Analyzing the compressive behavior of porous Ti6Al4V by X-ray microtomography

Samples with 40% vol. of pores and a pore size distribution between 100 and 500 µm were produced by powder metallurgy from Ti6Al4V alloy powders. Sintering was performed at 1300 °C during one hour in an inert Argon atmosphere in a vertical dilatometer. The compressive strength and the porosity of th...

وصف كامل

التفاصيل البيبلوغرافية
الحاوية / القاعدة:Materials Research
المؤلفون الرئيسيون: Iván Farias, Luís Olmos, Omar Jimenez, Héctor Javier Vergara-Hernández, Didier Bouvard, Pedro Gárnica, Martín Flores
التنسيق: مقال
اللغة:الإنجليزية
منشور في: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2017-08-01
الموضوعات:
Porosity
microtomography
compression
3D images
Ti6Al4V
الوصول للمادة أونلاين:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000601511&tlng=en
الوصف
الملخص:Samples with 40% vol. of pores and a pore size distribution between 100 and 500 µm were produced by powder metallurgy from Ti6Al4V alloy powders. Sintering was performed at 1300 °C during one hour in an inert Argon atmosphere in a vertical dilatometer. The compressive strength and the porosity of these samples was investigated before and after compression tests through X-ray microtomography. The values of the elastic modulus (8GPa) and yield strength (80MPa) are within the range of those used in bone implants. Porosity leads to greater deformation whereas fracture of compacts occurs perpendicularly to the applied load. It was determined that the origin of the failure is generated by rupture of interparticle necks and, large pores enhance the propagation of cracks.
تدمد:1516-1439

مواد مشابهة