Influence of sandblasting of Ti6Al4V alloy on the subsurface hardness and residual stresses state

被引：12
作者：
Multigner, M. [1 ,2 ]
Fernandez-Castrillo, P. [1 ]
Ferreira-Barragans, S. [1 ]
Gonzalez-Doncel, G. [1 ]
Gonzalez-Carrasco, J. L. [1 ,2 ]
机构：
[1] CSIC, CENIM, Madrid, Spain
[2] CIBER BBN, Madrid, Spain
来源：
REVISTA DE METALURGIA | 2009年 / 45卷 / 01期
关键词：
Ti6Al4V; Sandblasting; Residual stresses; Synchrotron radiation; Biomaterials; DENTAL IMPLANT APPLICATIONS; TITANIUM-ALLOY; FATIGUE; BEHAVIOR; DEFORMATION; DIFFRACTION; PROSTHESES; SURFACE;
D O I：
10.3989/revmetalm.0803
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Sandblasting of Ti6Al4V alloy is used to enhance mechanical fixation of the implants. Under the mechanical point of view, such treatment yields a decrease of the fatigue resistance. In this work we evaluate by means of synchrotron radiation the residual stress state in sandblasted specimens and the furtheer relaxation process after a thermal oxidation treatment at 500 degrees C. It has been found a significant compressive stress gradient with a maximum of about 700 MPa near the surface. Despite the severe deformation experienced by the surface during sandblasting microhardness measurements failed to show any sursurface hardening. A thermal oxidation treatment (500 degrees C/1h) of the sandblasted specimen yield the stress relief and a significant subsurface bardening.
引用
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页码：52 / 57
页数：6
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