EFFECT OF HEAT TREATMENT ON STRUCTURE OF THE INCONEL 740 TYPE ALLOY

The Inconel 740 type nickel alloy was melted in a vacuum, medium frequency induction furnace. During melting the inert gas (argon) atmosphere was used Metal was poured into a ceramic mould based on ethyl silicate. ...

more >>

QUANTITATIVE ANALYSIS OF CAST IRON MICROSTRUCTURE IN TERMS OF THE APPARATUS AND METHODOLOGY

In this work the results of the application of different imaging techniques and image analysis systems for measurements of chosen either stereological parameters or geometrical features for some of morphology model...

more >>

WETTING and JOINING of HfB₂ and Ta with Ni

The wetting behavior of Ni on a HfB2/Ta assembly was examined in vacuum using dense HfB2 (99.5% purity) produced, without sintering aids, by HP-HT at 7 GPa. The real-time imaging by a high res...

more >>

EFFECT OF CALCIUM CARBIDE MODIFICATION ON THE MECHANICAL PROPERTIES OF BA 1044 BRONZE

The effect of solution heat treatment with jet cooling and modification with C + Ca and CaC2 on the behaviour of BA1044 alloy in as-cast state, and after solution heat treatment and toughening was examined. The microjet modification and...

more >>

The optimisation of heat treatment parameters for selected cast AlZnMgCu(Mn) alloys

The publication presents the results of optimisation of parameters of complex heat treatment of as-cast AlZnMgCu(Mn) alloys consisting in retrogression and reaging (RRA, Retrogression and Re-aging). For comparison...

more >>

Application of X-ray computed tomography to compare gravity casting to counter-gravity low-pressure air-melted process

The purpose of this paper is to evaluate the internal structure of alloys similar to AlSi9Mg (EN AC-43300), made with the counter-gravity low-pressure air-melted process (CLA) and with the gravity casting process. The X-ray computed tomography (CT...

more >>

The use of X-ray computed tomography as a tool in assisting cast material testing

Casting manufacture depends on many factors. Technical specifications determine the required quality, which is essential for casting acceptance or rejection. Practice shows that making castings without defects is simply not possible. However, the ...

more >>

A comparison of various imaging modes in scanning electron microscopy during evaluation of selected Si/refractory sessile drop couples after wettability tests at ultra-high temperature

In this work, FEI SciosTM field emission gun scanning electron microscope (FEG SEM) equipped with a unique combination of analytical and imaging detectors was utilized to examine structure and chemistry of selected Si/refractory couples...

more >>

The effect of alloying additions on the structure and properties of Al-Mg-Si-Mn casting alloy – A review

The designing of new light-weight alloys for continuous replacement of cast iron and steel parts is now the mainstream regarding energy saving and improvement of fuel consumption in the transportation sector. Parallel with the remarkable advances ...

more >>