RT Journal Article
T1 Hardness, grainsize and porosity formation prediction on the Laser Metal Deposition of AISI 304 stainless steel
A1 Arrizubieta, Jon Iñaki
A1 Lamikiz, Aitzol
A1 Cortina, Magdalena
A1 Ukar, Eneko
A1 Alberdi, Amaia
AB The presented numerical model solves the heat and mass transfer equations in the Laser Metal Deposition process and based on the evolution of the thermal field predicts the grainsize, the resulting hardness and evaluates the pores formation probability in an AISI 304 stainless steel. For this purpose, in a first step, the model calculates the shape of the deposited material and the variations of the temperature field. In a second step, and based on the evolution of the thermal field, the model calculates the resulting hardness of the deposited material, the grainsize and the porosity formation probability after the deposition process. Numerical results are experimentally validated, and good agreement is obtained. Consequently, besides predicting the geometry of the resulting part and the evolution of the thermal field, the developed model enables to evaluate the quality of the deposited material. Therefore, the optimum process conditions and strategy when depositing AISI 304 stainless steel can be determined without initial trial-and-error tests.
SN 0890-6955
YR 2018
FD 2018-12
LA eng
NO Arrizubieta , J I , Lamikiz , A , Cortina , M , Ukar , E & Alberdi , A 2018 , ' Hardness, grainsize and porosity formation prediction on the Laser Metal Deposition of AISI 304 stainless steel ' , International Journal of Machine Tools and Manufacture , vol. 135 , pp. 53-64 . https://doi.org/10.1016/j.ijmachtools.2018.08.004
NO Publisher Copyright: © 2018 The Authors
DS TECNALIA Publications
RD 1 jul 2024