Support Thickness, Pitch, and Applied Bias Effects on the Carbide Formation, Surface Roughness, and Material Removal of Additively Manufactured 316 L Stainless Steel
Support Thickness, Pitch, and Applied Bias Effects on the Carbide Formation, Surface Roughness, and Material Removal of Additively Manufactured 316 L Stainless Steel
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支撑厚度、节距和施加的偏置对增材制造 316 L 不锈钢碳化物形成、表面粗糙度和材料去除的影响
DOI：
10.1007/s11837-020-04422-y
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发表时间：
2020
期刊：
影响因子：
2.6
通讯作者：
Hildreth, Owen J.
中科院分区：
文献类型：
--
作者：
Hoffman, Robert;Hinnebusch, Shawn;Raikar, Subbarao;To, Albert C.;Hildreth, Owen J.
自终止蚀刻工艺的进步为选择性激光熔化不锈钢合金带来了可溶解的支持物。初步数据显示，去除的载体材料的量可能大于从本体材料去除的材料的量。本文详细介绍了一个旨在了解这种现象的小型研究。 首先，材料去除和粗糙度作为施加偏压的函数进行了研究。由此，选择了两种不同的电位，400 mVSHE，通过晶间腐蚀去除120 µm，550 mVSHE，通过均匀腐蚀去除39 µm的材料。 接下来，在这两种不同的电位下蚀刻一组壁厚从82 μm到544 μm不等的模拟支撑结构，以报告可以合理去除的厚度范围。
Advances in self-terminating etching processes have brought dissolvable supports to selective laser-melted stainless-steel alloys. Preliminary data showed that the amount of support material removed could be larger than the amount of material removed from the bulk material. This article details a small study aimed at understanding this phenomenon. First, the material removed and roughness as a function of applied bias is studied. From this, two different potentials were selected, 400 mVSHE, which removes 120 µm through intergranular corrosion, and 550 mVSHE, which removes material 39 µm through uniform corrosion. Next, a simulated set of support structures with wall thicknesses varying from 82 µm to 544 µm was etched under these two different potentials to report the range of thicknesses that can be reasonably removed.