Abstract
First-principles calculations of three Laves phase structures at Al2Ca and Al2Mg compositions predict the existence of Al2(Mg,Ca) Laves phase. To validate this prediction, a diffusion couple between Mg-30 wt.%Ca alloy and pure Al was assembled and heat-treated at 688 K for 2 weeks. From the cross section of the diffusion couple, backscatter electron microscopy coupled with electron probe microanalysis indicated the existence of Al2(Mg,Ca). Two Laves phases, i.e. C36-Al2(Mg,Ca) and C14-Al2(Mg,Ca), were identified by indexing the electron backscatter diffraction pattern with predicted lattice parameters by first-principles calculations and by diffraction analysis using transmission electron microscopy independently.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 573-576 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 55 |
| Issue number | 6 |
| DOIs | |
| State | Published - Sep 1 2006 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
Cite this
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Al2(Mg,Ca) phases in Mg-Al-Ca ternary system : First-principles prediction and experimental identification. / Zhong, Yu; Liu, Jing; Witt, Ron A.; Sohn, Yong ho; Liu, Zi Kui.
In: Scripta Materialia, Vol. 55, No. 6, 01.09.2006, p. 573-576.Research output: Contribution to journal › Article
TY - JOUR
T1 - Al2(Mg,Ca) phases in Mg-Al-Ca ternary system
T2 - First-principles prediction and experimental identification
AU - Zhong, Yu
AU - Liu, Jing
AU - Witt, Ron A.
AU - Sohn, Yong ho
AU - Liu, Zi Kui
PY - 2006/9/1
Y1 - 2006/9/1
N2 - First-principles calculations of three Laves phase structures at Al2Ca and Al2Mg compositions predict the existence of Al2(Mg,Ca) Laves phase. To validate this prediction, a diffusion couple between Mg-30 wt.%Ca alloy and pure Al was assembled and heat-treated at 688 K for 2 weeks. From the cross section of the diffusion couple, backscatter electron microscopy coupled with electron probe microanalysis indicated the existence of Al2(Mg,Ca). Two Laves phases, i.e. C36-Al2(Mg,Ca) and C14-Al2(Mg,Ca), were identified by indexing the electron backscatter diffraction pattern with predicted lattice parameters by first-principles calculations and by diffraction analysis using transmission electron microscopy independently.
AB - First-principles calculations of three Laves phase structures at Al2Ca and Al2Mg compositions predict the existence of Al2(Mg,Ca) Laves phase. To validate this prediction, a diffusion couple between Mg-30 wt.%Ca alloy and pure Al was assembled and heat-treated at 688 K for 2 weeks. From the cross section of the diffusion couple, backscatter electron microscopy coupled with electron probe microanalysis indicated the existence of Al2(Mg,Ca). Two Laves phases, i.e. C36-Al2(Mg,Ca) and C14-Al2(Mg,Ca), were identified by indexing the electron backscatter diffraction pattern with predicted lattice parameters by first-principles calculations and by diffraction analysis using transmission electron microscopy independently.
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U2 - 10.1016/j.scriptamat.2006.03.068
DO - 10.1016/j.scriptamat.2006.03.068
M3 - Article
AN - SCOPUS:33745684801
VL - 55
SP - 573
EP - 576
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
IS - 6
ER -