Вплив перемішування розплаву на структуру та властивості спрямовано закристалізованого сплаву Mo – 17,5Si – 8B
By method of crucibleless zone melting was obtained alloys Mo – 17,5% Si – 8% B (at.%), with additional melt mixing by rotating cylindrical workpiece around its axis. Structure of obtained alloy is a grain of molybdenum solid solution, around which are located two - and three - phase eutectics (Mo –...
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| Datum: | 2018 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Physico- Technological Institute of Metals and Alloys of the NAS of Ukraine
2018
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| Online Zugang: | https://momjournal.org.ua/index.php/mom/article/view/2018-1-3 |
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| Назва журналу: | Metal Science and Treatment of Metals |
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Metal Science and Treatment of Metals| Zusammenfassung: | By method of crucibleless zone melting was obtained alloys Mo – 17,5% Si – 8% B (at.%), with additional melt mixing by rotating cylindrical workpiece around its axis. Structure of obtained alloy is a grain of molybdenum solid solution, around which are located two - and three - phase eutectics (Mo – Mo5SiB2), (Mo3Si - Mo5SiB2) and (Mo – Mo3Si – Mo5SiB2). Due to solid-hardening, the microhardness of molybdenum solid solution increases by more than 4 times compared with pure molybdenum. The crack growth resistance of eutectic areas lies within 14 MPa∙м1/2. It is shown that the directed crystallized Mo – Si – B alloy is characterized by increased resistance of creep, which indicates the perspective of its use in nodes of high – temperature appliance. |
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