20 KB1772 KB19 KB200020242006Breskvar, BojanChiarmetta, GianluigiGiordano, PaolaGodec, MatjažTorkar, Matjažštevilka:2letnik:406 stranistr. 73-78ISSN:1580-2949COBISSID:425130URN:URN:NBN:SI:doc-70Y6LD0HenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijemikrostrukturapreiskava materialovtiksotropijavključkiMicrostructure evaluation of an NRC-processed automotive component| Ocena mikrostrukture avtomobilske komponente, izdelane po postopku NRC|In this paper we present the theoretical background of the New Rheocasting (NRC) process, which is based on the thixotropic behavior of a melt with a globulitic primary phase. The NRC process represents an economic alternative to the forging process. The main goal of this study was an evaluation of the microstructure of this innovative and ecological production process. We present some characteristic microstructures observed during the evaluation of a slurry and a real automotive component. Some dendritic forms of the primary alphasub{Al} phase were observed in the component, which means there are possibilities for a further improvement of the temperature regime. An increased content of the eutectic phase near the surface was observed and inclusions with strontium were found in the eutectic phasePredstavljene so teoretske osnove novega postopka rheocasting (NRC), ki temelji na tiksotropnem vedenju taline z globulitno primarno fazo in je ekonomska alternativa kovanju. Glavni namen te študije je bila ocena mikrostrukture tega inovativnega in ekološkega proizvodnega procesa. Predstavljene so značilnosti mikrostrukture, ki so bile opažene med oceno surovca in realne komponente, izdelane po postopku NRC. Blizu površine je bila povečana vsebnost evtektika, v njem pa so bili vključki s stroncijemTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije