Ultrasound method for determination of porosity in Laser Additive-Manufactured Titanium alloy

Abstract

Metal additive manufacturing are developing faster and faster, gaining in popularity, although they involve technological processes with variable parameters giving the performance and quality of the product. Metal laser powder bed fusion (L-PBF) are frequently used in the producing of Ti-6Al-4V parts for aerospace, electronics, biomedical, automotive applications, benefiting from the 3D design technology that ensures a broad vision of the appearance and structure of the final product. The paper presents the possibility of evaluating the integrity of AM parts from the analysis of C-scan ultrasonic images in amplitude or time of flight and the correlation of the results with those obtained by optical microscopy and metallography. The methods allow emphasizing distribution of flaws as pores or voids in the volume, the detailing the flaws and location ensures the possibility of management review.