Quantification of iron in aluminium-silicon foundry alloys via thermal analysis

1997 ◽  
Vol 10 (3) ◽  
pp. 131-145 ◽  
Author(s):  
R. I. Mackay ◽  
J. E. Gruzleski
Keyword(s):  
Thermal Analysis ◽  
Foundry Alloys

Analysis of the Antimony and Strontium Cross-Effects in Al-Si Foundry Alloys

2014 ◽  
Vol 790-791 ◽  
pp. 464-469
Author(s):  
Monika Tokár ◽  
György Fegyverneki ◽  
Valéria Mertinger
Keyword(s):  
Thermal Analysis ◽  
Image Analysis ◽  
Eutectic Temperature ◽  
Eutectic Silicon ◽  
Research Work ◽  
Cooling Curves ◽  
Computer Image Analysis ◽  
Unmodified Alloy ◽  
Foundry Alloys ◽  
Modification Rate

In this work we show the effect of various concentrations of strontium and antimony on the level of modification in the Al-Si alloy. The scale of the modification rate was determined in two ways: thermal analysis was performed and the images of the samples. The eutectic temperature registered during the analysis were compared to the eutectic temperature of the unmodified alloy and on the basis of them was determined which samples are registered as modified, which are not. On the basis of the results of the cooling curves the partially modified category was introduced, if the ΔT value is less than 9°C and more than 7.5°C. The samples made of the alloys were examined with a computer image analysis and the samples were grouped on the basis of the size of the eutectic silicon phases. The aim of our research work was the examination of cross-effects of strontium and antimony.

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