Fabrication of nanocrystalline ZrO2 particle reinforced aluminum alloy composite by squeeze casting route

Abstract The paper presents results of compressive strength investigations of EN AC-44200 based aluminum alloy composite materials reinforced with aluminum oxide particles at ambient and at temperatures of 100, 200 and 250°C. They were manufactured by squeeze casting of the porous preforms made of α-Al2O3 particles with liquid aluminum alloy EN AC-44200. The composite materials were reinforced with preforms characterized by the porosities of 90, 80, 70 and 60 vol. %, thus the alumina content in the composite materials was 10, 20, 30 and 40 vol.%. The results of the compressive strength of manufactured materials were presented and basing on the microscopic observations the effect of the volume content of strengthening alumina particles on the cracking mechanisms during compression at indicated temperatures were shown and discussed. The highest compressive strength of 470 MPa at ambient temperature showed composite materials strengthened with 40 vol.% of α-Al2O3 particles.

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Enhanced mechanical properties of 6082 aluminum alloy via SiC addition combined with squeeze casting

Journal of Material Science and Technology ◽

10.1016/j.jmst.2021.01.077 ◽

2021 ◽

Author(s):

Wenming Jiang ◽

Junwen Zhu ◽

Guangyu Li ◽

Feng Guan ◽

Yang Yu ◽

...

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Squeeze Casting ◽

6082 Aluminum Alloy

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Microstructure, microhardness and tribological behavior of Al2O3 reinforced A380 aluminum alloy composite coatings prepared by cold spray technique

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2018.07.039 ◽

2018 ◽

Vol 350 ◽

pp. 391-400 ◽

Cited By ~ 18

Author(s):

Xiang Qiu ◽

Naeem ul Haq Tariq ◽

Ji-qiang Wang ◽

Jun-rong Tang ◽

Lawrence Gyansah ◽

...

Keyword(s):

Aluminum Alloy ◽

Cold Spray ◽

Tribological Behavior ◽

Composite Coatings ◽

Alloy Composite ◽

Spray Technique

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Inoculation and Fading of Sr-Modified A356.2 Aluminum Alloy in Squeeze Casting

Materials Science Forum ◽

10.4028/www.scientific.net/msf.850.671 ◽

2016 ◽

Vol 850 ◽

pp. 671-678

Author(s):

Jian Wei Niu ◽

Lie Jun Li ◽

Hai Jun Liu ◽

Ji Xiang Gao ◽

Chuan Dong Ren

Keyword(s):

Mechanical Properties ◽

Mechanical Property ◽

Aluminum Alloy ◽

Hydrogen Absorption ◽

Deleterious Effect ◽

Squeeze Casting ◽

Eutectic Silicon ◽

Direct Reading ◽

Air Bag ◽

Fading Rate

The inoculation and fading behavior of Sr-modified aluminum alloy A356. 2 were studied for air bag bracket produced by squeeze casting. The effects of Sr, P, B contents and casting temperature on the microstructure and eutectic silicon morphology in different periods of inoculation were investigated by SEM and direct-reading Spectrometer. The influence of inoculation fading rate and addition of Sr on the casting mechanical properties and hydrogen absorption was studied. The experimental results showed that the inoculation process was completed in 1 h, and the eutectic silicon morphology can be maintained in almost subsequent 40 h after the addition of Sr. The fading rate decreased appreciably with the increase of casing temperature, P and B contents. The deleterious effect of the inoculation fading of Sr on the casting mechanical property can be compensated by the squeeze casting.

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