Abstract
Using up-to-date methods of material studies, it is revealed that the structure of as cast Al-Si alloy (silumin) is multi-phased and morphologically heterogeneous. It consists of solid solution grains and eutectic Al-Si with a diverse morphology. With the help of selective etching intermetallic compounds (AlNiCu and AlMg) are detected on the grain boundaries of α-solid solution. Treatment of silumin samples by the intense pulsed electron beam with the diverse density results in release of the second phase sub-micro and nano-dimensional particles. According to experiments optimal energy densities of the electron beam are 25, 30 and 35 J/sm2. Silumin irradiation results in a manyfold advance of mechanical and tribological properties of the surface layers. As found out, these characteristics of the surface layers change significantly due to the sub-micro and nano-dimensional structure of cellular crystallization formed by the electron beam, which is free of primary inclusions consisting of silicon and intermetallic compounds.
| Original language | English |
|---|---|
| Pages (from-to) | 377-380 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 229 |
| DOIs | |
| Publication status | Published - 15 Oct 2018 |
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Keywords
- Electron microscopy
- Metals and alloys
- Multilayer structure
- Pulsed electron beam
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Structure and properties changes of Al-Si alloy treated by pulsed electron beam. / Zagulyaev, Dmitry; Konovalov, Sergey; Gromov, Victor; Glezer, Alexander; Ivanov, Yurii; Sundeev, Roman.
In: Materials Letters, Vol. 229, 15.10.2018, p. 377-380.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structure and properties changes of Al-Si alloy treated by pulsed electron beam
AU - Zagulyaev, Dmitry
AU - Konovalov, Sergey
AU - Gromov, Victor
AU - Glezer, Alexander
AU - Ivanov, Yurii
AU - Sundeev, Roman
PY - 2018/10/15
Y1 - 2018/10/15
N2 - Using up-to-date methods of material studies, it is revealed that the structure of as cast Al-Si alloy (silumin) is multi-phased and morphologically heterogeneous. It consists of solid solution grains and eutectic Al-Si with a diverse morphology. With the help of selective etching intermetallic compounds (AlNiCu and AlMg) are detected on the grain boundaries of α-solid solution. Treatment of silumin samples by the intense pulsed electron beam with the diverse density results in release of the second phase sub-micro and nano-dimensional particles. According to experiments optimal energy densities of the electron beam are 25, 30 and 35 J/sm2. Silumin irradiation results in a manyfold advance of mechanical and tribological properties of the surface layers. As found out, these characteristics of the surface layers change significantly due to the sub-micro and nano-dimensional structure of cellular crystallization formed by the electron beam, which is free of primary inclusions consisting of silicon and intermetallic compounds.
AB - Using up-to-date methods of material studies, it is revealed that the structure of as cast Al-Si alloy (silumin) is multi-phased and morphologically heterogeneous. It consists of solid solution grains and eutectic Al-Si with a diverse morphology. With the help of selective etching intermetallic compounds (AlNiCu and AlMg) are detected on the grain boundaries of α-solid solution. Treatment of silumin samples by the intense pulsed electron beam with the diverse density results in release of the second phase sub-micro and nano-dimensional particles. According to experiments optimal energy densities of the electron beam are 25, 30 and 35 J/sm2. Silumin irradiation results in a manyfold advance of mechanical and tribological properties of the surface layers. As found out, these characteristics of the surface layers change significantly due to the sub-micro and nano-dimensional structure of cellular crystallization formed by the electron beam, which is free of primary inclusions consisting of silicon and intermetallic compounds.
KW - Electron microscopy
KW - Metals and alloys
KW - Multilayer structure
KW - Pulsed electron beam
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U2 - 10.1016/j.matlet.2018.07.064
DO - 10.1016/j.matlet.2018.07.064
M3 - Article
VL - 229
SP - 377
EP - 380
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -