Fatigue of Additive Manufacturing Specimens: A Comparison with Casting Processes

Proceedings

Charkaluk, Eric¹  Chastand, Victor² 

[1] Laboratoire de Mécanique des Solides, CNRS, Ecole Polytechnique, 91128 Palaiseau, France;Thales Global Services, 78140 Vélizy-Villacoublay, France

关键词: additive manufacturing;    fatigue;    damage mechanisms;   

DOI  :  10.3390/ICEM18-05352

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this paper, the specificity and/or the common features of materials coming from such new additive manufacturing processes will be compared to more classical one, like casting process. Fatigue properties of Ti-6Al-4V specimens built by EBM and SLM are first compared depending on several process parameters. Then, at the microstructure scale, it is shown that surface defects and unmelted zones seem to be the dominant features. It will be shown that similarities can then be drawn with casting processes where shrinkage and pores are also associated to damage mechanisms.

【 授权许可】

CC BY