Wpływ parametrów spawania opornościowo-impulsowego superstopów niklu na wybrane właściwości połączenia *

STRESZCZENIE: Zaprezentowano mikrostrukturę oraz badania mechaniczne spawów cienkich blach z superstopów na bazie niklu: Haynes 230 i Hastelloy X. Spoiny wykonano metodą mikrospawania opornościowo-impulsowego z wykorzystaniem urządzenia WS 7000S. Mikrotwardość złączy zmierzono twardościomierzem Matsuzawa Vickers MX 100 przy obciążeniu 100 G (0,98 N). Obserwacje metalograficzne przygotowanych zgładów przeprowadzono za pomocą mikroskopu optycznego Nikon Eclipse MA200 przy różnych powiększeniach. Badania mikrostruktury metalograficznej uzupełniono analizą liniową składu chemicznego. Wykorzystano do tego mikrosondę elektronową typu OXFORD X-MAX.

SŁOWA KLUCZOWE: mikrospawanie, inżynieria powierzchni, mikrostruktura, mikrotwardość

ABSTRACT: Microstructure and mechanical tests of welds of thin sheets made from nickel-based super-alloys (Haynes 230 and Hastelloy X) were presented. The welds were made using the resistive-pulse micro-welding method using the WS 7000S device. The micro-hardness of the joints was measured with a Matsuzawa Vickers MX 100 hardness tester at 100 G (0.98 N). Metallographic observations of the prepared micro-sections were performed using the Nikon Eclipse MA200 optical microscope at various magnifications. The metallographic microstructure studies were supplemented by linear analysis of the chemical composition, for which the OXFORD X-MAX electron microscope was applied.

KEYWORDS: microwelding, surface engineering, microstructure, microhardness

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DOI: https://doi.org/10.17814/mechanik.2017.11.180