Publication detail
Influence of microstructure composition on mechanical properties of austempered ductile iron
HANZLÍKOVÁ, K. VĚCHET, S. KOHOUT, J.
Czech title
Vliv mikrostruktury na mechanické vlastnosti izotermicky zušlechtěné tvárné litiny
English title
Influence of microstructure composition on mechanical properties of austempered ductile iron
Type
journal article - other
Language
en
Original abstract
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.
Czech abstract
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.
English abstract
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.
Keywords in Czech
železo; fázové transformace; zkouška tahem; únavová zkouška; transmisní elektronová mikroskopie
Keywords in English
iron; phase transformation; tensile test; fatigue test; transmission electron microscopy
RIV year
2008
Released
15.03.2008
Publisher
Institute of Materials and Machine Mechanics, Slovak Academy of Sciences 2008
Location
Bratislava
ISSN
0023-432X
Journal
Kovové materiály
Volume
46
Number
2
Pages from–to
117–121
Pages count
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"
}