Search for dissertations about: "refractory high-entropy alloys"
Showing result 1 - 5 of 10 swedish dissertations containing the words refractory high-entropy alloys.
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1. Alloy Design and Optimization of Mechanical Properties of High-Entropy Alloys
Abstract : High-entropy alloys (HEAs) are described as alloys containing multi-principal elements in equal or close to equal atomic percentage. HEAs are considered as potential structural materials for high-temperature applications; where alloy design and optimization of mechanical properties is extremely critical. READ MORE
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2. Refractory High-entropy Alloy and Nitride Thin Films
Abstract : This thesis focuses on understanding the process-structure-property relation-ships for several refractory-metal-based high-entropy alloys and nitrides synthesized by magnetron sputtering. The thesis begins with the growth of TiZrNbTaNx understoichiometric nitrides by controlling substrate temperature and nitrogen flow ratio fN. READ MORE
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3. Quantification of local lattice distortions in refractory high-entropy alloys by scattering-based techniques
Abstract : The increasing demand for advanced structural materials for use in extreme conditions, particularly including the aerospace applications, has promoted the development of refractory high-entropy alloys (RHEAs). A deeper understanding of the interaction between microstructure and properties is essential to overcome the scientific challenges associated with these alloys. READ MORE
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4. Microstructure and Mechanical Properties of Plasma Atomized Refractory Alloys
Abstract : Plasma centrifugal atomization is a method widely used in the production of spherical powders of metals and alloys with relatively low melting points. A novel plasma centrifugal atomization process suitable for high melting point materials (i.e. 3500 ᵒC and above) was developed by Metasphere Technology AB, currently Höganäs Sweden AB. READ MORE
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5. Refractory High Entropy Alloys and Films for High Temperature Applications
Abstract : High-entropy alloy (HEA) is a multi-component alloy constituting five or more principal elements in equi- or near equi-atomic percentages. The high configurational entropy in a HEA composition, in contrast to conventional alloys, leads to the stabilisation of the alloying elements in stable solid solutions of face-centred-cubic (FCC), body-centred-cubic (BCC) and/or amorphous structures. READ MORE