P. V. Panin, I. A. Bogachev, E. B. Alekseev, E. A. Lukina, D. I. Sukhov, S. A. Naprienko
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引用次数: 0
Abstract
At the NRC “Kurchatov Institute”—VIAM, metal powder compositions (MPC) of domestic heat-resistant titanium aluminide alloys were fabricated using electrode induction melting gas atomization. They included Ti–44.5AI–2V–1Nb–2Cr–0.1Gd (at %) γ‑TiAl alloy (grade VIT7L) and Ti–22Al–23Nb–0.5Mo–0.8Zr–1.4 V–0.4Si–0.2C (at. %) orthorhombic Ti2AlNb alloy (grade VTI‑4). Elemental analysis of the metal powders demonstrated a close match to the initial cast electrodes. The powders consist of rapidly solidified in-situ particles with dendritic structure and metastable phase compositions of (γ+α(α2)+β) and (β+α2+O), typical for the quenched state of the VIT7L and VTI‑4 alloys, respectively. The MPCs of the target fraction (40–100 µm) displayed high quality indices of flowability and sphericity, making them suitable for additive manufacturing by selective electron beam melting (SEBM) technology.
期刊介绍：
Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956.
Basic topics covered include:
State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining;
Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment;
Automation and control;
Protection of labor;
Protection of the environment;
Resources and energy saving;
Quality and certification;
History of metallurgy;
Inventions (patents).
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