|
|
|
|
LEADER |
01948 am a22002293u 4500 |
001 |
69652 |
042 |
|
|
|a dc
|
100 |
1 |
0 |
|a Ruan, Shiyun
|e author
|
100 |
1 |
0 |
|a Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
|e contributor
|
100 |
1 |
0 |
|a Massachusetts Institute of Technology. Department of Materials Science and Engineering
|e contributor
|
100 |
1 |
0 |
|a Schuh, Christopher A.
|e contributor
|
100 |
1 |
0 |
|a Ruan, Shiyun
|e contributor
|
100 |
1 |
0 |
|a Schuh, Christopher A.
|e contributor
|
700 |
1 |
0 |
|a Schuh, Christopher A
|e author
|
245 |
0 |
0 |
|a Electrodeposited Al-Mn Alloys with Microcrystalline, Nanocrystalline, Amorphous and Nano-quasicrystalline Structures
|
260 |
|
|
|b Elsevier B.V.,
|c 2012-03-14T15:42:19Z.
|
856 |
|
|
|z Get fulltext
|u http://hdl.handle.net/1721.1/69652
|
520 |
|
|
|a Al-Mn alloys with Mn content ranging from 0 to 15.8 at.% are prepared by electrodeposition from an ionic liquid at room temperature, and exhibit a remarkably broad range of structures. The alloys are characterized through a combination of techniques, including X-ray diffraction, electron microscopy and calorimetry. For alloys with Mn content up to 7.5 at.%, increasing Mn additions lead to a decrease in grain size of single-phase microcrystalline face-centered cubic (fcc) Al(Mn). Between 8.2 and 12.3 at.% Mn, an amorphous phase appears, accompanied by a dramatic reduction in the size of the coexisting fcc crystallites to the ∼2-50 nm level. At higher Mn contents, the structure nominally appears entirely amorphous, but is shown to contain order in the form of pre-existing nuclei of the icosahedral quasicrystalline phase. Additionally, nanoindentation tests reveal that the nanostructured and amorphous specimens have very high hardnesses that exhibit complex trends with Mn content.
|
520 |
|
|
|a Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
|
546 |
|
|
|a en_US
|
655 |
7 |
|
|a Article
|
773 |
|
|
|t Acta Materialia
|