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1
題名:Effect of Omega Phase on Mechanical Properties of Ti-Mo Alloys for Biomedical Applications     (10點)
著者:Wen-Fu Ho
出版地區:台灣
出版城市:台南市
學科:醫學綜合
關鍵字:Titanium alloy ; Molybdenum ; Omega phase ; Electron microscopy ; Mechanical properties
刊名:Journal of Medical and Biological Engineering
卷期:28卷1期(2008.3)
頁碼:47-51
語言:英語
摘要: 英文摘要PDF

The present work is a study of mechanical properties of cast binary Ti-Mo alloys (containing 7.5-20 wt% Mo) and the ω phase transformation of β-phase Ti-Mo alloys. The results indicated that when the molybdenum content increased to 9 wt% and higher, a significant amount of β phase was retained and a meta-stable phase called the athermal ω phase was formed. The appearance of the ω reflections changed from sharp to diffuse with increasing molybdenum content. In addition, in the high molybdenum content alloys, the diffuse reflections moved away from the positions an lines joining bcc reflections. X-ray diffraction (XRD) results indicated clearly that ω phase intensities of Ti-10Mo and Ti-12.5Mo alloys were higher than those of the other β-phase Ti-Mo alloys, so the microhardness values of the Ti-10Mo and Ti-12.5Mo alloys were higher than those of the other β-dominated Ti-Mo alloys, When the molybdenum content increased to 15 wt% higher, we almost could not read the characteristic diffraction peak of the ω phase in the XRD patterns. The Ti-15 Mo allay (β+ ω phase) had a higher modulus than that of Ti-7.5Mo (a'-dominated phase); this may be caused by the formation of the ω phase during quenching.


    

本卷期目次
Journal of Medical and Biological Engineering 28卷1期 (2008.3)
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A Feasibility Study of an Eye-writing System Based on E1ectro-oculography/ Jang-Zern TsaiChong-Kuan LeeChao-Min WuJin-Jei WuKo-Pei Kao
Effect of Omega Phase on Mechanical Properties of Ti-Mo Alloys for Biomedical Applications/ Wen-Fu Ho
Differences in Reaching Performance between Normal Adults and Patients Post Stroke-A Kinematic Analysis/ Jyh-Jong ChangYu-Sheng YangLan-Yuen GuoWen-Lan WuFong-Chin Su
 
   
 
   

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