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首页> 外文期刊>Journal of Materials Engineering and Performance >316L Stainless Steel with Gradient Porosity Fabricated by Selective Laser Melting
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316L Stainless Steel with Gradient Porosity Fabricated by Selective Laser Melting

机译：选择性激光熔化制备的316L梯度孔隙不锈钢

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摘要

To fabricate 316L stainless steel part with a pore gradient structure, the method using selective laser melting (SLM) technique is exploited. Scan tracks feature, densification, and tensile property of SLM-produced samples prepared via different scan speeds were investigated. The results show that the porosity is strongly influenced by scan speed. On this basis, a gradient changed scan speed was applied in every SLM layer for the purpose of producing a gradient porosity metal. The results indicate that the structure exhibits a gradually increased porosity and a reduced molten pool size along the gradient direction of scan speed variation. The forming mechanisms for the gradient porosity were also addressed.
机译：为了制造具有孔梯度结构的316L不锈钢零件，采用了使用选择性激光熔化（SLM）技术的方法。研究了通过不同扫描速度制备的SLM样品的扫描轨迹特征，致密化和拉伸性能。结果表明，孔隙率受扫描速度的强烈影响。在此基础上，将梯度变化的扫描速度应用于每个SLM层中，以生产梯度孔隙金属。结果表明，该结构沿扫描速度变化的梯度方向显示出逐渐增加的孔隙率和减小的熔池尺寸。还讨论了梯度孔隙的形成机理。

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