University of Limerick
Browse
Mooney_2019_MSEA_accepted version.pdf (3.33 MB)

Process phenomena influencing the tensile and anisotropic characteristics of additively manufactured maraging steel

Download (3.33 MB)
journal contribution
posted on 2019-01-24, 15:57 authored by Barry Mooney, Kyriakos I. Kourousis, Ramesh Raghavendra, Dylan J. Agius
The tensile mechanical properties and anisotropy levels of identical test-coupons, fabricated from maraging steel 300 (MS300) using two alternative EOS EOSINT M280 Additive Manufacturing (AM) systems, have been examined. The mechanical performance variations resulting from process differences between the two suppliers and the part's build volume orientation (0°, 45°, and 90°) are investigated. Significant microstructural discrepancies, affecting mechanical performance, plasticity and anisotropy levels, have been observed in the as-built samples obtained from the two suppliers. A difference in the angle of the laser scan strategy, in conjunction with unfavourable powder feedstock characteristics, are understood to have had a profound influence on the plasticity and anisotropy divergences observed in the AM MS300 alloy. Plastic anisotropy levels can be largely reduced through application of aging heat-treatments, however, a degree of transverse strain anisotropy is likely to remain due to the AM alloy's fabrication history. Moreover, in this work both the anisotropic and elasticity tensors for this material are derived. These tensors can be used by researchers working on modelling and simulation of the MS300 mechanical properties.

Funding

Using the Cloud to Streamline the Development of Mobile Phone Apps

Innovate UK

Find out more...

History

Publication

Matieral Science and Engineering: A;745, pp. 115-125

Publisher

Elsevier

Note

peer-reviewed

Other Funding information

IRC

Rights

This is the author’s version of a work that was accepted for publication in Materials Science and Engineering: A. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Science and Engineering A. 2019, 745, pp. 115-125, https://doi.org/10.1016/j.msea.2018.12.070

Language

English

Usage metrics

    University of Limerick

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC