Publication detail

Optimization in Dwell Length of ADI Isothermal Transformation

Hanzlíková, K. Věchet, S. Kohout, J.

Czech title

Optimalizace délky izotermické transformace při výrobě izoterimcky zušlechtěné litiny s kuličkovým grafitem

English title

Optimization in Dwell Length of ADI Isothermal Transformation

Type

journal article - other

Language

en

Original abstract

Austempered ductile iron (ADI) is usually obtained by isothermal heat treatment. Owing to its excellent mechanical as well as technological properties, ADI belongs among prospective structural materials. Recently it is applied also to castings for dynamically loaded machine details, e.g. gear and traversing wheels, crankshafts of motor-cars, vans and trucks, swivel pins, rail brakes and pressure pipes in oil industry. Microstructure and mechanical properties of ADI can be substantially influenced by the condition of heat treatment. While the austenitization conditions play only marginal role, the conditions of isothermal transformation, i.e. transformation temperature and the dwell at it, influence the resulting structure of ADI and consequently its mechanical properties very substantially

Czech abstract

Izotermicky zušlechtěná tvárná litina, v současné době nazývaná ADI (austempered ductile iron), patří mezi perspektivní konstrukční materiály, zejména pro dynamicky namáhané strojní součásti. Její vlastnosti je možno ve velmi širokém rozsahu ovlivňovat podmínkami režimu tepelného zpracování. Zatímco podmínky austenitizace (teplota austenitizace 880 – 920 °C, výdrž na teplotě 1 – 3h) nehrají významnější roli, podmínky izotermické transformace, t.j. transformační teplota a doba výdrže na této teplotě, ovlivňují výslednou strukturu matrice ADI a tím i její mechanické vlastnosti zásadním způsobem

English abstract

Austempered ductile iron (ADI) is usually obtained by isothermal heat treatment. Owing to its excellent mechanical as well as technological properties, ADI belongs among prospective structural materials. Recently it is applied also to castings for dynamically loaded machine details, e.g. gear and traversing wheels, crankshafts of motor-cars, vans and trucks, swivel pins, rail brakes and pressure pipes in oil industry. Microstructure and mechanical properties of ADI can be substantially influenced by the condition of heat treatment. While the austenitization conditions play only marginal role, the conditions of isothermal transformation, i.e. transformation temperature and the dwell at it, influence the resulting structure of ADI and consequently its mechanical properties very substantially

Keywords in English

ADI, isothermal transformation, transformation dwell lenght, mechanical properties, fatigue properties

RIV year

2003

Released

25.11.2003

ISSN

1429-6055

Journal

Zeszyty naukowe politechniki Opolskiej seria Mechanika

Volume

76

Number

290

Pages count

6

BIBTEX


@article{BUT45468,
  author="Klára {Hanzlíková} and Stanislav {Věchet} and Jan {Kohout},
  title="Optimization in Dwell Length of ADI Isothermal Transformation",
  journal="Zeszyty naukowe politechniki Opolskiej seria Mechanika",
  year="2003",
  volume="76",
  number="290",
  month="November",
  issn="1429-6055"
}