Details

Autor(en) / Beteiligte

• Veverka, Jakub
• Lukáč, František
• Kądzielawa, Andrzej P.
• Koller, Martin
• Chlup, Zdeněk
• Hadraba, Hynek
• Karlík, Miroslav
• Legut, Dominik
• Vontorová, Jiřina
• Chráska, Tomáš
• Vilémová, Monika

Titel

Ultrafine-grained W-Cr composite prepared by controlled W-Cr solid solution decomposition

Ist Teil von

• Materials letters, 2021-12, Vol.304, p.130728, Article 130728

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Thermal decomposition of SPS samples results in UFG microstructure (<200 nm).•Decomposed samples have up to 65% higher flexural strength, while 10% lower hardness.•Elastic properties of present phases can be accurately calculated by computer modelling. The application of non-equilibrium methods such as Mechanical Alloying and Field Assisted Sintering enables the formation of a single solid solution in immiscible systems, or the ones characterized by a miscibility gap. This work shows that W-Cr solid solution can be used as an intermediate step to produce ultrafine-grained composite alloys with rod-like microstructural features. It is shown that a significant increase in strength can be achieved without an increase in hardness using this top-down material design.