Influence of selective laser melting process parameters on densification behavior, surface quality and hardness of 18ni300 steel

Li，Gan1,2; Guo，Cheng2; Guo，Wenfeng1; Lu，Hongxing2; Wen，Linju1; Hu，Xiaogang1; Zhu，Qiang1

10.4028/www.scientific.net/KEM.861.77

2020

1013-9826

1662-9795

KEY ENG MATER

861 KEM

77-82

This study investigated the effect of laser power (P), scan speed (v) and hatch space (h) on densification behavior, surface quality and hardness of 18Ni300 maraging steel fabricated by selective laser melting (SLM). The results indicated that the relative density of the SLMed samples has a shape increase from 73% to 97% with the laser energy density increasing from 0.5 to 2.2 J/mm . The relative density ≥ 99% was achieved at the energy density in the range of 2.2~5.9 J/mm . The optimum process parameters were found to be laser power of 150~200 W, scan speed of 600mm/s and hatch space of 0.105mm. In addition, it was found that the hardness increased initially with the increasing relative density up to relative density of 90% and then little relationship, but finally increase again significantly. This work provides reference for determining process parameters for SLMed maraging steel and the development of 3D printing of die steels.

18Ni300 steel Densification Process parameters Selective laser melting Surface quality

第一 ; 通讯

英语

EI

20203909232660

Hardness ; Maraging steel ; Densification ; Melting ; Selective laser melting ; Hatches

Steel:545.3 ; Reproduction, Copying:745.2 ; Chemical Operations:802.3 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

2-s2.0-85091268253

Scopus

1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China

Li，Gan,Guo，Cheng,Guo，Wenfeng,et al. Influence of selective laser melting process parameters on densification behavior, surface quality and hardness of 18ni300 steel[C],2020:77-82.