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Direct Energy Deposition of TiAl for Hybrid Manufacturing and Repair of Turbine Blades

التفاصيل البيبلوغرافية
العنوان: Direct Energy Deposition of TiAl for Hybrid Manufacturing and Repair of Turbine Blades
المؤلفون: Silja-Katharina Rittinghaus, Janett Schmelzer, Marcus Willi Rackel, Susanne Hemes, Andreas Vogelpoth, Ulrike Hecht, Andreas Weisheit
المصدر: Materials, Vol 13, Iss 19, p 4392 (2020)
بيانات النشر: MDPI AG, 2020.
سنة النشر: 2020
المجموعة: LCC:Technology
LCC:Electrical engineering. Electronics. Nuclear engineering
LCC:Engineering (General). Civil engineering (General)
LCC:Microscopy
LCC:Descriptive and experimental mechanics
مصطلحات موضوعية: titanium aluminides, additive manufacturing, microstructure, phase distribution, mechanical properties, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
الوصف: While repair is mainly used to restore the original part geometry and properties, hybrid manufacturing aims to exploit the benefits of each respective manufacturing process regarding either processing itself or resulting part characteristics. Especially with the current implementation of additive manufacturing in the production of TiAl, turbine blades for both hybrid manufacturing and repair new opportunities are enabled. One main issue is the compatibility of the two or more material types involved, which either differ regarding composition or microstructure or both. In this study, a TNMTM-alloy (Ti-Nb-Mo) was manufactured by different processes (casting, forging, laser additive manufacturing) and identically heat-treated at 1290 °C. Chemical compositions, especially aluminum and oxygen contents, were measured, and the resulting microstructures were analyzed with Scanning Electron Microscopy (SEM) and High-energy X-ray diffraction (HEXRD). The properties were determined by hardness measurements and high-temperature compression tests. The comparison led to an overall assessment of the theoretical compatibility. Experiments to combine several processes were performed to evaluate the practical feasibility. Despite obvious differences in the final phase distribution caused by deviations in the chemical composition, the measured properties of the samples did not differ significantly. The feasibility of combining direct energy deposition (DED) with either casting or laser powder bed fusion (LPBF) was demonstrated by the successful build of the dense, crack-free hybrid material.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1996-1944
Relation: https://www.mdpi.com/1996-1944/13/19/4392; https://doaj.org/toc/1996-1944
DOI: 10.3390/ma13194392
URL الوصول: https://doaj.org/article/6b481c0cd68a4dc38fa5a977da58beb6
رقم الأكسشن: edsdoj.6b481c0cd68a4dc38fa5a977da58beb6
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19961944
DOI:10.3390/ma13194392