Effect of Laser Cladding Al3Ti-Based Coatings on the Wear and Corrosion Resistances of AA6063 Aluminum Alloy

2013 ◽  
Vol 652-654 ◽  
pp. 1897-1903 ◽  
Author(s):  
Huan He ◽  
Wei Hua Guo ◽  
Min Xiao ◽  
Xing Zhi Pang ◽  
Xiao Ming Shen ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Intermetallic Compound ◽  
Uniform Distribution ◽  
Laser Cladding ◽  
Wear And Corrosion ◽  
Corrosion Behaviors ◽  
Compound Coatings ◽  
Aa6063 Aluminum Alloy

Al3Ti-based intermetallic compound coatings were formed on AA6063 aluminum alloy by laser cladding. The microstructure, wear and corrosion behaviors were investigated. The results showed that, the laser cladding coatings were made up of Al3Ti dendrites, interdendritic α-Al and uniform distribution of TiC particles, and showed good bonding to the substrate. The microhardness, wear and corrosion resistances of the laser cladding coatings greatly increased compared to the substrate. And with the addition of TiC particles to the coating, the superficial properties are improved simultaneously.

Microstructure and Corrosion Behavior of Laser Cladding Al3Ti-Based Composite Coatings on AA6063 Aluminum Alloy

2013 ◽  
Vol 634-638 ◽  
pp. 2973-2978 ◽  
Author(s):  
Huan He ◽  
Yue Chun Fu ◽  
Wei Hua Guo ◽  
Min Xiao ◽  
Xing Zhi Pang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Intermetallic Compound ◽  
Uniform Distribution ◽  
Laser Irradiation ◽  
Corrosion Behavior ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Nacl Solution ◽  
Aa6063 Aluminum Alloy

Intermetallic compound Al3Ti-based IMC coatings were formed on AA6063 aluminum alloy by laser cladding. The microstructure and corrosion characteristics in 3.5% NaCl solution were investigated. The results show that, the laser cladding coating is made up of Al3Ti dendrites, interdendritic α-Al and uniform distribution of TiC which hardly melted during laser irradiation, and shows good bonding to the substrate. The cross distribution of Al3Ti and α-Al helps to avoid the generation of cracks in the coating. The corrosion resistance of the laser cladding coatings is greatly increased as compared with the substrate, which owes mainly to the existence of hard Al3Ti and TiC. And with the increasing of TiC content in the coating, the corrosion resistance is improved simultaneously.

Preparation, microstructure and tribological behavior of laser cladding NiAl intermetallic compound coatings

Wear ◽  
2012 ◽  
Vol 274-275 ◽  
pp. 298-305 ◽  
Author(s):  
Youjun Yu ◽  
Jiansong Zhou ◽  
Jianmin Chen ◽  
Huidi Zhou ◽  
Chun Guo ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Laser Cladding ◽  
Tribological Behavior ◽  
Compound Coatings

Tribological properties of laser cladding NiAl intermetallic compound coatings at elevated temperatures

2016 ◽  
Vol 104 ◽  
pp. 321-327 ◽  
Author(s):  
Youjun Yu ◽  
Jiansong Zhou ◽  
Shufang Ren ◽  
Lingqian Wang ◽  
Benbin Xin ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
Laser Cladding ◽  
Tribological Properties ◽  
Elevated Temperatures ◽  
Compound Coatings

Study on Preparing and Microstructure of the Fe3Al Intermetallic Compound Coatings by Laser Cladding

Applied laser ◽  
2014 ◽  
Vol 34 (2) ◽  
pp. 86-90
Author(s):  
程广萍 Cheng Guangping ◽  
孙建 Sun Jian ◽  
高国璨 Gao Guocan ◽  
丁汉林 Ding Hanlin
Keyword(s):  
Intermetallic Compound ◽  
Laser Cladding ◽  
Compound Coatings ◽  
Fe3al Intermetallic

Study on Preparing and Microstructure of the Fe3Al Intermetallic Compound Coatings by Laser Cladding

