A Novel Developed Grain Refiner (Al–Y–B Master Alloys) Using Yttrium and KBF4 Powders

Xu, Rongfu; Sun, Qingping; Wang, Zhigang; Xu, Yong; Ren, Wencheng

doi:10.3103/s1067821218010145

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Separation work and interfacial energy are introduced to analyze the stability of Ag/Ni interfacial bonding and the strength of interfacial bonding [24].…”

Section: Interface Bonding Stabilitymentioning

confidence: 99%

Simulation and experiments on the performance of Co and Mo doped AgNi contact materials

Wang

Jia

Cui

et al. 2022

Mater. Res. Express

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In response to the inadequacy of experimental methods to explore the effect of doping modification on the performance of AgNi contact materials, the Ag/Ni interface simulation model was established based on the first-principles density functional theory to study the interfacial stability and electronic structure of Ag/Ni with Co-doped and Mo-doped. The stability at the interface can directly affect the anti-melt welding performance of AgNi contact materials. The doping can enhance the interfacial bonding stability of Ag/Ni, the hybridization of Ag and Ni orbitals and the bonding strength of Ag-Ni metal bonds, among which the Mo-doped Ag/Ni has the best stability. The contact materials were prepared by powder metallurgy method. Wettability test and electrical contact performance test were conducted on AgNi contacts before and after doping. It was found that Co and Mo doping improved the anti-melt welding performance and anti-arc erosion performance of the intrinsic contact materials, which verified the simulation conclusions. The doping of Mo in AgNi contacts resulted in a substantial reduction of melt welding force and a significant reduction of material loss, which had the most obvious improvement effect on the contact materials.

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“…Separation work and interfacial energy are introduced to analyze the stability of Ag/Ni interfacial bonding and the strength of interfacial bonding [24].…”

Section: Interface Bonding Stabilitymentioning

confidence: 99%

Simulation and experiments on the performance of Co and Mo doped AgNi contact materials

Wang

Jia

Cui

et al. 2022

Mater. Res. Express

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“…The yttrium-modified Al-alloys were less investigated than Sc-and Zr-modified alloys. Yttrium strongly reduces grain sizes in Al-Si alloys during solidification [30]; thus, an Al-Y-B grain refiner was developed [31]. It also modifies the eutectic silicon and iron-rich phases in Al-Si-Cu and Al-Si piston alloys [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Dispersoids in Al-Mg-Si Alloy AA 6086 Modified by Sc and Y

et al. 2023

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The aluminium alloy AA 6086 attains the highest room temperature strength among Al-Mg-Si alloys. This work studies the effect of Sc and Y on the formation of dispersoids in this alloy, especially L12-type ones, which can increase its high-temperature strength. A comprehensive investigation was carried out using light microscopy (LM), scanning (SEM), and transmission (TEM) electron microscopy, energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and dilatometry to obtain the information regarding the mechanisms and kinetics of dispersoid formation, particularly during isothermal treatments. Sc and Y caused the formation of L12 dispersoids during heating to homogenization temperature and homogenization of the alloys, and during isothermal heat treatments of the as-cast alloys (T5 temper). The highest hardness of Sc and (Sc + Y) modified alloys was attained by heat-treating alloys in the as-cast state in the temperature range between 350 °C and 450 °C (via T5 temper).

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Effect of Bi addition on microstructure and mechanical properties of hypereutectic Al-17.6Si alloy

Biswas

Prasadu

Mondal

2019

Mater. Res. Express

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A Novel Developed Grain Refiner (Al–Y–B Master Alloys) Using Yttrium and KBF4 Powders

Cited by 3 publications

References 25 publications

Simulation and experiments on the performance of Co and Mo doped AgNi contact materials

Simulation and experiments on the performance of Co and Mo doped AgNi contact materials

Dispersoids in Al-Mg-Si Alloy AA 6086 Modified by Sc and Y

Effect of Bi addition on microstructure and mechanical properties of hypereutectic Al-17.6Si alloy

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