%0 Journal Article
%T Strong and ductile reduced activation ferritic/martensitic steel additively manufactured by selective laser melting
%A C. S. Lao
%A C. Y. Liu
%A G. Xu
%A H. B. Liao
%A J. D. Tong
%A M. G. Jiang
%A M. Xu
%A P. Wang
%A X. Y. Wang
%A Z. W. Chen
%J Materials Research Letters
%D 2019
%R https://doi.org/10.1080/21663831.2019.1631224
%X ABSTRACT Selective laser melting (SLM) was successfully applied to fabricate strong and ductile reduced activation ferritic/martensitic (RAFM) steel by introducing heterogeneous multi-/bimodal microstructure. The SLM-built RAFM steel exhibited an excellent combination of strength and ductility (i.e. yield strength of 1053£¿¡À£¿4.7£¿MPa and elongation of 16.9£¿¡À£¿0.4%), well surpassing the previously reported counterparts. The superior strength was expected from the refined grains and lath martensites, and the high ductility was associated with the improved dislocation-controlled strain hardening capability. This work provides a basis for developing high-performance RAFM steel by microstructural design via SLM. GRAPHICAL ABSTRACT IMPACT STATEMENT A new strategy, refers to heterogeneous multi-/bimodal microstructure, is proposed to develop strong and ductile RAFM steel via SLM and the achieved superior mechanical properties overcome the classic strength-ductility trade-off
%U https://www.tandfonline.com/doi/full/10.1080/21663831.2019.1631224