Fabrication of functionally graded 316L austenitic and 2205 duplex stainless steels by spark plasma sintering
Fabrication of functionally graded 316L austenitic and 2205 duplex stainless steels by spark plasma sintering
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DOI：
10.1016/j.jallcom.2020.156697
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发表时间：
2020-12
影响因子：
6.2
通讯作者：
Babatunde Abiodun Obadele;O. Adesina;O. Oladijo;E. Ogunmuyiwa
中科院分区：
文献类型：
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作者：
Babatunde Abiodun Obadele;O. Adesina;O. Oladijo;E. Ogunmuyiwa
放电等离子烧结（SPS）是一种用于固结金属/陶瓷粉末的放电烧结技术。该技术还可用于连接不同的材料并构建功能梯度材料。在这项研究中，使用放电等离子烧结来制造两种不同的不锈钢粉末； 316 L 奥氏体 (ASS) 和 2205 双相不锈钢 (DSS)。对影响烧结过程的参数如烧结温度、加热时间和压力进行了研究。结果表明，不同的烧结工艺影响烧结样品的烧结相对密度、硬度和显微结构。此外，SPS 工艺后烧结材料的结构非常致密。相对密度随着烧结温度的升高而增大。界面处的显微硬度值无关紧要，界面处没有可见的裂纹或分层。
Spark plasma sintering (SPS) is a type of electric discharge sintering technique used to consolidate metallic/ceramic powders. This technique could also be used to join dissimilar materials and build functionally graded materials. In this study, spark plasma sintering was used to fabricate two different stainless steel powders; 316 L austenitic (ASS) and 2205 duplex stainless steels (DSS). The parameters that influence the sintering process such as sintering temperature, heating time and pressure have been investigated. Results show that different sintering processes influenced the sintered relative density, hardness and microstructure of the sintered samples. Also, the structure of the sintered materials was well densified after the SPS process. The relative density increased with the increment of sintering temperature. Microhardness values at the interface were indifferent with no visible cracks or delamination at the interface.