The effect of nickel (Ni) on activated sintering of tungsten has been known and investigated for decades. However, there are few reports on the mechanical properties of tungsten when Ni is added as a low alloying additive with less than 1 wt%. In this research, the mechanical behaviors of tungsten doped with 0.2–1.0 wt% nickel from room temperature up to 400 °C were investigated. The results show that the compression ductility of as-sintered Ni doped tungsten is drastically higher than that of as-sintered pure tungsten at all tested temperatures including room temperature, and the fracture toughness at room temperature is increased by 92%. The results suggest that the ductile-to-brittle transition temperature (DBTT) of tungsten can be reduced substantially by doping with Ni.

镍（Ni）对钨的活化烧结的影响是已知的，并且已经研究了数十年。然而，当以小于1wt％的低合金添加剂添加Ni时，关于钨的机械性能的报道很少。在这项研究中，研究了室温至400°C时掺有0.2–1.0 wt％镍的钨的力学行为。结果表明，在包括室温在内的所有测试温度下，烧结的掺Ni钨的压缩延展性明显高于烧结的纯钨，并且室温下的断裂韧性提高了92％。结果表明，通过掺杂镍可以大大降低钨的延性转变为脆性转变温度（DBTT）。