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Influence of yttrium on microstructure and mechanical properties of as-cast Mg–5Li–3Al–2Zn alloy
- Source :
-
Journal of Alloys & Compounds . Sep2011, Vol. 509 Issue 37, p9045-9049. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: The influence of Y on microstructure and mechanical properties of as-cast Mg–5Li–3Al–2Zn alloy was investigated. The results show that the phase compositions of Mg–5Li–3Al–2Zn consist of α-Mg and AlLi phases. Adding Y to the alloy results in the formation of Al2Y compound and facilitates grain refinement. The addition of 0.8wt.% Y produces the smallest grain size. The tensile tests performed at room temperature show that the additions of Y can improve the mechanical properties of the alloy; the tensile strength and ductility reach peak values when the Y additions are 0.8wt.% and 1.2wt.%, respectively. The mechanisms of improvement are related to grain refinement and compound strengthening effects. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 509
- Issue :
- 37
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 64850774
- Full Text :
- https://doi.org/10.1016/j.jallcom.2011.04.030