학술논문
EVALUATION OF THE IMPACT ENERGY OF THE SAMPLES PRODUCED BY THE ADDITIVE MANUFACTURING TECHNOLOGY.
Document Type
Article
Author
Source
Subject
*THREE-dimensional printing
*DIRECT metal laser sintering
*SURFACE cracks
*HEAT treatment
*DUCTILE fractures
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Language
ISSN
0543-5846
Abstract
The article covered the evaluation of the impact energy, notch toughness and morphology of the fracture surfaces of the specimens manufactured by the Direct Metal Laser Sintering Technology. Specimens without heat treatment with no notch were not broken through in course of testing, therefore there was no fracture surface present. The heat treatment resulted in the increase in hardness values. The values of impact energy after the heat treatment was approximately 60 % lower. Ductile intergranular fracture with more or less segmented dimple morphology appeared in every specimen. At places where the internal plastic bond was resisting the test, cracks remaining after particles broke away from the surface can be seen as craters. [ABSTRACT FROM AUTHOR]