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研究了钨质量分数为90%的高Ni/Fe比W-Ni-Fe系重合金在不同工艺参数(烧结温度、 烧结时间等)下的烧结行为.研究结果表明:在相同烧结条件下,随粘结相中NiNe比增加钨合 金烧结密度增加,致密化速率提高,同时烧结过程中W晶粒生长速率增大:当Ni/Fe比较低时, 钨合金在循环烧结条件下难以实现完全致密化;但对高Ni/Fe比钨合金,循环烧结不仅可以获 得比等温烧结更高的烧结密度,而且还可以有效地控制烧结过程中W晶粒的长大,获得细晶 钨合金.
The sintering behavior of W / Ni-Fe heavy alloy with high Ni / Fe content of 90% at different process parameters (sintering temperature, sintering time and so on) was studied. The results show that with the increase of NiNe ratio, the sintering density of tungsten alloy increases, the densification rate increases and the grain growth rate increases during sintering under the same sintering conditions. When the Ni / Fe ratio is relatively low, the tungsten However, for the high Ni / Fe ratio tungsten alloy, the cycle sintering can not only obtain higher sintering density than the isothermal sintering, but also effectively control the length of the W grain during sintering Large, access to fine grained tungsten alloy.