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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure and properties of sintered tungsten heavy alloys
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Microstructure and properties of sintered tungsten heavy alloys

机译：烧结钨重合金的组织和性能

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The microstructure and properties of liquid-phase sintered tungsten heavy alloys were studied. The structure and segregation of the impurity elements at the interfacial boundaries were examined using scanning electron microscopy (SEM) andfine-probe energy dispersive spectroscopy (EDS) microanalysis. Test results of mechanical properties are presented and correlated with fracture behavior of the liquid-phase sintered tungsten alloys. It was found that the Fe-Ni-W alloy exhibits superiorproperties as compared with the Cu-Ni-W alloy. The detection of copper was found across tungsten grains and matrix that could be associated with inferior properties of the Cu-Ni-W alloy as compared to the Fe-Ni-W alloy. Although the fracture waspredominantly brittle in both alloys, complex fracture modes seem to be operative due to the composite microstructure of the alloys. Evidence of microsegregation was observed that also contributed primarily to the brittle failure in the alloys. Theimpurity elements, such as sulfur and phosphorus, were detected at the tungsten matrix and tungsten-tungsten particle boundaries.
机译：研究了液相烧结钨重合金的组织和性能。使用扫描电子显微镜（SEM）和细探针能量色散光谱（EDS）显微分析检查了界面处杂质元素的结构和偏析。介绍了力学性能的测试结果，并将其与液相烧结钨合金的断裂行为相关联。发现Fe-Ni-W合金表现出比Cu-Ni-W合金更好的性能。在钨晶粒和基体上发现了铜的检测，与Fe-Ni-W合金相比，这可能与Cu-Ni-W合金的性能较差有关。尽管两种合金的断裂主要是脆性的，但是由于合金的复合微观结构，复杂的断裂模式似乎是可行的。观察到微观偏析的证据也主要是造成合金的脆性破坏。在钨基体和钨-钨粒子边界处检测到杂质元素，例如硫和磷。

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