Effects of ultrasonic vibration-assisted compression of stainless steel 316L produced by laser powder bed fusion

Chung-Wei Cheng, Teoh Boon How, Yi Hsien Liu, Ching-Hua Hung*

*此作品的通信作者

研究成果: Article同行評審

摘要

The 3D parts printed by the laser powder bed fusion (LPBF) process may have the disadvantages of residual stress, part deformation, and surface roughness. Post-processing is usually required to improve such part characteristics. This study investigated the effects of ultrasonic vibration-assisted compression (UAC) on stainless steel 316L parts fabricated by LPBF. The morphology of the molten pools, microstructure, and hardness by UAC and conventional compression (CC) were evaluated. It was found that UAC was more likely to refine the molten pools than CC. The number of sub-grain boundaries near the compressive surface was increased significantly by UAC. Compared with the CC sample, the UAC-processed specimens showed an increased hardness of 7%.

原文American English
頁(從 - 到)159-165
頁數7
期刊International Journal of Advanced Manufacturing Technology
117
發行號1-2
DOIs
出版狀態Published - 11月 2021

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