Crystallographic texture control of beta-type Ti-15Mo-5Zr-3Al alloy by selective laser melting for the development of novel implants with a biocompatible low Young's modulus

SCRIPTA MATERIALIA

卷:132

Article

Ishimoto, Takuya^1,2  Hagihara, Koji^2,3  Hisamoto, Kenta¹  Sun, Shi-Hai^1,2  Nakano, Takayoshi^1,2 

[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Anisotrop Design & Res Ctr, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[3] Osaka Univ, Grad Sch Engn, Dept Adapt Machine Syst, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

关键词: Selective laser melting;    Titanium alloys;    Texture;    Epitaxial growth;   

DOI  :  10.1016/j.scriptamat.2016.12.038

来源: Elsevier

【 摘 要 】

We first successfully achieved the two types of distinct texture control in low-modulus beta-type Ti-15Mo-5Zr3-Al alloy products using selective laser melting. Bidirectional scanning with and without a rotation of 90 between the layers gave rise to different textures with preferential orientations of 001 and 011 along the building direction, respectively. Control of the growth behavior of the columnar cells in the melt pools via scanning strategies enabled the generation of such different textures. The obtained material exhibits a low Young's modulus of 68.7 +/- 0.9 GPa, which potentially allows for the development of implants that can suppress stress shielding. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd.

【 授权许可】

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