چکیده مقاله
Selective Laser Melting SLM is an Additive Manufacturing AM technique used to process Ti6Al4V in medicine, aerospace and other industries In this research, a finite element model using ANSYS software has been used to investigate residual stresses in laser melting of Ti6Al4V powders Initially, a thermal model was developed to calculate the temperature distribution Then the temperature field results were used for stress field analysis and prediction of residual stresses, deformation due to fabrication Using a numerical model, the effect of a number of process variables on residual stresses in the printed layer was investigated In this study, two speeds of 800 and 1200 mm/s and a thickness of 0 5 and 1 mm have been used for the build platform Also, for the printedlayer, two thicknesses of 30 and 15 micrometers are considered The results showed that with increasing the scanning speed, the longitudinal residual stress increased by 40 MPa and by decreasing the thickness of the printed layer from 30 to 15 μm, the amount of residual stress increased from 130 to 233 MPa By reducing the thickness of the build platform from 1 to 0 5 mm, the residual stress decreases to 100 MPa, and by changing the material of the platform from steel to titanium alloy, the longitudinal residual stress in the printed layer increases by 30 MPa
کلیدواژهها
نویسندگان
Saeed Cheraghsahar Kiasaraee
Department of Materials and Metallurgical Engineering, Amirkabir University of Technology AUT
Islam Ranjbar Nodeh
Department of Materials and Metallurgical Engineering, Amirkabir University of Technology AUT
Seyed Ehsan Mirsalehi
Department of Materials and Metallurgical Engineering, Amirkabir University of Technology AUT
شیوه ارجاع
Cheraghsahar Kiasaraee, Saeed and Ranjbar Nodeh, Islam and Mirsalehi, Seyed Ehsan,1400,Analysis and study of distortion and residual stresses in the layer produced from Ti6Al4V alloy by selective laser melting method,4th International Conference on Welding and Non Destructive Testing & 22nd National Conference on Welding & Inspection & 11th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات چهارمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب و بیست و دومین کنفرانس ملی جوش و بازرسی و یازدهمین کنفرانس ملی آزمایش های غیرمخرب18 اسفند 1400 · اصفهان