Mechanical field control in electron beam powder bed fusion: Dual effect of heat accumulation and melting strategies based on equivalent infinite cooling time interval
Abstract
Mechanical field control in powder bed fusion is critical in mitigating distortion and cracking by reducing residual stresses, and enhancing mechanical properties by regulating dislocation structures. However, achieving these while preserving optimal melt region dimensions for desired build quality and microstructures remains challenging due to the inherent positive correlations among input energy, melt region and heat-affected zone (HAZ) dimensions, and residual stresses and strains. This study establishes a framework for effectively manipulating residual stresses and strains in melt region and HAZ, on the premise of preserving melt depth with error margins
Fields of Study & Subjects
Additive Manufacturing Materials and Processes
Molten salt chemistry and electrochemical processes
High-Temperature Coating Behaviors
Publication details
- Journal / source
- Acta Materialia
- Publisher
- Elsevier BV
- Volume
- 309
- Pages
- 122125–122125
- Publication date
- 14 March 2026
- Language
- EN