Influence law of 3D printing sintering process parameters on mechanical properties of 17-4PH granular material metal
Compared with laser and e-beam based additive manufacturing technologies,the combined 3D print-ing and sintering process is cheaper,but the exploration of the process parameters in the sintering stage is not comprehensive and in-depth enough.Therefore,the experiment uses screw-based 3D printing technology to prepare 17-4PH stainless steel samples,to explore the influence law of sintering process parameters(sintering temperature,heating rate and holding time)on the properties of 17-4PH stainless steel,including porosity and tensile property measurements,and to investigate the influence law of the sintering process parameters on the pore structure,microstructure and fracture morphology.The changes in the mechanical properties of the sin-tered samples were elaborated through the changes in the pore structure,microstructure and fracture morpholo-gy.The results show that the mechanical properties of the sintered samples are best when the sintered samples are heated up to 1 360 ℃ for 1 h at a rate of 4 ℃/min,with a yield strength of 518 MPa and a tensile strength of 693 MPa.
17-4PH stainless steelhigh-temperature sinteringmechanical propertymetal 3D printingdebinding
NETL
NSTL
万方数据
