Influence of Modification and Casting Technology on Structure of IN-713C Superalloy Castings

Journal title

Archives of Foundry Engineering




No 3

Publication authors


Innovative casting materials and technologies ; Nickel alloy IN-713C ; Surface and volume modification ; Cobalt aluminate ; Macrostructure

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 presents the results concerning impact of modification (volume and surface techniques), pouring temperature and mould

temperature on stereological parameters of macrostructure in IN713C castings made using post-production scrap. The ability to adjust the

grain size is one of the main issues in the manufacturing of different nickel superalloy castings used in aircraft engines. By increasing the

grain size one can increase the mechanical properties, like diffusion creep resistance, in higher temperatures. The fine grained castings. on

the other hand, have higher mechanical properties in lower temperatures and higher resistance to thermal fatigue. The test moulds used in

this study, supplied by Pratt and Whitney Rzeszow, are ordinarily used to cast the samples for tensile stress testing. Volume modification

was carried out using the patented filter containing cobalt aluminate. The macrostructure was described using the number of grains per


, mean grain surface area and shape index. Obtained results show strong relationship between the modification technique, pouring

temperature and grain size. There was no significant impact of mould temperature on macrostructure.


The Katowice Branch of the Polish Academy of Sciences




Artykuły / Articles


ISSN 2299-2944


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