Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering
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...
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2018
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| الوصول للمادة أونلاين: | https://hdl.handle.net/10356/89151 http://hdl.handle.net/10220/47017 |
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sg-ntu-dr.10356-891512023-07-14T15:52:15Z Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering Khor, Khiam Aik Li, Ruitao Wang, Zhiyong Li, Zhong Dong, Zhili School of Materials Science & Engineering School of Mechanical and Aerospace Engineering DRNTU::Engineering::Materials Spark Plasma Sintering Quasicrystals 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. MOE (Min. of Education, S’pore) Published version 2018-12-17T08:32:09Z 2019-12-06T17:19:01Z 2018-12-17T08:32:09Z 2019-12-06T17:19:01Z 2018 Journal Article 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 2073-4352 https://hdl.handle.net/10356/89151 http://hdl.handle.net/10220/47017 10.3390/cryst8100385 en Crystals © 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 (http://creativecommons.org/licenses/by/4.0/). 10 p. application/pdf |
| institution |
Nanyang Technological University |
| building |
NTU Library |
| continent |
Asia |
| country |
Singapore Singapore |
| content_provider |
NTU Library |
| collection |
DR-NTU |
| language |
English |
| topic |
DRNTU::Engineering::Materials Spark Plasma Sintering Quasicrystals |
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DRNTU::Engineering::Materials Spark Plasma Sintering Quasicrystals Khor, Khiam Aik Li, Ruitao Wang, Zhiyong Li, Zhong Dong, Zhili Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| description |
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. |
| author2 |
School of Materials Science & Engineering |
| author_facet |
School of Materials Science & Engineering Khor, Khiam Aik Li, Ruitao Wang, Zhiyong Li, Zhong Dong, Zhili |
| format |
Article |
| author |
Khor, Khiam Aik Li, Ruitao Wang, Zhiyong Li, Zhong Dong, Zhili |
| author_sort |
Khor, Khiam Aik |
| title |
Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| title_short |
Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| title_full |
Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| title_fullStr |
Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| title_full_unstemmed |
Dynamic fracture mechanism of quasicrystal-containing Al–Cr–Fe consolidated using spark plasma sintering |
| title_sort |
dynamic fracture mechanism of quasicrystal-containing al–cr–fe consolidated using spark plasma sintering |
| publishDate |
2018 |
| url |
https://hdl.handle.net/10356/89151 http://hdl.handle.net/10220/47017 |
| _version_ |
1772826739010961408 |