Publication detail
THE EFFECT OF V-CARBIDES PRECIPITATION ON TENSILE AND FATIGUE PROPERTIES OF HEAT TREATED SPRING STEELS
OLINA, A. PÍŠKA, M.
Czech title
ÚČINKY PRECIPITACE V-KARBIDŮ NA PEVNOST V TAHU A ÚNAVU TEPELNÝCH ZPRACOVANÝCH OCELÍ
English title
THE EFFECT OF V-CARBIDES PRECIPITATION ON TENSILE AND FATIGUE PROPERTIES OF HEAT TREATED SPRING STEELS
Type
conference paper
Language
en
Original abstract
This paper deals with a comparison between the standard spring steel grade 0.54C-1.45Si-0.7Mn-0.7Cr and a grade micro-alloyed spring steel with 0.12 % V in terms of microstructure, grain refinement, strength and ductile properties. The micro-alloyed steel is supposed to provide a better performance as it had been proven for hot-rolled and heat treated wire. The vanadium micro-alloyed steel grades are quenched in oil typically, so high strengths and high ductility can be expected. It has been confirmed especially for induction heat treatment and quenching temperatures 810-910 °C, and the tempering temperatures 430 °C and 450 °C. That phenomenon can be explained with the strengthening effect and precipitation of vanadium carbides that suppress the grain coarsening effectively. The mechanism has been confirmed with electron scanning and transmission microscopy.
Czech abstract
Tato práce se zabývá srovnáním vlastnostní standardní oceli pro pružiny o hmotnostním složení 0,54C – 1,45Si – 0,7Mn – 0,7Cr a mikrolegované oceli pro pružiny z oceli s 0,12% V z hlediska mikrostruktury, zjemnění zrna, pevnosti a tvařitelných vlastností. Mikrolegovaná ocel by měla poskytovat lepší výkon, jak bylo prokázáno u drátu válcovaného za tepla a tepelného zpracování. Typy vanadia z mikrolegované oceli jsou typicky kaleny do oleje, takže lze očekávat vysokou pevnost a vysokou tažnost. Bylo potvrzeno zejména při indukčním tepelném zpracování a teplotách při kalení 810-910 ° C a při temperoračních teplotách 430 ° C a 450 ° C. Tento jev lze vysvětlit precipitací karbidů vanadu, které účinně potlačují růst zrna. Mechanismus byl potvrzen pomocí elektronové skenovací a transmisní mikroskopie.
English abstract
This paper deals with a comparison between the standard spring steel grade 0.54C-1.45Si-0.7Mn-0.7Cr and a grade micro-alloyed spring steel with 0.12 % V in terms of microstructure, grain refinement, strength and ductile properties. The micro-alloyed steel is supposed to provide a better performance as it had been proven for hot-rolled and heat treated wire. The vanadium micro-alloyed steel grades are quenched in oil typically, so high strengths and high ductility can be expected. It has been confirmed especially for induction heat treatment and quenching temperatures 810-910 °C, and the tempering temperatures 430 °C and 450 °C. That phenomenon can be explained with the strengthening effect and precipitation of vanadium carbides that suppress the grain coarsening effectively. The mechanism has been confirmed with electron scanning and transmission microscopy.
Keywords in Czech
pružinová ocel, mikro-legování, karbidy vanadu, precipitáty, plasticita
Keywords in English
spring steel, micro-alloying, vanadium carbides, precipitates, plasticity
Released
15.04.2018
Publisher
Tanger Ltd.
Location
Ostrava
ISBN
978-80-87294-79-6
Book
METAL 2017
Edition number
1
Pages from–to
949–955
Pages count
6
BIBTEX
@inproceedings{BUT147167,
author="Anna {Olina} and Miroslav {Píška},
title="THE EFFECT OF V-CARBIDES PRECIPITATION ON TENSILE AND FATIGUE PROPERTIES OF HEAT TREATED SPRING STEELS",
booktitle="METAL 2017",
year="2018",
month="April",
pages="949--955",
publisher="Tanger Ltd.",
address="Ostrava",
isbn="978-80-87294-79-6"
}