W-Ni-Cu-Sn系高比重合金的研究

INVESTIGATION ON W-Ni-Cu-Sn HEAVY ALLOYS

摘要: 本文研究了烧结温度、保温时间以及添加锡对W-Ni-Cu合金性能的影响。结果表明,不添加锡的93W-Ni-Cu合金与添加1%Sn的85W-Ni-Cu-Sn合金相比,其烧结温度由1320℃降至1140℃,即烧结温度降低约200℃;抗拉强度从686N/mm²提高到980N/mm²;热膨胀系数提高了28%。获得了较好的综合性能。

Abstract: of the tensile strength, density and hardness of 85w-Ni-Cu-Sn alloys with variations of the sintering temperature, that is below the best sintering temperature, the tensile strength, density and hardness increase as the temperature rise; above the best sintering temperature, they reduce slightly. The sintered compact of three above heavy alloys was basically densified after sintering 1 hour.
The tensile strength of W-Ni-Cu-Sn 1% alloy is higher than the others,The strength of alloys decreases obviously as the content of Sn addition increases. The research results showed that 85W-Ni-Cu-Sn 1% alloy compared with 93w-Ni-Cu alloy. The sintering temperature will reduce from 1320℃ to 1140℃, the tensile strength will increase from 686N/mm² to 980N/mm²,and the thermal expansion coefficient will be improved 28%.