Quantitative analysis of porosity in a TiAl alloy of the Ti–Al–V–Nb–Cr–Gd system produced by selective electron beam melting and hot isostatic pressing
IF 0.9 4区 材料科学Q4 METALLURGY & METALLURGICAL ENGINEERING
P. V. Panin, I. A. Bogachev, A. V. Smirnov, E. A. Lukina
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引用次数: 0
Abstract
The authors have carried out a comparative analysis of the capabilities of various methods for assessing porosity of 3D-printed samples of a new six-component intermetallic beta-solidifying TiAl alloy Ti–44.5Al–2V–1Nb–2Cr–0.1Gd, at. % (Ti–31.0Al–2.5 V–2.5Nb–2.5Cr–0.4Gd, wt. %) after selective electron beam melting (SEBM) and hot isostatic pressing (HIP). A satisfactory agreement between the optical microscopy (OM) and X-ray computed tomography (CT) results has been shown. It was established that without specifying individual technological parameters of the SEBM process to form contours of the parts (samples), the thickness of the most defective surface layers may reach 2.0 mm. It was demonstrated that HIP treatment in the temperature range of the single α phase field (above the γ‑solvus temperature) leads to an almost complete elimination of residual porosity (to a level of 0.01 vol. % and less).
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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