20.500.12556/DKUM-53273 Razpad [alfa]-AlB12 v zlitinah Al-B in Al-Ti-B Decomposition of [alpha]-AlB12 in Al-B and Al-Ti-B alloys V tem delu smo ugotovili, da faza @-AIB12 ne razpade pri ohlajanju zlitin Al-B in Al-Ti-B z dvofaznega področja talina + @-AIB12 oziroma s trofaznega področja talina + @-AIB12 + TiB2 do sobne temperature. Razpade šele pri izotermnem žarjenju zlitin pod -900°C, čeprav bi po podatkih iz dostopne literature morala razpasti že pod 980°C. Razpad faze @-AIB12 poteka z raztapljanjem @-AIB12 in rastjo AIB2. Kinetika razpada je hitrejša v ternarnih zlitinah Al-Ti-B kot v binarnih Al-B, ker faza TiB2 olajša nastanek reakcijskega produkta AIB2. In this work it was found out that decomposition of the high-temperature phase @-AIB12 doesn´t occur during cooling of the Al-B and Al-Ti-B alloys from the two-phase region L + AIB12 or the three-phase region L + @-AIB12 + TiB2. It decomposes only in the course of isothermal annealing under -900°C. According to data in the open literature its decomposition should start alredy under 980°C. The decomposition of @-AIB12 takes place by dissolution of @-AIB12 and growth of AIB2. The decomposition rate is higher in ternary Al-Ti-B than in binary Al-B alloys, because TiB2 phase promotes the nucleation of the reaction product AIB2. true false false Inštitut za kovinske materiale in tehnologije Slovenski jezik Angleški jezik Delo ni kategorizirano 2015-07-10 19:53:32 2015-07-10 19:53:32 2022-06-02 03:09:51 2019-07-11 08:06:00 1998 0 0 str. 35-39 št. 1/2 Letn. 32 1998 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 669 31742209 3804182 1318-0010 URN:SI:UM:DK:NQUM1KDI http://www.dlib.si/details/URN:NBN:SI:doc-198AICW8 1 https://dk.um.si/Dokument.php?lang=slv&id=77833 Fakulteta za strojništvo 0 0 0