|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||Application of a Solidification Cracking Criterion to Al-Mg Alloys at Rapid Cooling Rates
||Lakshmi Ravi Narayan, Rainer J. Hebert
|On-Site Speaker (Planned)
||Lakshmi Ravi Narayan
Binary Al-Mg alloys have been used to evaluate the applicability of a criterion to predict solidification cracking by Kou to additive manufacturing (AM). The criterion uses the slope of the fraction of solid curves as a function of temperature to predict solidification cracking. In this work, the fraction of solid curves as a function of temperature at a range of cooling rates between 10 and 40000 Ks-1 for these alloys have been experimentally determined using fast-scanning calorimetry. These binary alloys were also metallographically examined upon laser-glazing and compared with the slopes of the fraction of solid curves. This work discusses how solidification models and criteria proposed for conventional casting and welding may be extended to AM, especially with respect to the rapid cooling rates.