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首页> 外文期刊>Journal of Materials Engineering and Performance >Tensile Properties of Built and Rebuilt/Repaired Specimens of 316L Stainless Steel Using Directed Energy Deposition
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Tensile Properties of Built and Rebuilt/Repaired Specimens of 316L Stainless Steel Using Directed Energy Deposition

机译：使用定向能量沉积的316L不锈钢的建筑和重建/修复标本的拉伸性能

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摘要

One of the most exciting possibilities brought forward by some additive manufacturing (AM) processes is their ability to deposit materials on existing parts. Mainly achievable with directed energy deposition systems, it is thus possible to repair worn or broken components. Two applications were studied in this research: (1) complete construction and (2) repair of tensile specimens made of 316L-Si stainless steel. The latter series was produced by adding material on existing half specimens made of wrought 316L stainless steel. All specimens were built along the Z-axis. Tensile specimens machined from wrought were also tested for comparison purposes. Three conditions were tested for each series of AM specimens: as-built, stress relieved and HIPed. The results show that yield strength, ultimate tensile strength (UTS) and elongation are higher than the typical tensile properties reported for annealed 316L. Repairs show excellent bond resistance with the wrought material and good mechanical properties with a mean UTS of 647 MPa in the as-built condition.
机译：一些添加剂制造业（AM）流程提出的最令人兴奋的可能性之一是他们将材料存放在现有部位的能力。主要是通过定向能量沉积系统实现的，因此可以修复磨损或破损的部件。本研究研究了两种应用：（1）完整的施工和（2）修复316L-Si不锈钢制成的拉伸试样。后者系列是通过在现有的半标本上添加材料制造的，由锻造316L不锈钢制成。所有标本沿Z轴构建。还测试了从锻造加工的拉伸标本进行比较目的。对AM标本的每个系列进行测试三种条件：构建，压力缓解和升高。结果表明，屈服强度，极限拉伸强度（UTS）和伸长率高于退火316L的典型拉伸性能。维修表现出优异的粘接材料和良好的机械性能，具有647 MPa的平均值在竣工条件下。

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