Journal Published Online: 12 February 2021
Volume 49, Issue 6

A Survey of Mechanical Property Variability of Additively Manufactured Metals

CODEN: JTEVAB

Abstract

Metal additive manufacturing (AM) processes, such as laser powder bed fusion, allow for the realization of parts with features and characteristics that cannot be achieved with traditional material removal manufacturing technologies. Despite impressive applications of metal AM parts in demanding aerospace applications, there remain concerns about the variability in mechanical properties of parts made with these processes. This variability leads to concerns by program managers and other decision-makers and a reluctance to potentially use metal AM parts in applications where they would otherwise be beneficial. Some of this reluctance might be assuaged if the actual property variability was better known. Here, we examine the literature of metal AM tensile property data to quantify variability in the metal AM process and compare it to the variability found in traditionally fabricated metals. It is shown that the variability in tensile material properties is somewhat similar between AM metals and conventional metals.

Author Information

Slotwinski, John
National Security Analysis Department, The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
Martin, Christine
National Security Analysis Department, The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
Johnson, Terrence
Air and Missile Defense Sector, The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
Pages: 8
Price: $25.00
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Details
Stock #: JTE20200461
ISSN: 0090-3973
DOI: 10.1520/JTE20200461