The Impact of Al-Ti-B Grain-Refiners from Different Manufacturers on Wrought Al-Alloy

• Autorzy: Vončina M. , Medved J. , Jerina L. , Paulin I. , Cvahte P. , Steinacher M.

Identyfikatory

DOI

10.24425/amm.2019.127607

• Języki publikacji: EN

Abstrakty

EN

To investigate the impact of various Al-Ti-B grain-refiners on solidification and grain-refining performance, a wrought aluminium alloy AA6182 was used. Three different grain-refiners from different manufacturers were used to establish the efficiency, i.e. contact time before casting, on the primary solidification and grain formation size. The primary solidification of α-Al grains at inoculation was observed by using thermal analysis (TA). Differential scanning calorimetry (DSC) was used in order to analyze the quality of various grain-refiners. The size of the primary grains was analyzed using optical microscopy (OM). Scanning electron microscopy (SEM) was used to estimate the size and distribution of Al₃Ti and TiB₂ particles in various grain-refiners and to establish the best efficiency of the investigated grain-refiners. Within 1-4 min of inoculation the smallest fine equiaxed grains were achieved when either one of the investigated grain-refiners was added. It was established, that grain-refiner A contains higher content of impurities which do not melt in the experimental temperature range made by DSC method. The most pure grain-refiner turned out to be grain-refiner B, in which the most optimal number of TiB₂ particles and particle size distribution was found.

Słowa kluczowe

EN

Al-Ti-B grain-refiners; aluminium alloy AA6182; TiB2 particles; Al3Ti particles; inoculation potential

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 739--746
• Opis fizyczny: Bibliogr. 26 poz., fot., rys., tab.

Twórcy

autor

Vončina M.

• University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, 1000 Ljubljana, Slovenia

autor

Medved J.

• University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, 1000 Ljubljana, Slovenia

autor

Jerina L.

• University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, 1000 Ljubljana, Slovenia

autor

Paulin I.

• Institut of Metals and Technology, Lepi Pot 11, 1000 Ljubljana

autor

Cvahte P.

• Impol Group, Partizanska 38, 2310 Slovenska Bistrica

autor

Steinacher M.

• Impol Group, Partizanska 38, 2310 Slovenska Bistrica

Bibliografia

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Uwagi

EN

1. This work was supported by A Republic of Slovenia, Ministry of Education, Science and Sport and by European Commission, European Regional Development. This work was made in a frame of program Materials and Technologies for New Applications (MARTINA, grand number: C3330-16-529008).

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).