定向能沉积技术对 K340 冷作工具钢的可加工性

MS Kenevisi, PA Martelli, FS Gobber, D Ugues, S Biamino
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引用次数: 0

摘要

定向能沉积(DED)是一种增材制造工艺,可用于修复缺陷部件,如 K340 工具钢制成的冲裁模。在这项工作中,使用定向能沉积工艺沉积了 K340 钢的双轨道,以研究该合金的可加工性,并通过光学显微镜(LOM)、扫描电子显微镜(SEM)和显微硬度测试对轨道进行了表征。结果表明,可以形成接近全致密的沉积。然而,该工艺施加的热循环改变了材料的微观结构。要想获得更均匀的微观结构,还需要进一步研究。
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Processability of K340 Cold Work Tool Steel by Directed Energy Deposition Technique
Directed Energy Deposition (DED) is an additive manufacturing process which can be used to repair defected components, such as blanking dies made of K340 tool steel. In this work, double tracks of K340 steel were deposited using DED process to study the processability of the alloy, and the tracks were characterized by light optical microscopy (LOM), scanning electron microscopy (SEM) and microhardness test. The results showed that near full-dense deposits can be made. However, the thermal cycle imposed by the process alters the microstructure of the material. Further investigation is required to make it possible to achieve a more homogeneous microstructure.
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