Anisotropic Compression Properties of Selective Laser Melted Ti-6Al-4V

Chieh Fu Wang; Tian Lin Cheng; Bo Huan Lin; Chi Wei Lin; Ming Wei Wu; Jhewn Kuang Chen

doi:10.4028/www.scientific.net/KEM.719.87

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 719Anisotropic Compression Properties of Selective...

Anisotropic Compression Properties of Selective Laser Melted Ti-6Al-4V

Abstract:

This study observes the behaviors of selective laser melted (SLM) Ti-6Al-4V cylindrical samples when compressed along different directions. The effects of defect and microstructures upon compression behaviors are discussed. The disc-shape defects formed between the building layers does not affect the compression strength of SLM samples tested along different directions. The compression strength is up to 1330 MPa. The columnar structures formed along the building direction causes the plastic deformation to vary greatly with sample orientations. The samples compressed along the building Z direction sustain up to 24.4% deformation, while the samples compressed along the horizontal X and Y directions show a much lower fracture strain of 13.9%. The plastic deformation of columnar grains in crack propagation were observed greater than compressing with the columnar boundaries lying parallel to the compression surfaces. The disc-shape pores also tend to coalesce with each other in the X and Y samples causing a more brittle behaviors.

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Periodical:

Key Engineering Materials (Volume 719)

Pages:

87-91

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.719.87

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Online since:

November 2016

Authors:

Chieh Fu Wang, Tian Lin Cheng, Bo Huan Lin, Chi Wei Lin, Ming Wei Wu, Jhewn Kuang Chen*

Keywords:

Building Direction, Compression Tests, Fracture Strain, Selective Laser Melting, Ti-6Al-4V

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* - Corresponding Author

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