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Interface Observation of Iron Based Metallic Glassy Powder In Pressurized Liquid Phase Sintered Compaction

机译:铁基金属玻璃粉末在加压液相烧结压实中的界面观察

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To consolidate [(Fe_(0.5)Co_(0.5))_(0.75)Si_(0.05)B_(0.2)]_(96)Nb_4 metallic glassy powder to full density, a pressurized liquid phasesintering was employed, which was intended to promote a viscous flow deformation of solid particles and alsoto enhance the intergranular permeation of the liquid phase. Al-32.5wt.%Cu was chosen as a liquid phasecomponent having low melting point. The mixed powders were sintered by induction heating furnace withheating rate of 200 K/min and applying pressure of 400 Mpa for maintaining the amorphous phase. SEM andTEM observations shows the interfacial reaction layers were formed between metallic glassy phase and liquidphase. While this layer can contribute for to reinforce the fracture strength, the layer interferes withdeformation of metallic glassy powders and also interferes with squeezing of liquid phase. This study reportthe interfacial microstructure between the powder particles by TEM observations.
机译:巩固[(Fe_(0.5)CO_(0.5))_(0.75)Si_(0.05)B_(0.2)] _(96)Nb_4金属玻璃粉末至全密度,加压液相 采用烧结,旨在促进固体颗粒的粘性流动变形 增强液相的晶间渗透。 Al-32.5wt。选择%Cu作为液相 具有低熔点的组分。通过感应加热炉烧结混合粉末 加热速率为200 k / min,施加400mPa的压力,用于维持非晶相。 SEM和 TEM观察结果显示界面反应层在金属玻璃相和液体之间形成 阶段。虽然该层可以有助于增强裂缝强度,但该层干扰了 金属玻璃粉末的变形并干扰液相挤压。这项研究报告了 TEM观察粉末颗粒之间的界面微观结构。

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