Microstructure and mechanical properties of 316L austenitic …
2020年7月9日 · In this work, we examined the influence of different types of selective laser melting (SLM) devices on the microstructure and the associated material properties of austenitic 316L stainless steel. Specimens were built using powder from the same powder batch on four different SLM machines.
Deformation mechanisms of selective laser melted 316L austenitic ...
2022年5月23日 · SLM 316L has higher strength (YS 568 MPa and UTS 693 MPa) and lower ductility (elongation 52%) compared with traditional 316L. The yield strength of SLM 316L is 1.9 times of traditional 316L while the elongation meets the ASTM standard 35% for wrought 316L.
Tuning strength-ductility combination on selective laser melted 316L …
2021年12月1日 · We report a strategy of gradient heterogeneous structure (GHS) architecture to achieve a superior strength-ductility combination in additively manufactured (AM) 316L stainless steel prepared by selective laser melting (SLM) and ultrasonic severe surface rolling (USSR).
Selective laser melting of stainless steel 316L with low porosity …
2016年8月15日 · The present study employs fast scanning speeds to fabricate high-density stainless steel 316L (SS316L) parts via selective laser melting (SLM). It aims to improve the production rate while maintaining a low porosity for the SLM-built parts.
A comprehensive study on microstructure and tensile behaviour …
2018年5月17日 · In this study, SLM with a pulsed laser mode is used to produce 316L stainless steel samples for an investigation on chemical distribution from macroscopic level down to nanometer level with the...
Selective laser melting (SLM) of AISI 316L—impact of laser
2020年5月28日 · In selective laser melting (SLM) the variation of process parameters significantly impacts the resulting workpiece characteristics. In this study, AISI 316L was manufactured by SLM with varying laser power, layer thickness, and hatch spacing.
Selective laser melting processing of 316L stainless steel
2019年7月19日 · SLM-processed 316L stainless steel exhibits promoted mechanical and corrosion performances, compared with the conventionally manufactured counterparts, and has been successfully applied in many fields.
工艺参数对 SLM 制造的 SS316L 显微组织和硬度 ... - X-MOL
2018年4月1日 · 在这项研究中，研究了使用 SLM 制造的不锈钢 (SS) 316L 零件的孔隙率水平与工艺参数对微观结构和材料硬度的影响之间的关系。 研究的材料是在 50-80 J/mm3 的能量密度范围内制造的，并且已经使用各种表征技术进行了研究。 目前的研究证实了能量密度与孔隙率和硬度之间的密切关系，它是控制孔隙率和提高材料密度的最有影响力的变量。 在 50 到 80 J/mm3 的能量密度范围内，孔隙率几乎呈指数下降，硬度随着能量密度的增加呈线性增加。 结果与文献中 …
热处理温度对SLM成形316L不锈钢组织性能影响研究
摘要: 使用选区激光熔化 (SLM)技术制备316L不锈钢试样以及残余应力样件，采用光学显微镜、扫描电子显微镜（SEM，配备电子背散射衍射探头EBSD）、显微硬度计等研究不同热处理工艺对SLM成形316L的显微组织、显微硬度、力学性能以及残余应力的影响，得到最优热处理工艺。 结果表明SLM制备制件组织致密，在最优热处理1 000 ℃、保温2...
Mechanical behavior of selective laser melted 316L stainless …
2017年6月1日 · The tensile, fracture, and fatigue crack growth properties of 316L stainless steel (SS) produced using the selective laser melting (SLM) technique were evaluated and compared with those of conventionally manufactured (CM) austenitic SSs.