Microstructure properties of rapidly solidified Al-Cu-Zn alloys

2010 ◽  
Vol 98 (3) ◽  
pp. 219-226 ◽  
Author(s):  
H. Bedboudi ◽  
M. Draissia ◽  
A. Bourbia ◽  
S. Boulekhssaim ◽  
M.Y. Debili
Keyword(s):  
Rapidly Solidified ◽  
Zn Alloys

scholarly journals Microstructure and properties of rapidly solidified Mg-5%Ca-Al-Zn alloys

2005 ◽  
Vol 55 (3) ◽  
pp. 137-141 ◽  
Author(s):  
Yuichi ASANO ◽  
Junichi KANEKO ◽  
Makoto SUGAMATA ◽  
Masahiro KUBOTA
Keyword(s):  
Microstructure And Properties ◽  
Rapidly Solidified ◽  
Zn Alloys

Analysis of the Solid Solution Microstructure of (HF) Al-Zn Alloys

2010 ◽  
Vol 303-304 ◽  
pp. 39-53 ◽  
Author(s):  
H. Bedboudi ◽  
A. Bourbia ◽  
M. Draissia ◽  
S. Boulkhessaim ◽  
M.Y. Debili
Keyword(s):  
High Frequency ◽  
Vickers Microhardness ◽  
Induction Melting ◽  
Strengthening Mechanisms ◽  
X Ray Diffraction ◽  
Microstructural Characteristics ◽  
X Ray ◽  
Microhardness Testing ◽  
Rapidly Solidified ◽  
Zn Alloys

Rapidly solidified Al-Zn alloys with Zn contents ranging up to 50 wt.% were made under vacuum, by high-frequency (HF) induction melting, from compacted mixture targets of Al and Zn of fine (99.99 % purity) elemental powders. The microstructural characteristics and strengthening mechanisms were investigated. The crystallographic microstructures were characterized by means of X-ray diffraction (XRD) analyses and optical microscopy observations as well as Vickers microhardness testing. Detailed overviews of alloying solubility of zinc in aluminium were given. Extensive solid solutions of CFC Al were found in the (HF) Al-Zn alloys, and a higher Vickers microhardnesses compared to that of pure (HF) aluminium.

scholarly journals Structure and mechanical properties of rapidly solidified Mg-Al-Zn alloys.

1998 ◽  
Vol 48 (8) ◽  
pp. 375-379 ◽  
Author(s):  
Nobuhiko HISATA ◽  
Makoto SUGAMATA ◽  
Junichi KANEKO
Keyword(s):  
Mechanical Properties ◽  
Rapidly Solidified ◽  
Zn Alloys

Amorphous and quasi-crystalline phases in rapidly solidified MgAlZn alloys

1994 ◽  
Vol 181-182 ◽  
pp. 1387-1391 ◽  
Author(s):  
Akio Niikura ◽  
An-Pang Tsai ◽  
Nobuyuki Nishiyama ◽  
Akihisa Inoue ◽  
Tsuyoshi Masumoto
Keyword(s):  
Crystalline Phases ◽  
Rapidly Solidified ◽  
Zn Alloys

Microstructure and strength of rapidly solidified and extruded Mg-Zn alloys

2000 ◽  
Vol 43 (5) ◽  
pp. 385-389 ◽  
Author(s):  
D.Y Maeng ◽  
T.S Kim ◽  
J.H Lee ◽  
S.J Hong ◽  
S.K Seo ◽  
...  
Keyword(s):  
Rapidly Solidified ◽  
Zn Alloys

Characterization of the Icosahedral Quasicrystal in the Rapidly Solidified Mg-Al-Zn Ternary Alloy

2011 ◽  
Vol 71-78 ◽  
pp. 822-825
Author(s):  
Man Zhu ◽  
Zeng Yun Jian ◽  
Cui Xia Liu ◽  
Gen Cang Yang ◽  
Yao He Zhou
Keyword(s):  
Ternary Alloy ◽  
Icosahedral Quasicrystal ◽  
Growth Morphology ◽  
Sem And Tem ◽  
Wide Range ◽  
Rapidly Solidified ◽  
Planar Growth ◽  
Zn Alloys

By means of XRD, SEM, FE-SEM, and TEM, the microstructures and growth morphology features of icosahedral quasicrystal for rapidly solidified Mg-Al-Zn system were investigated. It was found that, single icosahedral quasicrystal can be obtained in the Mg-Al-Zn alloys. The icosahedral quasicrystal reveals three typical morphologies: well developed dendrites, coral-like, and petal-like, and its compositions are in a wide range composition with 42.87-48.89 at.%Mg, 13.78-17.03 at.%Al, and 34.22-40.60 at.%Zn. Pentagonal dodecahedron with icosahedral symmetries is seen, and certain steps in pentagonal faces suggest that the planar growth occurs on the pentagonal faces.

Microsegregation of an Aluminum and Magnesium Alloy at High Solidification Rates

1981 ◽  
Vol 8 ◽  
Author(s):  
L.J. Masur ◽  
J.T. Burke ◽  
T.Z. Kattamis ◽  
M.C. Flemings
Keyword(s):  
Scanning Transmission Electron Microscopy ◽  
Coarse Grained ◽  
Specimen Preparation ◽  
Second Phase ◽  
Solute Redistribution ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Compositional Changes ◽  
Rapidly Solidified ◽  
Zn Alloys

ABSTRACTResults are presented of an on-going study of structure and solute redistribution in ribbon cast Al-Cu and Mg-Zn alloys. Regions found in these ribbons are (1) an apparently chemically homogeneous coarse-grained zone adjacent the chill, (2) a transition cellular region, and (3) a dendritic zone, usually equiaxed. In both alloys, structure in the equiaxed region becomes coarser with increasing distance from the chill. In Mg-Zn alloys, the amount of nonequilibrium second phase increases essentially linearly with distance in the cellular and dendritic regions. Scanning transmission electron microscopy can accurately measure solute distribution across rapidly solidified cells or dendrites, but the possibility of surface compositional changes during specimen preparation must be recognized.

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