Effect of surface cleaning on interface bonding performance for 316H stainless steel joints manufactured by additive forging
Effect of surface cleaning on interface bonding performance for 316H stainless steel joints manufactured by additive forging
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DOI：
10.1016/j.matdes.2021.110025
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发表时间：
2021-11
影响因子：
8.4
通讯作者：
Yong Zhao;Zhuji Jin;Bin-shi Xu;Q. Wang;J. Feng;Xiuru Li;R. Kang;Zhaocheng Wei;Jiang Guo
中科院分区：
文献类型：
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作者：
Yong Zhao;Zhuji Jin;Bin-shi Xu;Q. Wang;J. Feng;Xiuru Li;R. Kang;Zhaocheng Wei;Jiang Guo
相加锻造是近年来发展起来的一种采用多层热压连接制造大型锻件的新方法。然而，在加法锻造过程中，粘结试件的表面清洁与粘结性能之间的关系尚不清楚。本文首次研究了表面清洗对界面结合性能的影响。提出了一种新的表面清洁度表征方法，该方法由水接触角、相对荧光单位和光学观察值组成，用于表征清洗效果。用微观形态和拉伸性能评价了界面结合性能。通过元素分析和形态分析，推测了污染物的阻隔机理。结果表明，新的表征方法能够有效地表征基板表面的清洁度。此外，界面结合性能结果表明，表面清洁对相加锻造316H不锈钢接头的结合性能有很大影响。最后，颗粒、切屑和油类污染物的阻挡机理分别归因于径向、沿界面和垂直于界面方向的阻挡作用。这项研究建立了表面清洁和粘接性能之间的关系，有助于实现大型锻件的高性能制造。
Additive forging is a newly developed method to manufacture heavy forgings by using multilayer hot-compression bonding. However, the relationship between surface cleaning and bonding performance of bonded samples in the additive forging process is unclear. This paper studies the effect of surface cleaning on interface bonding performance for the first time. A new characterization method of surface cleanliness consisting of water contact angles, relative fluorescence units, and optical observation was proposed to characterize the cleaning effect. The micromorphologies and tensile properties were used to evaluate interface bonding performance. Elemental analysis and morphological analysis were used to infer the hindrance mechanism of contaminants. The results show that the new characterization method can effectively characterize the surface cleanliness of substrates. Moreover, the interfacial bonding performance results indicate that surface cleaning had a great influence on the bonding performance for 316H stainless steel joints manufactured by additive forging. Finally, the hindrance mechanisms of particles, chips, and oil contaminants were attributed to the hindrance effect in a radial direction, along the interface direction, and perpendicular to the interface direction respectively. This research builds a relationship between surface cleaning and bonding performance, which helps achieve high-performance manufacturing of heavy forgings.