Fig. 1. SEM morphologies of raw powders and mixed powder after ball-milling. (a) S136 powder; (b) TiB2 powder; (c) mixed powder after ball-milling; (d) surface high magnification morphology of mixed powder

Fig. 2. (a) SLM equipment; (b) processed samples

Fig. 3. XRD patterns and diffraction peaks of SLM-processed specimens at different η. (a) XRD patterns; (b) diffraction peaks

Fig. 4. Typical YZ surface morphologies of SLM-processed specimens at different η. (a) η=38.9 J/mm3; (b) η=46.7 J/mm3; (c) η=66.7 J/mm3; (d) η=103.7 J/mm3

Fig. 5. Densities of SLM-processed specimens at different η

Fig. 6. XY surface microstructures of SLM-processed specimens at different η. (a) η=38.9 J/mm3; (b) η=46.7 J/mm3; (c) η=66.7 J/mm3; (d) η=103.7 J/mm3

Fig. 7. XY surface microstructures (high resolution) of SLM-processed specimens at different η and EDS elemental composition analysis. (a) Microstructure at η=38.9 J/mm3; (b) microstructure at η=46.7 J/mm3; (c) microstructure at η=66.7 J/mm3; (d) microstructure at η=103.7 J/mm3; (e) EDS elemental composition analysis at grain boundary; (f) EDS elemental composition analysis of matrix

Fig. 8. TEM morphology of SLM-processed specimen at η=66.7 J/mm3

Fig. 9. Vickers microhardness of SLM-processed specimens at different η

Fig. 10. Wear surface micro-morphologies of SLM-processed specimens at different η. (a) η=38.9 J/mm3; (b) η=46.7 J/mm3; (c) η=66.7 J/mm3; (d) η=103.7 J/mm3

Fig. 11. Tensile properties of SLM-processed specimens at different η. (a) Stress-strain curve; (b) tensile strength and elongation

Fig. 12. Tensile fracture morphologies of SLM-processed specimens at different η. (a)-(d) η=66.7 J/mm3; (e)-(h) η=38.9 J/mm3