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. ...

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CAST Al-Si MATRIX COMPOSITES REINFORCED WITH INTERMETALLIC PHASES

In the present paper research results of microstructure and selected mechanical properties of composite on EN AC-AlSi11 alloy matrix with reinforcement in the form of particle of Cr-Fe-C alloy (composite ex situ) and carbonitrides Ti, Zr, V (compo...

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Solidification path of the AlFeMnSi alloys in a stage of primary intermetallic phases precipitation

In this work, an analysis of the solidification course of the AlFeMnSi alloys was carried out in the Al alloys of Fe, Mn, and Si concentrations in a range supplementary for those examined until now. The morphology of the pre-dendrite and pre-eutec...

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The role of modification processes in ledeburitic class cast steel tribological properties

The work focuses on tribological tests of G200CrNiMo4-3-3 cast steel in the state without modification as well as after modification with FeSi and FeB. The FeSi modification reduced the secondary cementite precipitation in the Widmanstätten p...

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New ledeburite cast steel with precipitation hardened matrix

A new ledeburite cast steel was designed based on a matrix precipitation hardened with intermetallic compounds of a chemical composition enriched by adding about 4.25% V totally balanced with carbon. A martensitic-austenitic matrix with a ledeburi...

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Evaluation of selected parameters of pressure casting on the structure of silumin AlSi9Cu3

The article presents the results of investigations of the effect of selected casting parameters on the structure of casts made under high pressure by means of the casting machine produced by BÜHLER, type H630-B, out of the AlSi9Cu3 alloy from...

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Effect of chromium on the crystallization process, microstructure and properties of hypoeutectic Al-Si alloy

The paper presents the results of studies of hypoeutectic silumin with a chromium addition used for pressure casting. A silumin with the composition similar to that of EN AC-46000 was used as the initial one. In order to introduce chromi...

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Microstructure formation and grain refinement of Al-Mg-Si-Mn casting alloys

Together with development of casting technology for Al-Si-Mg alloys, new groups of casting materials are undergoes its implementation into foundry practice. Al-Mg-Si casting alloys possessed several advantages such as good strength ...

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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 ...

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