Load Displacement Curves of Hybrid and Non-hybrid Additive Manufactured SS316L Notched Cylindrical Specimens

Description

This load displacement data is a part of the journal article titled "Improving the ductility of additively manufactured stainless steel 316L using an in-situ hybrid additive-subtractive manufacturing approach". This dataset comprises load-displacement curves up to fracture for three additively manufactured (hybrid vs. non-hybrid) notched SS316L steel specimens. The specimens were loaded at a constant crosshead displacement rate of 0.1 mm/min, and two samples were tested for each geometry. A virtual extensometer with a length of 14mm was used to measure displacement in the gage region of all uniaxial tension test specimens using the DIC software VIC3D. The hybrid AM specimens consistently exhibited higher ductility than the corresponding non-hybrid specimens across all notch geometries, with an enhancement ranging from 10.8% to 55.36%. Acknowledgments: These experiments were supported by the National Science Foundation under CAREER Award #2329562. Any opinions, findings, and conclusions or recommendations expressed in this article are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

Steps to reproduce

Printing: The LPBF process parameters are as follows: scanning speed of 700 mm/s, laser power of 320 W, laser spot diameter of 0.2 mm, hatch spacing of 0.12 mm, and layer thickness of 0.05 mm. In the hybrid AM process, the LPBF process was interrupted every 10 layers, and a spindle installed in the printer was used to machine the notch. A T-slot cutter with a 6mm diameter was used at a cutting speed of 594 mm/min and a spindle speed of 2650 rpm to mill the notch in the cylindrical specimens. Hot Isostatic Pressing: the HIP protocol involved heating the specimens at 500 °C/hour to a target temperature of 1150 °C, then holding at that temperature and a target pressure of 1050 bar for 3 hours in an argon atmosphere. Following this, the specimens were cooled inside the furnace at a cooling rate of 600 °C/hour. Mechanical Testing: The specimens were loaded at a constant crosshead displacement rate of 0.1 mm/min, and two samples were tested for each geometry. A virtual extensometer with a length of 14mm was used to measure displacement in the gage region of all uniaxial tension test specimens using the DIC software VIC3D. Note: The dimensions of the specimens are provided in the dataset.

Institutions

• Arizona State University

  Arizona, Tempe

Categories

Funders

• U.S. National Science Foundation

  Government of the United States of America

  Alexandria

  Grant ID: 2329562

Licence