Microstructure and mechanical properties of in-situ TiB2/AlSi7Mg composite via powder metallurgy and hot extrusion

Chen, Cunguang; Sun, Chunfang; Wang, Wenwen; Qi, Ming; Han, Weihao; Li, Yang; Liu, Xinhua; Yang, Fang; Guo, Leichen; Guo, Zhimeng

doi:10.1016/j.jmrt.2022.05.117

Cited by 10 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Commercially pure aluminum (CPAl, 99.7%) was added to the medium frequency induction melting furnace, heated to 850°C and kept warm until the pure aluminum was fully melted after that K2TiF6 and KBF4 with the specified Ti/2B atomic ratio were mixed evenly, and added to the melting furnace. The exothermic interactions between molten Al and combined K2TiF6 and KBF4 are the basis for this technique [21][22][23][24][25][26][27]:…”

Section: Methodsmentioning

confidence: 99%

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

Shareef,

Liu,

Zhao

et al. 2024

KEM

View full text Add to dashboard Cite

The demand for structural lightweight in a variety of industries, particularly the automobile industry, has driven the development of heat-free die-cast aluminum alloys with excellent properties. Utilizing lightweight materials, such as Al-Si alloys has several benefits, including higher overall performance in automobiles and other industries, increased heat resistance efficiency, decreased emissions, and reduced weight. The purpose of this study is to modify the microstructure and enhance the mechanical properties of high-pressure die-casting (HPDC) AlSi10MnMg foundry alloy by incorporation of TiB2 and Sc without any heat treatment. The results showed that the HPDC process significantly refines the grain structure and AlSiMnFe intermetallic compounds, transforming the eutectic morphology from sharp to rounded, and 93% enhancement in elongation at the optimum content (0.018 wt.%) of TiB2. While the hardness of the alloy was improved by 15.7% with the addition of 0.03wt.% TiB2. TiB2 incorporation refines the grain structure and AlSiMnFe phases, while depressing externally solidified crystals (ESCs). The HPDC process refines Al3Sc phases as well as AlSiMnFe phases while increasing yield strength due to Al3Sc strengthening effects. After 0.5wt.% Sc addition in 0.018wt.% TiB2-AlSi10MnMg alloy, the YS, and EL reached the maximum of 196MPa and 9.93% respectively.

show abstract

Section: Methodsmentioning

confidence: 99%

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

Shareef,

Liu,

Zhao

et al. 2024

KEM

View full text Add to dashboard Cite

show abstract

“…The powder metallurgy route can manufacture nanostructured composites using High-Energy Ball Milling (HEBM) technique. The process has a significant advantage in grain and particle reinforcement because it utilizes high-frequency impacts causing severe plastic deformation, cold welding of the particles, and repeated fracturing 9 . HEBM introduces shear bands that contain a high-density network of dislocations and other crystallite defects that reduces crystallite and particle size and promotes changes in morphology before reaching the equilibrium state [10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of AA7075 Aluminum Alloy Composites Reinforced by Nanosized Particles of SiC, TiN, and ZnO by High-Energy Ball Milling and Hot Extrusion

Lira,

Barbosa,

Pina

et al. 2023

Mat. Res.

View full text Add to dashboard Cite

In this work, composite powders of aluminum alloy 7075 (AA7075) reinforced by 2 weight percent of nanosized particles of silicon carbide (SiC), titanium nitride (TiN), and zinc oxide (ZnO) were produced in a bath of isopropyl alcohol by high energy ball milling during 480 min at 25 ºC, 900 rpm, and Balls-to-Powder Weight Ratio (BPR) of 20:1. The techniques of X-Ray Diffraction (XRD), Laser Diffraction Method (LDM), Scanning Electron Microscopy (SEM), and microanalysis of Energy Dispersive Spectroscopy (EDS) were used to characterize the powders as received and processed. Then, the composites were hot extruded and characterized by XRD, SEM, and microhardness Vickers (HV). The milling process reduces the crystallite and particle size to around 30 nm and 10 µm, respectively. After extrusion, a fine microstructure and good consolidation were found for all bars, except for AA7075 as received. The ranging microhardness values were from 97 HV to 121 HV.

show abstract

Experimental Investigation of Al6063 Alloy with Zirconium Silicate Composite

Vijaya Kumar,

Venugopal,

Christiyan

et al. 2024

J. Inst. Eng. India Ser. D

View full text Add to dashboard Cite

Microstructure and mechanical properties of in-situ TiB2/AlSi7Mg composite via powder metallurgy and hot extrusion

Cited by 10 publications

References 47 publications

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

Manufacturing of AA7075 Aluminum Alloy Composites Reinforced by Nanosized Particles of SiC, TiN, and ZnO by High-Energy Ball Milling and Hot Extrusion

Experimental Investigation of Al6063 Alloy with Zirconium Silicate Composite

Contact Info

Product

Resources

About