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Characterization of lattice defects and tensile deformation of biomedical Co29Cr9W3Cu alloy produced by selective laser melting
Lu, Yanjin; Yang, Chunguang; Liu, Yujing; Yang, Ke; Lin, Jinxin
2019-12-01
Source PublicationADDITIVE MANUFACTURING
ISSN2214-8604
Volume30
AbstractIn this study, novel biomedical Co29Cr9W3Cu samples were fabricated using selective laser melting (SLM) technology. In order to better understand the formation of the lattice defects during the melting process, and the tensile deformation mechanism of the SLM-produced Co29Cr9W3Cu samples, the microstructures of the samples before and after tensile deformation were observed using a scanning electron microscope (SEM), a transmission electron microscope (TEM), and an electron back-scattered diffraction (EBSD), respectively. The SEM morphology indicated that the non-equilibrium structure of the SLM-produced Co29Cr9W3Cu samples contained cellular and columnar subgrains. The TEM observation and EBSD analysis showed that the accumulated residual stress during the SLM process predominated in the overlapping regions between the adjacent scanning tracks, which consequently induced a larger number of the lattice defects, such as dislocations and overlapping stacking faults. The analysis of the tensile deformation revealed that the main plastic deformation was caused by the strain-induced martensitic transformation effect in the SLM-produced Co29Cr9W3Cu samples.
KeywordCo29Cr9W3Cu alloy Selective laser melting Lattice defects Tensile deformation Martensitic transformation
Indexed BySCI
Language英语
WOS IDWOS:000501768100010
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80569
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Lu, Yanjin,Yang, Chunguang,Liu, Yujing,et al. Characterization of lattice defects and tensile deformation of biomedical Co29Cr9W3Cu alloy produced by selective laser melting[J]. ADDITIVE MANUFACTURING,2019,30.
APA Lu, Yanjin,Yang, Chunguang,Liu, Yujing,Yang, Ke,&Lin, Jinxin.(2019).Characterization of lattice defects and tensile deformation of biomedical Co29Cr9W3Cu alloy produced by selective laser melting.ADDITIVE MANUFACTURING,30.
MLA Lu, Yanjin,et al."Characterization of lattice defects and tensile deformation of biomedical Co29Cr9W3Cu alloy produced by selective laser melting".ADDITIVE MANUFACTURING 30(2019).
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