Imperial College London
Portrait Picture

ProfessorChristopherGourlay

Faculty of Engineering, Department of Materials

Professor of Physical Metallurgy
 
 
 
//

Contact

 

+44 (0)20 7594 8707c.gourlay

 
 
//

Location

 

301DBessemer BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Deng:2022:10.1016/j.matchar.2022.111807,
author = {Deng, Y and Zeng, G and Xian, J and Zhan, H and Liu, C and Gourlay, CM},
doi = {10.1016/j.matchar.2022.111807},
journal = {Materials Characterization},
pages = {1--15},
title = {Eutectic intermetallic formation during solidification of a Mg-Sn-Al-Zn-Mn alloy},
url = {http://dx.doi.org/10.1016/j.matchar.2022.111807},
volume = {186},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Multiple primary and eutectic intermetallic compounds (IMCs) often form during the solidification of multicomponent magnesium alloys. Here, we comprehensively explore eutectic intermetallic formation in Mg-4Sn-3Al-1.5Zn-0.6Mn (wt%) as-cast alloy, in comparison with Mg-3Al-1Zn-0.3Mn, to better understand Mg2Sn formation during complex multiphase solidification and how it affects the formation of other IMCs. Various IMCs formed at different stages of solidification: τ-AlMn and Al8Mn5 early during solidification and Mg2Sn, β-Mg17Al12, and τ-MgAlZn as late forming eutectic phases. Most Mg2Sn phase shared a faceted interface with β-Mg17Al12 and τ-MgAlZn grains, forming a fully divorced eutectic particle containing multiple phases. EBSD-based trace analysis in combination with XCT and TEM results revealed that β-Mg17Al12 and τ-MgAlZn phase grew adjacent to the {100} growth facets of Mg2Sn. Within multi-phase particles, seven types of reproducible orientation relationships (ORs) were measured between each intermetallic. The ORs between Mg2Sn and τ-MgAlZn were found to have the best lattice match among the observed phase pairs. For the defined ORs, Mg2Sn can be correlated with the icosahedral coordination in τ-MgAlZn.
AU  - Deng,Y
AU  - Zeng,G
AU  - Xian,J
AU  - Zhan,H
AU  - Liu,C
AU  - Gourlay,CM
DO  - 10.1016/j.matchar.2022.111807
EP  - 15
PY  - 2022///
SN  - 1044-5803
SP  - 1
TI  - Eutectic intermetallic formation during solidification of a Mg-Sn-Al-Zn-Mn alloy
T2  - Materials Characterization
UR  - http://dx.doi.org/10.1016/j.matchar.2022.111807
UR  - https://www.sciencedirect.com/science/article/pii/S1044580322000894?via%3Dihub
UR  - http://hdl.handle.net/10044/1/95873
VL  - 186
ER  -
Download