Applied laser ◽  
2014 ◽  
Vol 34 (2) ◽  
pp. 86-90
Author(s):  
程广萍 Cheng Guangping ◽  
孙建 Sun Jian ◽  
高国璨 Gao Guocan ◽  
丁汉林 Ding Hanlin
Keyword(s):  
Intermetallic Compound ◽  
Laser Cladding ◽  
Compound Coatings ◽  
Fe3al Intermetallic

scholarly journals Effect of Laser Power on Microstructure and Micro-Galvanic Corrosion Behavior of a 6061-T6 Aluminum Alloy Welding Joints

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 3
Author(s):  
Huiling Zhou ◽  
Fanglian Fu ◽  
Zhixin Dai ◽  
Yanxin Qiao ◽  
Jian Chen ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Power ◽  
Galvanic Corrosion ◽  
Gas Metal Arc Welding ◽  
Immersion Test ◽  
Intermetallic Particles ◽  
Metal Arc Welding ◽  
Corrosion Behaviors ◽  
Welding Joints ◽  
Corrosion Pits

The 6061-T6 aluminum alloy welding joints were fabricated using gas metal arc welding (GMAW) of various laser powers, and the effect of laser power on the microstructure evolution of the welding joints was investigated. The corrosion behaviors of 6061-T6 aluminum alloy welding joints were investigated in 3.5 wt% NaCl solution using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results showed that the micro-galvanic corrosion initiation from Mg2Si or around the intermetallic particles (Al-Fe-Si) is observed after the immersion test due to the inhomogeneous nature of the microstructure. The preferential dissolution of the Mg2Si and Al-Fe-Si is believed to be the possible cause of pitting corrosion. When the laser power reached 5 kW, the microstructure of the welded joint mainly consisted of Al-Fe-Si rather than the Mg2Si at 2 kW. The relatively higher content of Al-Fe-Si with increasing in laser power would increase the volume of corrosion pits.

Microstructural characterizations and wear and corrosion behaviors of laser-nitrided NAK80 mold steel

2021 ◽  
Vol 410 ◽  
pp. 126956
Author(s):  
Won-Sang Shin ◽  
Ahjin Sim ◽  
Seungwoo Baek ◽  
Soo Jin Choi ◽  
Heeshin Kang ◽  
...  
Keyword(s):  
Wear And Corrosion ◽  
Corrosion Behaviors

scholarly journals Heat Treatment-Induced Microstructure and Property Evolution of Mg/Al Intermetallic Compound Coatings Prepared by Al Electrodeposition on Mg Alloy from Molten Salt Electrolytes

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1407
Author(s):  
Tianyu Yao ◽  
Kui Wang ◽  
Haiyan Yang ◽  
Haiyan Jiang ◽  
Jie Wei ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Intermetallic Compound ◽  
Intermetallic Compounds ◽  
Mg Alloy ◽  
X Ray Diffraction ◽  
Electron Backscattered Diffraction ◽  
Alloy Matrix ◽  
Comprehensive Properties ◽  
Compound Coatings ◽  
Compound Coating

A method of forming an Mg/Al intermetallic compound coating enriched with Mg17Al12 and Mg2Al3 was developed by heat treatment of electrodeposition Al coatings on Mg alloy at 350 °C. The composition of the Mg/Al intermetallic compounds could be tuned by changing the thickness of the Zn immersion layer. The morphology and composition of the Mg/Al intermetallic compound coatings were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and electron backscattered diffraction (EBSD). Nanomechanical properties were investigated via nano-hardness (nHV) and the elastic modulus (EIT), and the corrosion behavior was studied through hydrogen evolution and potentiodynamic (PD) polarization. The compact and uniform Al coating was electrodeposited on the Zn-immersed AZ91D substrate. After heat treatment, Mg2Al3 and Mg17Al12 phases formed, and as the thickness of the Zn layer increased from 0.2 to 1.8 μm, the ratio of Mg2Al3 and Mg17Al12 varied from 1:1 to 4:1. The nano-hardness increased to 2.4 ± 0.5 GPa and further improved to 3.5 ± 0.1 GPa. The Mg/Al intermetallic compound coating exhibited excellent corrosion resistance and had a prominent effect on the protection of the Mg alloy matrix. The control over the ratio of intermetallic compounds by varying the thickness of the Zn immersion layer can be an effective approach to achieve the optimal comprehensive performance. As the Zn immersion time was 4 min, the obtained intermetallic compounds had relatively excellent comprehensive properties.

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