Study on Alloy Development and Mechanical Properties of Bio-medical Ti-alloys
Date Issued
2004
Date
2004
Author(s)
Hon, Yen-Huei
DOI
zh-TW
Abstract
This study attempts to develop Ti-alloys with elastic moduli that approach that of human bone, high strength and biocompatibility. Among the implant materials currently used, Ti-6Al-4V is the most widely used one for orthopedic application. First, This study examines the effects of various manufacturing processes, including machining (cutting, milling and grinding), hot rolling and casting, on the microstructure- both bulk and superficies of the biomedical grade Ti-6Al-4V alloy. The results indicate that after machining the microstructure of the bulk remains unchanged, while an oxide layer is evident at the surface; next to the outer-most layer, a very fine structure layer can be observed. Regarding the rolling process, at the rolling temperature of 900oC, the specimens show a slightly refined structure, whereas at 1000oC and 1100oC, they show a substantial coarse grain structure. The coarse structure of the 1000oC-rolled specimens can be refined substantially by re-rolling at temperatures lower than 957oC, which is the
Subjects
人工關節
鈦合金
熱滾軋
顯微組織
人工關節植入材
機械性質
Ti-alloys
biocompatibility
microstructure
Type
thesis
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