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提出了一个钨合金的组织结构模型,在一定的假设条件下用有限元方法和计算机数值模拟研究了钨合金力学性能和钨含量的关系。结果表明;随钨含量增加,合金屈服强度提高,但弹性变形量和延伸率均降低。当钨含量<85%(质量分数,下同)时,合金抗拉强度随钨含量增加而增加;当钨含量>85%时,合金抗拉强度随钨含量增加而降低,在钨含量为85%附近达到最大值。在低钨含量合金中(<90%),高应力主要集中在钨颗粒中,随钨含量增加,粘结相中应力水平降低;在高钨含量合金中钨颗粒和粘结相中应力水平基本相同,随钨含量增加,粘结相中应力水平增加。
A model of the structure of tungsten alloy was proposed. Under some assumptions, the relationship between the mechanical properties of tungsten alloy and tungsten content was studied by finite element method and computer numerical simulation. The results show that with the increase of tungsten content, the yield strength of the alloy increases, but the amount of elastic deformation and elongation decrease. When the content of tungsten is less than 85% (mass fraction), the tensile strength of the alloy increases with the increase of tungsten content. When the content of tungsten is more than 85%, the tensile strength of the alloy decreases with the increase of tungsten content. The maximum is around%. In the low tungsten content alloys (<90%), the high stress is mainly concentrated in the tungsten particles, with the increase of the tungsten content, the stress level in the binder phase decreases. In the high tungsten content alloy, the stress levels in the tungsten particles and the binder phase are basically Similarly, as the tungsten content increases, the stress level in the binder phase increases.