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Nano/ultrafine grained immiscible Fe-Cu alloy with ultrahigh strength produced by selective laser melting by Zafari, A. (author);Xia, K. (author) is a scholarly article available to read on EtoBox.

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A nano/ultrafine grained immiscible Fe-Cu alloy was produced using selective laser melting (SLM) with an average grain size of 250 nm and many 50-100 nm, the finest ever achieved using additive manufacturing (AM). The substantial grain refinement was attributed to liquid separation, monotectic reaction and solid-state phase transformations upon cyclic heating. Cu particles of ∼ 5 nm in size and ∼ 10 nm in spacing were contained in some grains, resulting in dispersion strengthening which, together with grain boundary strengthening, led to a significant increase in the yield strength from ∼ 400 MPa in an SLM-fabricated Fe to ∼ 900 MPa in Fe-Cu. ## IMPACT STATEMENT Nano/ultrafine Fe grains containing Cu particles of 5 nm in size and 10 nm in spacing were achieved by SLM of Fe-Cu, resulting in an ultrahigh strength material.

Author

Zafari, A. (author);Xia, K. (author)

Publisher

Informa UK Limited

Published

2021

Language

EN