Physical Metallurgy of Refractory Alloys (2nd Edition)
A special issue of Metals (ISSN 2075-4701).
Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 1185
Special Issue Editor
Interests: mechanical properties; micromechanics; martensitic transformations; physical metallurgy of tungsten alloys
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The high melting temperature, high strength at elevated temperatures, low thermal expansion, and high heat conduction of refractory metal alloys make them a favored candidate material for terrestrial energy production
facilities. Niobium, molybdenum, tantalum, tungsten, and their alloys are fabricated as powders through the reduction of their oxides, consolidation by sintering, activated sintering, or liquid phase sintering. Heavy tungsten alloys bound by nickel, iron, or copper are used as radiation shields, balancing weights, and penetrators. At higher temperatures, refractory alloys are used for tools and molds for metal and glass forming and in load-bearing parts of jet engines. At higher temperatures under a protective atmosphere, tungsten is used for heating filaments and elements, and electrodes are used for welding. The strong chemical bonds of refractory metals make their microstructure stable and generate potential for developing high-strength alloys for elevated temperature service. However, applications are limited by the brittle–ductile transition at relatively high temperatures and their high reactivity with oxygen, as well as the volatility of their oxides. These limitations are encountered by alloying with other refractory metals. The high bond strength and high atomic mass make them stable against radiation damage, and therefore leading candidates for the first wall material in fusion reactors.
A Special Issue of Metals will be devoted to the physical metallurgy of
refractory alloys. It intends to give an account of the scientific and technological state of the art of recent and potential developments of refractory alloys and environmental protection (see the Keywords/Topics below). Your contribution to this work will be highly valued and appreciated
Prof. Dr. Roni Z. Shneck
Guest Editor
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Keywords
- refractory metal alloys and coatings
- sintering and forming of refractory alloys
- tungsten heavy metal
- tungsten penetrators
- high-strength alloys
- elevated temperature and oxidation-resistant refractory alloys
- tools and molds
- refractory radiation shields
- first wall reactor material
- radiation damage
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