear experiment is proceeding in the CETR UMT 3-V the testing machine and sliding friction is friction way with pin-disc but without lubricant, then analyzes the wear mechanism.

scholarly journals MICROSTRUCTURE EVOLUTION OF IN SITU COMPOSITE COATINGS FABRICATED BY LASER CLADDING WITH DIFFERENT POWERS

2021 ◽  
Vol 55 (3) ◽  
Author(s):  
Youfeng Zhang ◽  
Guangyu Han ◽  
Shasha He ◽  
Wanwan Yang
Keyword(s):  
Matrix Composite ◽  
Laser Cladding ◽  
Microstructure Evolution ◽  
Laser Power ◽  
Composite Coatings ◽  
Wear Properties ◽  
Fine Microstructure ◽  
Titanium Alloy Substrate ◽  
Friction And Wear Properties

In situ reaction-synthesized TiB-reinforced titanium-matrix composite coatings were fabricated using the rapid, non-equilibrium synthesis technique of laser cladding. The Ti and B mixture was the original powders, while the Ti-matrix composite coatings enhanced with TiB were treated on a Ti-6Al-4V surface with different laser scan powers of 2.5 kW, 3.0 kW and 3.5 kW. The phase composition, microstructure evaluation, and microhardness of the cladding coatings were investigated by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and microhardness. The composite coatings mainly consist of black fishbone-shaped -Ti dendrites and white needle-like TiB phases. The microstructure evolution from the top to the bottom of the coatings was investigated. The TiB reinforcement dispersed homogeneously in the composite coatings and a fine microstructure was obtained in a sample fabricated with a laser power of 3.0 kW. The microhardness of the cladding coatings fabricated by different powders was over 2-fold greater than that of the Ti-6Al-4V titanium alloy substrate and achieved a maximum average of 792.2 HV with the laser power of 3.0 kW. The microstructures and properties of the coatings were changed by adjusting of the laser cladding power. The effects of the laser scan power on the microstructure, hardness and friction and wear properties of the laser cladding coatings were investigated and discussed.

FABRICATION OF IN SITUFe-Ti-B COMPOSITE COATING BY LASER CLADDING

2013 ◽  
Vol 20 (03n04) ◽  
pp. 1350034 ◽  
Author(s):  
BAOSHUAI DU
Keyword(s):  
Laser Cladding ◽  
Room Temperature ◽  
Composite Coatings ◽  
Solidification Path ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
X Ray ◽  
Mild Carbon Steel ◽  
Liquid Precipitation

Laser cladding was applied to deposit in situ Fe - Ti - B composite coatings on mild carbon steel with precursor of ferrotitanium, ferroboron and pure Fe alloy powders. The composite coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron probe microanalysis (EPMA). Wear resistance of the laser-cladded Fe - Ti - B coatings was evaluated under dry sliding condition at room temperature using block-on-ring wear tester. Results indicate that in situ reinforcements of TiB 2 and Fe 2 B can be synthesized in the Fe - Ti - B coatings. The amount of TiB 2 increases with the increase of content of ferrotitanium and ferroboron in the precursor. Reinforcements are formed through the liquid-precipitation route following the solidification path of the Fe - Ti - B system. Hardness and wear properties of the coatings improved significantly in comparison to the as-received substrate due to the presence of hard reinforcements.

Effect of in situ NbC on Microstructure and Wear Properties of Laser Cladding Co-Based Coatings

2020 ◽  
Vol 47 (3) ◽  
pp. 0302010
Author(s):  
易伟 Yi Wei ◽  
陈辉 Chen Hui ◽  
吴影 Wu Ying ◽  
陈勇 Chen Yong
Keyword(s):  
Laser Cladding ◽  
Wear Properties

In Situ Formation of TiC Reinforced Intermetallic-Matrix Composite Layers Produced by Laser Cladding

2007 ◽  
Vol 336-338 ◽  
pp. 1380-1382 ◽  
Author(s):  
Ding Fan ◽  
Jian Bin Zhang ◽  
Yao Ning Sun ◽  
Jing Jie Dai ◽  
Rui Fu
Keyword(s):  
Laser Cladding ◽  
X Ray Diffraction ◽  
X Ray ◽  
Intermetallic Matrix ◽  
Composite Layers ◽  
Intermetallic Matrix Composite ◽  
In Situ Formation ◽  
Intermetallic Composite ◽  
Scanning Electron

Laser cladding technique was used to form Ni3(Si,Ti) intermetallic composite coating reinforced by in-situ formation TiC particles on Ni-based superalloy substrate. The experimental results showed that an excellent bonding between the coating and the substrate was ensured by a strong metallurgical interface. The clad coating was very well and free from cracks and pores. By means of scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD), the effect of Ti-C addition to the microstructure and microhardness of the coating was investigated. The microstructure of the coating was mainly composed of Ni(Si), Ni3(Si,Ti) and TiC. The average microhardness of the coating was improved with increasing the Ti-C content. The microhardness was up to 780Hv when Ti-C addition was 20 wt. pct, which was much greater than that of Ni-based superalloy substrate.

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