Effect of rhenium addition on fracture toughness of tungsten at elevated temperatures

Recent progress in R&D on tungsten alloys for divertor structural and plasma facing materials

“…Even for small additions of Re, the solid solution softening process [10] is active and leads to ductilization and toughening [11]. The influence of alloying can be explained using density-functional theory (DFT).…”

Brittle fracture and the brittle-to-ductile transition of tungsten

“…Dedicated fracture studies with notched or pre-cracked specimens, however, are scarce. Some fracture data is available on tungsten and tungsten-rhenium alloys [48][49][50][51][52] but specimen conditions and microstructure are not well analyzed. A few detailed fracture experiments on textured polycrystalline rods are available, which allow to make contact to the single crystal experiments [25,44].…”

Chemically produced nanostructured ODS–lanthanum oxide–tungsten composites sintered by spark plasma

“…On the other hand, tungstenbased materials inherently exhibit low toughness and almost no ductility (bcc structure) so they cannot be employed for structural applications at temperatures lower than DBTT. Therefore, efforts have been directed to induce some plasticity and alloying addition has turned out to be an effective way to improve ductility by lowering the DBTT [7,10].…”