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首页> 外文会议>Annual Meeting Exhibition of The Minerals, Metals Materials Society >Solid State Diffusion Bonding of ODS Eurofer Steel by Spark Plasma Sintering
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Solid State Diffusion Bonding of ODS Eurofer Steel by Spark Plasma Sintering

机译：ODS Eurofer钢通过火花等离子烧结的固态扩散粘合

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Oxide dispersion strengthened (ODS) steels are considered to be one of the candidate structural materials for advanced nuclear applications due to their high elevated-temperature strength, corrosion resistance, and radiation tolerance. Joining of ODS steels by traditional fusion joining techniques is not applicable, because the melting process results in the coarsening of fine grains and agglomeration of nano-sized oxide particles, and consequently a significant loss of strength. Spark plasma sintering (SPS) has recently been employed as a novel joining technique, which could be beneficial for joining ODS steels considering the solid state characteristic. A powder metallurgy prepared ODS Eurofer steel was successfully joined using SPS. The microstructure and mechanical properties of the joints were investigated. An almost defect-free joint was obtained at the selected processing condition. The tensile properties of the joints are comparable to the base material. Fracture analysis shows an intergranular fracture in the as-joined sample, while a ductile fracture with well-defined dimples is found in the tempered sample.
机译：增强（ODS）钢的氧化物分散体被认为是由于其高温强度，耐腐蚀性和辐射耐受性而用于先进的核应用的候选结构材料之一。通过传统的融合连接技术加入ODS钢不适用，因为熔化过程导致较粗晶粒和纳米氧化物颗粒的聚集的腐蚀，因此显着的强度损失。最近被用作一种新颖的加入技术的火花血浆烧结（SPS），这对于考虑固态特征的加入ODS钢可以是有益的。使用SPS成功加入粉末冶金制备的ODS Eurofer Steel。研究了关节的微观结构和机械性能。在所选加工条件下获得了几乎无缺陷的关节。关节的拉伸性质与基材相当。裂缝分析显示了在浇口样品中的晶间骨折，而在回火样品中发现具有明确定义的凹坑的延性裂缝。

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