Chaolin Tan, Youxiang Chew
Additive manufacturing (AM) enables the processing of heterogeneous materials with customised architectures to improve strength-ductility synergy. Herein, layerwise-heterostructured high-strength steels were processed by AM of two steel powders following the designed architectures. The fabricated high-strength steels with hierarchical heterogeneous characteristics at the layer, melt-pool and grain scales, exhibit good strength-ductility combination, reaching a strength of 1.32 GPa together with an elongation of 7.5%. The increased strength attributes to hetero-deformation induced strengthening. In-situ deformation monitoring reveals many unique deformation bands in heterostructure materials, which delays necking and improves ductility. The findings demonstrate a novel potential approach to circumvent material property trade-offs.
@article{4bd15b07-8161-436c-b8db-9037c19870ce,
title={Additive manufacturing of multi-scale heterostructured high-strength steels},
author={Chaolin Tan and Youxiang Chew},
year={2021},
language={en}
}TY - JOUR TI - Additive manufacturing of multi-scale heterostructured high-strength steels AU - Chaolin Tan AU - Youxiang Chew PY - 2021 LA - en ER -
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