Work

Additive-Manufacturing-Induced Cell Structure in Stainless Steel 316L: 3D Morphology and Formation Mechanism

Year: 2024

Type: article

Abstract: The 3D morphology of the additive-manufacturing-induced cell structure is characterized and its formation in austenitic stainless steel 316L fabricated by laser powder bed fusion is analyzed. The experimental results demonstrate that the cell structure has a 3D prism-like morphology with a crystallography-dependent spatial orientation. The formation of the cell structure is discussed. It is proposed that both the liquid–solid transformation and thermal strain contribute to the formation: the initial cells form during the liquid–solid transformation, and the final dislocation cell structure is shaped by thermal-stress-induced deformation during cooling and subsequent thermal cycles.

Source: Metallurgical and Materials Transactions A

DOI: 10.1007/s11661-024-07644-w

Authors: Xiaobo Wang, Venkata Karthik Nadimpalli, Niels Skat Tiedje, Dorte Juul Jensen, Tianbo Yu

Institution: Technical University of Denmark

Language: English

Topic: Additive Manufacturing Materials and Processes

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,790

Funders: Villum Fonden, Danmarks Tekniske Universitet