Effect of Si content on microstructure and tribological properties of Ti5Si3/TiC reinforced NiTi laser cladding coatings

Su, Wei‐Ming; Cui, Xiufang; Yang, Yuyun; Guan, Yajie; Zhao, Yaoyao Fiona; Wan, Simin; Li, Jian; Guo, Jingjie

doi:10.1016/j.surfcoat.2021.127281

Cited by 23 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This indicates the SH sample obtains more TiNi phases. At the laser-induced hightemperature melt pool, Ni3B decomposition may occur, and the B element then first forms TiB with Ti after solidification as the Gibbs free energy ΔG of TiB is more negative than Ni3B [18,27]. The other part of the Ti element forms Ti2Ni and TiNi major phases with Ni, which can be detected via XRD in all three deposition tracks shown in Figure 7c-e.…”

Section: Resultsmentioning

confidence: 91%

“…Wang et al [15] applied wire deposition using a combination of Ti and Ni wire. While for powder-based laser surface modification processes, a preplacing powder approach was previously applied in the laser cladding of Ti-6Al-4V alloys to create multiple types of Ti-Ni intermetallics, other hard phases, such as TiB 2 and TiC, can be involved according to the easy-to-mix feature of powder materials [17,18]. On the other hand, using the blown powder method during laser cladding has several advantages.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesizing Ti–Ni Alloy Composite Coating on Ti–6Al–4V Surface from Laser Surface Modification

Chen

Newkirk

Liou

2023

Metals

View full text Add to dashboard Cite

In this work, a Ni-alloy Deloro-22 was laser-deposited on a Ti–6Al–4V bar substrate with multiple sets of laser processing parameters. The purpose was to apply laser surface modification to synthesize different combinations of ductile TiNi and hard Ti2Ni intermetallic phases on the surface of Ti–6Al–4V in order to obtain adjustable surface properties. Scanning electron microscopy, energy dispersion spectroscopy, and X-ray diffraction were applied to reveal the deposited surface microstructure and phase. The effect of processing parameters on the resultant compositions of TiNi and Ti2Ni was discussed. The hardness of the deposition was evaluated, and comparisons with the Ti–6Al–4V bulk part were carried out. They showed a significant improvement in surface hardness on Ti–6Al–4V alloys after laser processing, and the hardness could be flexibly adjusted by using this laser-assisted surface modification technique.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Synthesizing Ti–Ni Alloy Composite Coating on Ti–6Al–4V Surface from Laser Surface Modification

Chen

Newkirk

Liou

2023

Metals

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the existing procedures for obtaining in situ Ti 5 Si 3 and other intermetallic compounds are relatively complex. The combination of Si and Ti elements using techniques like wire–powder synergy and the in situ generation of Ti–Si intermetallic compounds holds significant research value [ 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Si-TC4 Composite Coatings by High-Speed Wire-Powder Laser Cladding

Men,

Sun,

et al. 2024

Materials

View full text Add to dashboard Cite

The hardness and wear resistance of the surface of TC4 titanium alloy, which is widely used in aerospace and other fields, need to be improved urgently. Considering the economy, environmental friendliness, and high efficiency, Si-reinforced Ti-based composite coatings were deposited on the TC4 surface by the high-speed wire-powder laser cladding method, which combines the paraxial feeding of TC4 wires with the coaxial feeding of Si powders. The microstructures and wear resistance of the coatings were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), Vickers hardness tester, and friction and wear tester. The results indicate that the primary composition of the coating consisted of α-Ti and Ti5Si3. The microstructure of the coating underwent a notable transformation process from dendritic to petal, bar, and block shapes as the powder feeding speed increased. The hardness of the composite coatings increased with the increasing Si powder feeding rate, and the average hardness of the composite coating was 909HV0.2 when the feeding rate reached 13.53 g/min. The enhancement of the microhardness of the coatings can be attributed primarily to the reinforcing effect of the second phase generated by Ti5Si3 in various forms within the coatings. As the powder feeding speed increased, the wear resistance initially improved before deteriorating. The optimal wear resistance of the coating was achieved at a powder feeding rate of 6.88 g/min (wear loss of 2.55 mg and friction coefficient of 0.12). The main wear mechanism for coatings was abrasive wear.

show abstract

“…It is an effective method to improve the performance of Ni-based coatings by adding reinforced ceramic particles [23]. The ceramic particles mainly include oxides [24], carbides [25], silicides [26], borides [27] and nitrides [28] of transition metal elements. Among these ceramic phases, WC has a high melting point, high hardness, a low thermal expansion coefficient and good wettability with nickel-based alloys [29].…”

Section: Introductionmentioning

confidence: 99%

Research on Wear and Corrosion Resistance of Ni60-WC Coating Fabricated by Laser on the Preheated Copper Alloy

Liu

Li³

2022

Coatings

View full text Add to dashboard Cite

The copper alloy is widely used to prepare pipes in ocean engineering. The surface is washed and corroded by seawater for a long time, which gradually shortens the service life of the condenser tube. In order to improve the wear and corrosion resistance of copper alloy, a Ni60-WC coating was fabricated on a preheated copper alloy by laser cladding. Experiments on the Ni60-WC coatings were carried out by SEM, XRD, Vickers-microhardness meter, wear tester and electrochemical workstation. The microstructure, phases, hardness, wear and corrosion resistance were investigated. The results show that from the top to bottom, the microstructures were columnar dendrites, dendritic crystals and grains, respectively. The wear rate of the Ni60-WC coating was only 4.9 × 10−5 mm3·N−1·m−1, which was only 1.14% of copper substrate. In addition, the corrosion current density was 2.34 × 10−7 mA·mm−2, which was much lower than that of copper alloy substrate (1.14 × 10−6 mA·mm−2). The experimental results show that this Ni60-WC coating has a good metallurgical bonding and hardness, and it also has good wear and corrosion resistance, which is helpful to improve the service life of the condenser tube.

show abstract

Effect of Si content on microstructure and tribological properties of Ti5Si3/TiC reinforced NiTi laser cladding coatings

Cited by 23 publications

References 34 publications

Synthesizing Ti–Ni Alloy Composite Coating on Ti–6Al–4V Surface from Laser Surface Modification

Synthesizing Ti–Ni Alloy Composite Coating on Ti–6Al–4V Surface from Laser Surface Modification

Microstructure and Wear Resistance of Si-TC4 Composite Coatings by High-Speed Wire-Powder Laser Cladding

Research on Wear and Corrosion Resistance of Ni60-WC Coating Fabricated by Laser on the Preheated Copper Alloy

Contact Info

Product

Resources

About