Abstract
The structure of the Al-20%Si hypereutectic alloy surface layer modified by compression plasma flows is investigated. Compression plasma flows are generated in a nitrogen atmosphere by a magnetoplasma compressor of compact geometry. Plasma impact leads to dissolution of intermetallides and primary Si crystals and to the formation of an oversaturated solid solution on the basis of the f.c.c. Al lattice containing Si atoms. The high cooling rate of the melt resulted in structure refinement of the surface layer. An additional modification of the surface layer is carried out by its alloying with Ti atoms under plasma impact. Structural changes provided an increase in the aluminum alloy microhardness. Main trends in structure transformation after plasma treatment are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 91-99 |
| Number of pages | 9 |
| Journal | High Temperature Material Processes |
| Volume | 17 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - 7 Aug 2013 |
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Keywords
- Al-Si alloy
- Compression plasma flow
- Intermetallides
- Phase composition
- Surface alloying
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)
- Materials Science(all)
- Energy Engineering and Power Technology
- Spectroscopy
- Physical and Theoretical Chemistry
Cite this
Modification of Al-20%Si hypereutectic alloy structure by compress ion plasm a flow treatment. / Cherenda, N. N.; Uglov, V. V.; Laskovnev, A. P.; Gusakova, S. V.; Astashynski, V. M.; Kuzmicki, A. M.
In: High Temperature Material Processes, Vol. 17, No. 2-3, 07.08.2013, p. 91-99.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modification of Al-20%Si hypereutectic alloy structure by compress ion plasm a flow treatment
AU - Cherenda, N. N.
AU - Uglov, V. V.
AU - Laskovnev, A. P.
AU - Gusakova, S. V.
AU - Astashynski, V. M.
AU - Kuzmicki, A. M.
PY - 2013/8/7
Y1 - 2013/8/7
N2 - The structure of the Al-20%Si hypereutectic alloy surface layer modified by compression plasma flows is investigated. Compression plasma flows are generated in a nitrogen atmosphere by a magnetoplasma compressor of compact geometry. Plasma impact leads to dissolution of intermetallides and primary Si crystals and to the formation of an oversaturated solid solution on the basis of the f.c.c. Al lattice containing Si atoms. The high cooling rate of the melt resulted in structure refinement of the surface layer. An additional modification of the surface layer is carried out by its alloying with Ti atoms under plasma impact. Structural changes provided an increase in the aluminum alloy microhardness. Main trends in structure transformation after plasma treatment are discussed.
AB - The structure of the Al-20%Si hypereutectic alloy surface layer modified by compression plasma flows is investigated. Compression plasma flows are generated in a nitrogen atmosphere by a magnetoplasma compressor of compact geometry. Plasma impact leads to dissolution of intermetallides and primary Si crystals and to the formation of an oversaturated solid solution on the basis of the f.c.c. Al lattice containing Si atoms. The high cooling rate of the melt resulted in structure refinement of the surface layer. An additional modification of the surface layer is carried out by its alloying with Ti atoms under plasma impact. Structural changes provided an increase in the aluminum alloy microhardness. Main trends in structure transformation after plasma treatment are discussed.
KW - Al-Si alloy
KW - Compression plasma flow
KW - Intermetallides
KW - Phase composition
KW - Surface alloying
UR - http://www.scopus.com/inward/record.url?scp=84938595650&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84938595650&partnerID=8YFLogxK
U2 - 10.1615/HighTempMatProc.2015013490
DO - 10.1615/HighTempMatProc.2015013490
M3 - Article
AN - SCOPUS:84938595650
VL - 17
SP - 91
EP - 99
JO - High Temperature Materials and Processes
JF - High Temperature Materials and Processes
SN - 1093-3611
IS - 2-3
ER -