Effect of oxygen contamination on the tensile properties of T-111 (tantalum-8tungsten-2hafnium) at 1204 °C

Thermodynamic study of the MWG system/components and measurement of the oxygen partial pressure in the heat source capsule

“…In the latter case a coherent precipitate results, and in either of the two cases the net result is one that strengthens the material [5][6][7][8]. However, this strengthening process results in loss of ductility and increase in hardness (embrittlement) even when exposed to only the parts-permillion range of oxygen and, therefore, an overall loss in the desirable physical and mechanical properties [9][10][11][12].…”