Determination of Eutectoid Transformation Temperatures in Ductile Cast Iron

Journal title

Archives of Foundry Engineering




No 4

Publication authors


Ductile cast iron ; Eutectoid transformation ; Cooling rate

Divisions of PAS

Nauki Techniczne


Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.


The paper proposes a methodology useful in verification of results of dilatometric tests aimed at determination of temperatures defining

the start and the end of eutectoid transformation in the course of ductile cast iron cooling, based on quenching techniques and

metallographic examination. For an industrial melt of ductile cast iron, the effect of the rate of cooling after austenitization at temperature

900°C carried out for 30 minutes on temperatures TAr1

start and TAr1

end was determined. The heating rates applied in the study were the

same as the cooling rates and equaled 30, 60, 90, 150, and 300°C/h. It has been found that with increasing cooling rate, values of

temperatures TAr1

start and TAr1

end decrease by several dozen degrees.


The Katowice Branch of the Polish Academy of Sciences


2015[2015.01.01 AD - 2015.12.31 AD]


Artykuły / Articles


ISSN 2299-2944