Ksenofontov VA, Mazilova TI, Sadanov EV, Dudka OV, Mazilov AA, Starchenko IV, and Mikhailovskij IM
Helium Induced Reduction of the Grain-Boundary Tensile Strength in Tungsten
We perform an experimental investigation and computer modeling of the influence of the heliu m segregation on the inherent strength of high-angle grain boundaries in tungsten, which is a promising plasma-facing material in nuclear fusion devices. Tensile tests of tungsten bicrystals were conducted inside a field-ion microscope by means of high-field mechanical loading. It is shown that the intergranular helium adsorption induces reduction of the inherent grain-boundary tensile strength.
English 
Spanish 
Chinese 
Russian 
German 
French 
Japanese 
Portuguese 
Hindi