Publication result detail

Influence of microstructure composition on mechanical properties of austempered ductile iron

HANZLÍKOVÁ, K.; VĚCHET, S.; KOHOUT, J.

Original Title

Influence of microstructure composition on mechanical properties of austempered ductile iron

English Title

Influence of microstructure composition on mechanical properties of austempered ductile iron

Type

Peer-reviewed article not indexed in WoS or Scopus

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.

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

iron; phase transformation; tensile test; fatigue test; transmission electron microscopy

Key words in English

iron; phase transformation; tensile test; fatigue test; transmission electron microscopy

Authors

HANZLÍKOVÁ, K.; VĚCHET, S.; KOHOUT, J.

RIV year

2010

Released

15.03.2008

Publisher

Institute of Materials and Machine Mechanics, Slovak Academy of Sciences 2008

Location

Bratislava

ISBN

0023-432X

Periodical

KOVOVE MATERIALY-METALLIC MATERIALS

Volume

46

Number

2

State

Slovak Republic

Pages from

117

Pages to

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="KOVOVE MATERIALY-METALLIC MATERIALS",
  year="2008",
  volume="46",
  number="2",
  pages="117--121",
  issn="0023-432X"
}