The hardness of additively manufactured alloys

J. S. Zuback, T. DebRoy

Research output: Contribution to journalReview article

21 Scopus citations

Abstract

The rapidly evolving field of additive manufacturing requires a periodic assessment of the progress made in understanding the properties of metallic components. Although extensive research has been undertaken by many investigators, the data on properties such as hardness from individual publications are often fragmented. When these published data are critically reviewed, several important insights that cannot be obtained from individual papers become apparent. We examine the role of cooling rate, microstructure, alloy composition and post process heat treatment on the hardness of additively manufactured aluminum, nickel, titanium and iron base components. Hardness data for steels and aluminum alloys processed by additive manufacturing and welding are compared to understand the relative roles of manufacturing processes. Furthermore, the findings are useful to determine if a target hardness is easily attainable either by adjusting AM process variables or through appropriate alloy selection.

Original languageEnglish (US)
Article number2070
JournalMaterials
Volume11
Issue number11
DOIs
StatePublished - Oct 23 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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