期刊
VIRTUAL AND PHYSICAL PROTOTYPING
卷 11, 期 1, 页码 41-47出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17452759.2016.1142215
关键词
Titanium alloy; selective laser melting; microstructure; mechanical property; additive manufacturing
资金
- Academic Research Fund (AcRF) Tier 1 by Ministry of Education, Singapore [RG122/14]
- Nanyang Technological University Research Student Scholarship through Singapore Centre for 3D Printing
Selective laser melting is an advanced manufacturing process which can control the microstructure evolution and mechanical properties of as-manufactured products via various processing parameters. In this study, the porosity/relative density, surface quality, microstructure and mechanical properties were investigated on the selective laser melted Ti-6Al-4V alloy specimens fabricated with a wide range of laser energy inputs. It was found that the microstructure of selected laser melted Ti-6Al-4V alloys is typical of acicular martensites a'. Quantitative analysis reveals that the relative density, martensitic lath size and microhardness increase with the laser energy input. The surface quality is also substantially affected by the energy input.
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