Der Spröd-duktil-Übergang in ultrafeinkörnigem Wolfram
Abstract
High brittle-ductile transition temperatures preclude the use of conventionally manufactured tungsten (W) as a structural material. Ultrafine grained (UFG) W materials, however, exhibit the brittle-ductile transition at very low temperatures and consequently exhibit room-temperature ductility. The correlative microstructure analysis revealed a strong correlation between the transition temperature and the mean grain boundary spacing along the crack front.
Keywords
kink pair mechanism; Arrhenius activation energy; brittle-ductile transition; ultrafine grained; Kinkenpaarmechanismus; Arrhenius-Aktivierungsenergie; Spröd-duktil-Übergang; ultrafeinkörnig; tungsten; WolframDOI
10.5445/KSP/1000153067ISBN
9783731512646Publisher
KIT Scientific PublishingPublisher website
https://www.ksp.kit.edu/index.php?link=shop&sort=allPublication date and place
2023Series
Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie, 118Classification
Mechanical engineering & materials