Yttrium's Effect on the Hot Cracking and Creep Properties …

2. Materials and Methods. The exact chemical compositions (in mass%) of Hastelloy-X alloys with 0 and 0.12 yttrium are called HX and HX-a, respectively, and are shown in Table 1.These two specimens were built in the shape of a 45 × 45 × 45 mm cube by using the EOS M290 SLM machine (E.O.S., Robert-Stirling-Ring 1, 82152, Krailling, Bavaria, Germany) …

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Yttrium's Effect on the Hot Cracking and Creep Properties …

Despite having more cracks, the Y-added as-built Hastelloy-X specimen showed longer creep life and ductility than the Hastelloy-X specimen. This was mainly because of the formation of Y 2 O 3 and SiO 2 inside the grains. After solution treatment, the Y-added specimen's creep life was eight times longer than that of the Y-free solution-treated ...

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