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Integrated Ferroelectrics
An International Journal
Volume 228, 2022 - Issue 1
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Research Article

Microstructure Evolution during Creep of Al2O3f/Mg-6Al-0.5Nd-1Gd Composites

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Pages 220-229 | Received 03 Sep 2021, Accepted 20 Feb 2022, Published online: 21 Jul 2022
 

Abstract

The microstructure evolution and creep fracture mechanism of Al2O3f/Mg-6Al-0.5Nd-1Gd at different creep stages have been investigated by high temperature creep apparatus, X-ray diffraction analysis, and scanning electron microscopy. The results show that the composite is composed of α-Mg, β-Mg17Al12, Al2O3, Mg2Si, Al2Nd, and Al2Gd. MgO was generated on the fiber surface as a transition layer. According to the creep test results, the composites are suitable for working conditions below 110 MPa at 200 °C. The creep fracture mode of the composites depends on the interfacial bonding conditions between the matrix alloy and fiber, and the fracture mechanism is a combination of interfacial debonding and fiber fracture.

Additional information

Funding

Funding was provided by Natural Science Basic Research Plan in Shaanxi Province of China (Program No. 2022JM-236).

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