Effect of Rapid Heating and Cooling Conditions on Microstructure Formation in Powder Bed Fusion of Al-Si Hypoeutectic Alloy: A Phase-Field Study

• Published in: Materials Vol. 15; no. 17; p. 6092
• Main Authors: Okugawa, Masayuki, Furushiro, Yuya, Koizumi, Yuichiro
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 02.09.2022; MDPI
• Subjects: Alloys; Aluminum base alloys; Grain refinement; Grain size; Heating rate; Interfaces; Mechanical properties; Melting; Microstructure; Nucleation; Powder beds; Powders; Silicon; Simulation; Solidification; Solids; Specialty metals industry

Al alloy parts fabricated by powder bed fusion (PBF) have attracted much attention because of the degrees of freedom in both shapes and mechanical properties. We previously reported that the Si regions in Al-Si alloy that remain after the rapid remelting process in PBF act as intrinsic heterogeneous...