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The influence of la...
The influence of la and ce on microstructure and mechanical properties of an al-si-cu-mg-fe alloy at high temperature
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- Du, A. (författare)
- China Acad Machinery Sci & Technol Jiangle, Inst Semisolid Met Technol, Sanming 353300, Peoples R China
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- Jarfors, Anders E.W. 1963- (författare)
- Jönköping University,JTH, Material och tillverkning
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- Zheng, J. (författare)
- China Acad Machinery Sci & Technol Jiangle, Inst Semisolid Met Technol, Sanming 353300, Peoples R China
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- Wang, K. (författare)
- Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
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- Yu, G. (författare)
- China Acad Machinery Sci & Technol Jiangle, Inst Semisolid Met Technol, Sanming 353300, Peoples R China
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(creator_code:org_t)
- 2021-02-26
- 2021
- Engelska.
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Ingår i: Metals. - : MDPI. - 2075-4701. ; 11:3
- Relaterad länk:
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https://doi.org/10.3...
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https://www.mdpi.com...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- The effect of lanthanum (La)+cerium (Ce) addition on the high-temperature strength of an aluminum (Al)–silicon (Si)–copper (Cu)–magnesium (Mg)–iron (Fe)–manganese (Mn) alloy was investigated. A great number of plate-like intermetallics, Al11 (Ce, La)3-and blocky α-Al15 (Fe, Mn)3Si2-precipitates, were observed. The results showed that the high-temperature mechanical properties depended strongly on the amount and morphology of the intermetallic phases formed. The precipitated tiny Al11 (Ce, La)3 and α-Al15 (Fe, Mn)3Si2 both contributed to the high-temperature mechanical properties, especially at 300◦C and 400◦C. The formation of coarse plate-like Al11 (Ce, La)3, at the highest (Ce-La) additions, reduced the mechanical properties at (≤300) °C and improved the properties at 400 °C. Analysis of the strengthening mechanisms revealed that the load-bearing mechanism was the main contributing mechanism with no contribution from thermal-expansion mismatch effects. Strain hardening had a minor contribution to the tensile strength at high-temperature.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- Al11La3/Al11Ce3
- Ce+La
- High-temperature strength
- Modeling particle contribution
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- ref (ämneskategori)
- art (ämneskategori)
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