Detail publikace
Influence of Silumine Casting Microstrukture on Component Failure Resistance
TVARŮŽEK, M. MACHKOVÁ, M. JANOVÁ, D.
Český název
Influence of Silumine Casting Microstrukture on Component Failure Resistance
Anglický název
Influence of Silumine Casting Microstrukture on Component Failure Resistance
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
The objective of this work is to define causes of reduced resistance to mechanical damage that had occurred for several types of castings. Macro- and micro-porosity, metallographis structure and presence and distribution of particular phases were investigated. Micro-analysis of phase composition was carried out. Based on the metallographic analysis, it is possible to assume that the structure of mechanically more resistant castings is more coarsely grained with larger alpha-phase aluminium surfaces and features ferrum only in the form of tiny angulate particles always accompanied by managanese. The structure of less resistant castings contains larger stellar-shaped particles of Al15(MnFe)3Si2 intermetallic phase, and more importantly, it has sharp, hard and brittle needles of Al5FeSi intermetalic phase, which dramatically deteriorate mechanical properties due to their notch effect.
Český abstrakt
The objective of this work is to define causes of reduced resistance to mechanical damage that had occurred for several types of castings. Macro- and micro-porosity, metallographis structure and presence and distribution of particular phases were investigated. Micro-analysis of phase composition was carried out. Based on the metallographic analysis, it is possible to assume that the structure of mechanically more resistant castings is more coarsely grained with larger alpha-phase aluminium surfaces and features ferrum only in the form of tiny angulate particles always accompanied by managanese. The structure of less resistant castings contains larger stellar-shaped particles of Al15(MnFe)3Si2 intermetallic phase, and more importantly, it has sharp, hard and brittle needles of Al5FeSi intermetalic phase, which dramatically deteriorate mechanical properties due to their notch effect.
Anglický abstrakt
The objective of this work is to define causes of reduced resistance to mechanical damage that had occurred for several types of castings. Macro- and micro-porosity, metallographis structure and presence and distribution of particular phases were investigated. Micro-analysis of phase composition was carried out. Based on the metallographic analysis, it is possible to assume that the structure of mechanically more resistant castings is more coarsely grained with larger alpha-phase aluminium surfaces and features ferrum only in the form of tiny angulate particles always accompanied by managanese. The structure of less resistant castings contains larger stellar-shaped particles of Al15(MnFe)3Si2 intermetallic phase, and more importantly, it has sharp, hard and brittle needles of Al5FeSi intermetalic phase, which dramatically deteriorate mechanical properties due to their notch effect.
Klíčová slova česky
silumine, casting, impacte resistance, fatigue, porosity, intermetallic phases
Klíčová slova anglicky
silumine, casting, impacte resistance, fatigue, porosity, intermetallic phases
Rok RIV
2009
Vydáno
01.12.2009
Místo
Česká Republika
ISSN
1211-877X
Časopis
Letecký zpravodaj
Ročník
2009
Číslo
2
Strany od–do
30–35
Počet stran
6
BIBTEX
@article{BUT48556,
author="Martin {Tvarůžek} and Miroslava {Machková} and Drahomíra {Janová},
title="Influence of Silumine Casting Microstrukture on Component Failure Resistance",
journal="Letecký zpravodaj",
year="2009",
volume="2009",
number="2",
month="December",
pages="30--35",
address="Česká Republika",
issn="1211-877X"
}