Detail publikace
Vliv mikrostruktury na mechanické vlastnosti izotermicky zušlechtěné tvárné litiny
HANZLÍKOVÁ, K. VĚCHET, S. KOHOUT, J.
Český název
Vliv mikrostruktury na mechanické vlastnosti izotermicky zušlechtěné tvárné litiny
Anglický název
Influence of microstructure composition on mechanical properties of austempered ductile iron
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
Two austempered ductile iron (ADI) heats transformed at a temperature of 380oC in periods ranging from 2 minutes to 9 hours have been strudied in detail, with emphasis on the relation between the microstructure matrix composition and mechanical propeties. The matrix microstructure and mechanical properties of ADI are influenced especially by the dwell time (sometimes also referred to as holding time) at isothermal transformation temperature. ADI matrix called ausferrite consists primarily of acicular ferrite and stabilizued austenite. However, for short dwells some amount of martensite can occur in the matrix, which degrades the mechanical properties of ADI. The ADI with optimal combination of mechanical properties was obtained for a transformation dwell of 60 minutes, when the maximum amount of stabilized austenite in the matrix microstructure was obtained.
Český abstrakt
Two austempered ductile iron (ADI) heats transformed at a temperature of 380oC in periods ranging from 2 minutes to 9 hours have been strudied in detail, with emphasis on the relation between the microstructure matrix composition and mechanical propeties. The matrix microstructure and mechanical properties of ADI are influenced especially by the dwell time (sometimes also referred to as holding time) at isothermal transformation temperature. ADI matrix called ausferrite consists primarily of acicular ferrite and stabilizued austenite. However, for short dwells some amount of martensite can occur in the matrix, which degrades the mechanical properties of ADI. The ADI with optimal combination of mechanical properties was obtained for a transformation dwell of 60 minutes, when the maximum amount of stabilized austenite in the matrix microstructure was obtained.
Anglický abstrakt
Two austempered ductile iron (ADI) heats transformed at a temperature of 380oC in periods ranging from 2 minutes to 9 hours have been strudied in detail, with emphasis on the relation between the microstructure matrix composition and mechanical propeties. The matrix microstructure and mechanical properties of ADI are influenced especially by the dwell time (sometimes also referred to as holding time) at isothermal transformation temperature. ADI matrix called ausferrite consists primarily of acicular ferrite and stabilizued austenite. However, for short dwells some amount of martensite can occur in the matrix, which degrades the mechanical properties of ADI. The ADI with optimal combination of mechanical properties was obtained for a transformation dwell of 60 minutes, when the maximum amount of stabilized austenite in the matrix microstructure was obtained.
Klíčová slova česky
železo; fázové transformace; zkouška tahem; únavová zkouška; transmisní elektronová mikroskopie
Klíčová slova anglicky
iron; phase transformation; tensile test; fatigue test; transmission electron microscopy
Rok RIV
2008
Vydáno
15.03.2008
Nakladatel
Institute of Materials and Machine Mechanics, Slovak Academy of Sciences 2008
Místo
Bratislava
ISSN
0023-432X
Časopis
Kovové materiály
Ročník
46
Číslo
2
Strany od–do
117–121
Počet stran
5
BIBTEX
@article{BUT48602,
author="Klára {Hanzlíková} and Stanislav {Věchet} and Jan {Kohout},
title="Influence of microstructure composition on mechanical properties of austempered ductile iron",
journal="Kovové materiály",
year="2008",
volume="46",
number="2",
month="March",
pages="117--121",
publisher="Institute of Materials and Machine Mechanics, Slovak Academy of Sciences 2008",
address="Bratislava",
issn="0023-432X"
}