کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9679304 | 1455080 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The pathways of dynamic recrystallization in all-metal hip joints
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The pathways of dynamic recrystallization in all-metal hip joints The pathways of dynamic recrystallization in all-metal hip joints](/preview/png/9679304.png)
چکیده انگلیسی
In the present study metal-on-metal (MoM) McKee-Farrar prostheses of the first generation were investigated by means of transmission electron microscopy (TEM). It was possible to observe the worn regions using a novel taper section preparation technique without producing any artefacts. Thereby, it could be shown that the wear in vivo leads to a reduction in grain size by a factor of up to 20,000. This is achieved by recrystallization via two pathways which act simultaneously within the subsurface regions. One is dominated by the metallurgical characteristics of the material and follows the gradient of the friction induced shear strains from the bulk towards the surface. The other one is merely acting within the tribological contact volume directly at the surface. Both mechanisms lead to a significant increase in strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 259, Issues 7â12, JulyâAugust 2005, Pages 887-897
Journal: Wear - Volume 259, Issues 7â12, JulyâAugust 2005, Pages 887-897
نویسندگان
R. Büscher, A. Fischer,