DataVXScience and Technology of Welding and JoiningPaper
journal article·2023-10

Comparison of thermomechanical responses of single-arc and dual-arc parallel additive manufacturing

Qianru Wu, Wenlai Tang, Jiquan Yang, Xuezhi Shi

Science and Technology of Welding and Joining· Volume 28· Issue 7
Publisher page
Source abstract

Abstract

Printed metallic parts often suffer from thermomechanical defects such as delamination, buckling and warping, and this effect is exacerbated in multi-arc additive manufacturing (AM) due to the extensive heat input and large molten pool. These defects originate primarily because of high residual stresses accumulated during layer-by-layer deposition. Here we develop, validate and employ a three-dimensional finite element model with two independent heat sources to analyse the thermomechanical responses in dual-arc parallel AM of Ti6Al4V thin-walled parts. The results are compared with those of the conventional single-arc AM. Although the deformation in dual-arc AM is slightly larger than that in single-arc AM, the stresses at the substrate-deposit interface for dual-arc AM are reduced by 53% due to the lower cooling rate.
Source: crossref · Quality: baseline

Research context

Materials processing

OpenAlex topics: Additive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · Welding Techniques and Residual Stresses

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory of 3D Printing Equipment & Manufacturing, School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, People's Republic of China

School of Naval Architecture and Mechanical–Electrical Engineering, Zhejiang Ocean University, Zhoushan, People's Republic of China

Funding

Natural Science Research Project of Jiangsu Higher Education Institutions · Science and Technology Achievement Transformation Project of Jiangsu Province · Key Research and Development Program of Jiangsu Province · startup funding at the Nanjing Normal University

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