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Title: Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering
Authors: Khor, Khiam Aik
Li, Ruitao
Wang, Zhiyong
Li, Zhong
Dong, Zhili
Keywords: DRNTU::Engineering::Materials
Spark Plasma Sintering
Issue Date: 2018
Source: Li, R., Wang, Z., Li, Z., Khor, K. A., & Dong, Z. (2018). Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering. Crystals, 8(10), 385-. doi: 10.3390/cryst8100385
Series/Report no.: Crystals
Abstract: The potential applications of quasicrystals (QCs) in automotive and aerospace industries requires the investigation of their fracture and failure mechanisms under dynamic loading conditions. In this study, Al–Cr–Fe powders were consolidated into pellets using spark plasma sintering at 800 °C for 30 min. The microhardness and dynamic failure properties of the samples were determined using nanoindentation and split-Hopkinson pressure bar technique, respectively. Scanning electron microscopy and transmission electron microscopy were employed to analyze fracture particles. The dynamic failure strength obtained from the tests is 653 ± 40 MPa. The dynamic failure process is dominated by transgranular fracture mechanisms. The difficulty in the metadislocation motion in the dynamic loading leads to the high brittleness of the spark plasma sintered (SPSed) Al–Cr–Fe materials.
ISSN: 2073-4352
DOI: 10.3390/cryst8100385
Rights: © 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles


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