Three-dimensional characterization of pores in Ti-6Al-4V alloy

Materials Research

Márcia Regina Baldissera²  Paulo Rangel Rios¹  Luis Rogério Oliveira Hein¹  Hugo Ricardo Zschommler Sandim¹ 

[1] ,Universidade Federal de Itajubá Instituto de Ciências Exatas Itajubá MG ,Brazil

关键词: 3D characterization;    serial sectioning;    titanium alloys;   

DOI  :  10.1590/S1516-14392011005000014

来源: SciELO

【 摘 要 】

The direct three-dimensional characterization of opaque materials through serial sectioning makes possible to visualize and better quantify a material microstructure, using classical metallographic techniques coupled with computer-aided reconstruction. Titanium alloys are used as biomaterials for bone implants because of its excellent mechanical properties, biocompatibility and enhanced corrosion resistance. The Ti-6Al-4V alloy (in wt. (%)) with porous microstructure permits the ingrowths of new-bone tissues improving the fixation bone/implant. This is important to understand connectivity, morphology and spatial distribution of pores in microstructure. The Ti-6Al-4V alloy compacts were produced by powder metallurgy and sintered at three distinct temperatures (1250, 1400 and 1500 °C) to obtain distinct microstructures in terms of residual porosity. The visualization of the reconstructed 3D microstructure provides a qualitative and quantitative analysis of the porosity of Ti6Al4V alloy (volume fraction and pore morphology).

【 授权许可】

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