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Tensile and impact properties of microwave sintered tungsten heavy alloys

机译：微波烧结钨重合金的拉伸和冲击性能

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摘要

The present study investigates the interrelationship between microstructure, tensile and impact properties of microwave sintered tungsten heavy alloys. Alloys of two different compositions were microwave sintered and conventionally liquid phase sintered using similar heating rate, followed by microstructure and mechanical property evaluation. The tensile properties of microwave sintered alloys were significantly superior to those of liquid phase sintered alloys in both the compositions. Excellent impact properties were obtained in microwave sintered alloys, without any subsequent heat treatment or processing. In order to understand the reasons for the improvement, a detailed comparative study of microstructural features in both microwave and conventionally sintered alloys was carried out and it was observed that both tensile and impact properties of these alloys were largely influenced by tungsten-tungsten contiguity; the weakest link in the microstructure. Microwave sintered alloys were found to exhibit substantially lower contiguity as compared to the conventionally sintered alloys and consequently their properties were found to be superior as compared to the conventionally sintered alloys.
机译：本研究研究了微波烧结钨重合金的组织，拉伸性能和冲击性能之间的相互关系。将两种不同组成的合金进行微波烧结，并使用相似的加热速率进行常规液相烧结，然后进行显微组织和力学性能评估。在两种组合物中，微波烧结合金的拉伸性能均显着优于液相烧结合金。在微波烧结合金中无需任何后续热处理或加工即可获得出色的冲击性能。为了理解改进的原因，对微波和常规烧结合金的微观结构特征进行了详细的比较研究，观察到这些合金的拉伸性能和冲击性能都受到钨-钨连续性的影响。微观结构中最薄弱的环节。发现与常规烧结的合金相比，微波烧结合金显示出显着较低的连续性，因此，与常规烧结的合金相比，发现它们的性能优越。

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