不锈钢合金的直接金属激光烧结:显微组织和力学性能

The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019) Pub Date : 2019-12-03 DOI:10.3846/mbmst.2019.201

G. Mordas, Ada Steponavičiūtė, A. Selskienė, J. Tretjakovas, S. Borodinas

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引用次数: 0

摘要

增材制造(AM)是一种制造技术，通过将材料逐层添加以产生3D物体。生产的3D零件应用于航天、航空、汽车、建筑等行业领域，具有良好的未来前景。目前，商业上有希望的金属制造技术是直接金属激光烧结(DMLS)。我们的研究重点是用DMLS研究生产的17- 4h(不锈钢)零件的力学性能。确定了DMLS工艺参数(激光功率、扫描速度和能量密度)对材料极限强度、屈服强度和杨氏模量的影响。我们展示了微观结构的演变。对检测到的缺陷进行分类。这项研究可以确定SS 17-4H的DMLS的最佳制度，并描述所生产零件的机械性能，并有助于展示DMLS发展的未来可能性。

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Direct Metal Laser Sintering of stainless steel alloy: microstructure and mechanical properties

Additive manufacturing (AM) is a type of manufacturing technologies whereby the material is added a layer upon layer to produce a 3D object. Produced 3D parts are applied in such industry sectors as space, aviation, automotive, building and has excellent future promises. Ourdays, the commercialy promised technique for metal manufacturing is Direct Metal Laser Sintering (DMLS). Our study concentrated on the investigation of the mechanical properties of produced17-4H (stainless steel) parts using DMLS. The effect of the DMLS process parameters (laser power, scanning speed and energy density) on the ultimate strength, yield strength and Young’s modulus was determined. We showed an evolution of the microstructure. The detected defects were classified. This study allowed to determine the optimal regimes of DMLS for SS 17-4H and describe mechanical properties of the produced parts as well as helped to show future possibilities of DMLS development.

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The proceedings of the 13th international conference "Modern Building Materials, Structures and Techniques" (MBMST 2019)

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