Unexpected high-temperature brittleness of a Mg-Gd-Y-Ag alloy
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
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Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 2510-2515 |
| Journal / Publication | Journal of Magnesium and Alloys |
| Volume | 10 |
| Issue number | 9 |
| Online published | 29 Jul 2021 |
| Publication status | Published - Sept 2022 |
Link(s)
| DOI | DOI |
|---|---|
| Attachment(s) | Documents
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| Document Link | |
| Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85111526808&origin=recordpage |
| Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(b0d68b14-79cf-4436-b870-a1ae974cfb22).html |
Abstract
Rare earth (RE) can produce excellent precipitation hardening in Mg alloys. However, when forming a solid solution, it also deteriorates formability, a problem that can usually be overcome by raising deformation temperature. Here we report an unexpected observation of high temperature brittleness in a Mg-Gd-Y-Ag alloy. As the temperature reached 500 °C, the formability decreased drastically, leading to severe intergranular fracture under only 0.5% strain. This was caused by failure of grain boundaries, which are weakened by segregated interfacial compounds.
Research Area(s)
- Formability, Grain boundary sliding, High temperature brittleness, Interfacial compounds
Citation Format(s)
Unexpected high-temperature brittleness of a Mg-Gd-Y-Ag alloy. / Xiao, Lirong; Chen, Xuefei; Ning, Huiyan et al.
In: Journal of Magnesium and Alloys, Vol. 10, No. 9, 09.2022, p. 2510-2515.
In: Journal of Magnesium and Alloys, Vol. 10, No. 9, 09.2022, p. 2510-2515.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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