Effect of modification and cooling rate on the macrostructure of IN-713C alloy

Journal Title: Archiwum Odlewnictwa - Year 2009, Vol 9, Issue 3

Abstract

The results of investigations of the effect of modification and cooling rate on the macrostructure of castings made from IN-713C nickel superalloy were described. As a modifier, cobalt aluminate CoAl2O4 in composition with aluminium powder and colloidal silica was used. Changes in the cooling rate were obtained by the use of a stepped test piece with the steps of 6, 11, 17 and 23 mm thickness. As a criterion for the evaluation of casting macrostructure, the stereological parameters, like grain count, relative surface area, shape factor, and indeces of the grain size and shape homogeneity, were applied. The modification treatment was observed to change the grain type from columnar to equiaxial. The stereological parameters of the equiaxial grains depended to a great extent on the cooling rate of the individual elements of a cast stepped test piece.

Authors and Affiliations

F. Binczyk, J. Śleziona, A. Kościelna

Keywords

Related Articles

Influence of modification on the structure and morphology of fractures of silumin AlSi6Cu4

The results of modification of silumin AlSi6Cu4 with additions of AlTi5B1 and AlSr10 have been showed. It was found that the modification has favorable influence into structure and fracture morphology of tested alloy.

Structure homogeneity as a parameter for evaluation of composite casting quality

The structure of composite materials is be usually described as a compound of two structural components called matrix and reinforcement, respectively. A classic, commonly known example is polyester resin reinforced with...

Primary and secondary crystallization of modified hypoeutectic chromium cast iron

The paper presents investigations of crystallization of modified hypoeutectic wear resistant chromium cast iron which contains carbon about 2% and chromium on three levels (12%, 18% and 25%). Three substances were applie...

Investigations of the Quality of the Reclaim of Spent Moulding Sands with Organic Binders

Modern investigation methods and equipment for the quality estimation of the moulding sands matrices with organic binders, in their circulation process, are presented in the paper. These methods, utilising the special eq...

Heat treatment of the EN AC-AlSi9Cu3(Fe) alloy

Silumins are widely used in automotive, aviation and shipbuilding industries; as having specific gravity nearly three times lower than specific gravity of cast iron the silumins can be characterized by high mechanical p...

Download PDF file
  • EP ID EP71984
  • DOI -
  • Views 119
  • Downloads 0

How To Cite

F. Binczyk, J. Śleziona, A. Kościelna (2009). Effect of modification and cooling rate on the macrostructure of IN-713C alloy. Archiwum Odlewnictwa, 9(3), 13-16. https://europub.co.uk/articles/-A-71984