Mechanical Aspects of Deformation-Induced Surface Roughening in the Presence of Inclusions in a Subsurface Layer. Numerical Modeling

Романова, В. А.; Dymnich, E.; Балохонов, Р. Р.; Zinovieva, O.

doi:10.3389/fmech.2020.00066

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…It is still debatable, however, whether the first reaction sequence occurred upon the formation of the Ti-Al system or the Ti-Ni system. Further studies might be required to explore other factors affecting the coating performance, such as the presence of pores and inclusions (Romanova et al, 2020), surface tribology (Ciulli, 2019), corrosion resistance (Darmawan et al, 2022), and the quality of the adhesion (Anggono, 2020). The coating is expected to be used in many applications with higher loads, such as spur gear (Muhammad and Haruna Shanono, 2021) and ballistic panels (Mohd Yuhazri Yaakob et al, 2020).…”

Section: Frontiers In Mechanical Engineeringmentioning

confidence: 99%

Interfacial formation of intermetallic Ni-Al-Ti systems formed by induction heating

Riyadi

Siswanto²,

Zhu³

2022

Front. Mech. Eng.

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Intermetallic systems of Nickel (Ni), Aluminium (Al), and Titanium (Ti) are candidates for lightweight materials that offer high-temperature resistance. Combustion synthesis has been widely studied to produce intermetallic and coating deposition by exploiting the heat released by the combustion. An underlayer is often used to enhance the adhesion of the coating to the substrate. The interaction of the coating and the underlayer during heating is, therefore, crucial for achieving a good adhesion quality. This work aimed to investigate the microstructure and properties of the interfacial formation across the NiAl coatings and Ti underlayers formed by combustion synthesis. Induction heating was used to initiate the heating and reaction process with heating rates of 46.6, 57.0, and 85.5 K/s. The microstructure was characterized by Scanning Electron Microscopy (SEM) equipped with an Energy Dispersive Spectroscopy (EDS) detector, whereas the formed phases were identified using X-ray Diffraction (XRD) tests. The hardness distribution was measured by the Vickers microhardness test. The result shows that NiAl with Al-rich and Ni-rich were formed in the coating region. The average thickness of the coating increases by approximately 200, 300, and 400 µm with a heating rate of 46.6, 57.0, and 85.5 K/s, respectively. The different thicknesses of the coating can be attributed to the migration of Ni/Al from the coating to the underlayer zones. The microstructure observed in the underlayer confirms the formation of several intermetallic phases of Ni-Ti and Ti-Al systems. The infiltration of Ni and Al elements from Ni and Al to Ti sides was responsible for generating a reaction between Ni-Ai-Ti. The formation of Ti2Ni–Ti3Al phases in the underlayer increases with the heating rate. The hardness across the coating, interface, and underlayer increases with the heating rates. The heating rate of 46.6, 57.0, and 85.5 K/s results in the hardness of the interface by 669.1, 804.8, and 967.7 HV, whereas the underlayer increases by 680.1, 772.7, and 978.7 HV, respectively. The increased content of the Ni-Al-Ti system, which are AlNi2Ti and Ti2Ni–Ti3Al phases, was attributed to the increased hardness of the interface and underlayer. This work improves the understanding of second reactions across the interface while fabricating coatings that apply an underlayer.

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Section: Frontiers In Mechanical Engineeringmentioning

confidence: 99%

Interfacial formation of intermetallic Ni-Al-Ti systems formed by induction heating

Riyadi

Siswanto²,

Zhu³

2022

Front. Mech. Eng.

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Surface Roughening Behavior of the 6063-T4 Aluminum Alloy during Quasi-in Situ Uniaxial Stretching

Cai

Wang

2022

Materials

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Owing to orange-peel defects, the industrial application of light alloy structural members is significantly restricted. In this study, a quasi-in situ axial tensile experiment was conducted on a 6063-T4 aluminum alloy sample. The surface morphology and microstructure evolution of the tagged area were scanned simultaneously using laser scanning confocal microscopy and electron backscattered diffraction, and the surface roughening behavior of the polycrystal aluminum alloy surface, caused by deformation, was quantitatively analyzed. As the concave–convex features at the surface appear in pairs with increasing global strain, the width of the concave features increases, whereas that of the convex features decreases gradually, resulting in the initially increasing surface roughness, which subsequently remains unchanged. During the stretching process, the small-sized grains in the 37~102 μm range show weak strain localization and the highest coordination of deformation. The deformation mode of medium-sized grains in the 114–270 μm range tends to grain deflection, and others tend to slip.

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Mechanical Aspects of Deformation-Induced Surface Roughening in the Presence of Inclusions in a Subsurface Layer. Numerical Modeling

Cited by 2 publications

References 20 publications

Interfacial formation of intermetallic Ni-Al-Ti systems formed by induction heating

Interfacial formation of intermetallic Ni-Al-Ti systems formed by induction heating

Surface Roughening Behavior of the 6063-T4 Aluminum Alloy during Quasi-in Situ Uniaxial Stretching

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