Difficulties with joining oxide dispersion-strengthened (ODS) steels using classical welding processes have led to the development of alternative joining techniques such as spark plasma sintering (SPS). SPS, which is classically employed for performing sintering, may also be used to join relatively large components due to the simultaneous application of electrical pulsed current and uniaxial charge. SPS technology was tested by joining two ODS steel disks. The preliminary tests showed that it is necessary to control surface roughness before joining. Furthermore, the use of ground and lapped surfaces seemed to improve the quality of the interface. Tensile tests on two ODS cylinders joined using SPS were performed at 750 °C without any additives. Failure occurred away from the interface with a total elongation close to 50% and an ultimate stress of 110 MPa.

中文翻译：

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火花等离子烧结连接氧化物弥散强化钢

使用经典的焊接工艺来连接氧化物弥散强化（ODS）钢的困难导致了替代连接技术的发展，例如火花等离子烧结（SPS）。由于同时施加脉冲电流和单轴电荷，通常用于执行烧结的SPS也可用于连接相对较大的组件。通过连接两个ODS钢盘对SPS技术进行了测试。初步测试表明，在连接之前必须控制表面粗糙度。此外，使用地面和研磨表面似乎可以改善界面质量。在不使用任何添加剂的情况下，在750°C下对使用SPS连接的两个ODS气瓶进行拉伸测试。