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合金元素、加工與熱處理對(duì)新型近β型鈦合金TiZrMoNb力學(xué)性能的影響及微觀分析
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國(guó)家自然科學(xué)基金(30770586，30870611)；中澳科技合作特別基金(31011120049)


Effects of Alloy Elements, Processing and Heat Treatment on Mechanical Properties of a Near β Type Biomedical Titanium Alloy TiZrMoNb and Microstructure Analysis
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    系統(tǒng)研究了不同合金添加元素(Mo、Zr、Nb)、加工及熱處理對(duì)近β型醫(yī)用鈦合金力學(xué)性能和顯微組織的影響規(guī)律，討論保持醫(yī)用鈦合金生物力學(xué)相容性匹配的影響因素和方法。研究發(fā)現(xiàn)：TiNbZrMo合金中增加Zr、Mo元素含量使合金強(qiáng)化，而增加Mo、Nb元素含量和熱加工率利于降低彈性模量。經(jīng)過(guò)固溶處理后強(qiáng)度和彈性模量降低，而時(shí)效處理后合金產(chǎn)生彌散強(qiáng)化和細(xì)晶強(qiáng)化使強(qiáng)度和彈性模量提高。新合金冷熱加工性能好，無(wú)明顯各向異性，經(jīng)過(guò)適當(dāng)熱處理可以達(dá)到高強(qiáng)度、低彈性模量和優(yōu)良的塑韌性、疲勞性能綜合匹配

    Abstract:

    The influencing rule of alloy elements (Mo, Zr, Nb), processing and heat treatment on the microstructure and mechanical properties of a near β type biomedical titanium alloy TiZrMoNb (TLE) were investigated systematically; the influential factors on biomechanical compatibility matching of the TLE alloy and how to keep it were discussed. The results show that increasing the contents of Zr and Mo can strengthen the alloy, whereas increasing the contents of Mo and Nb and larger hot working rate are helpful to decrease the elastic modulus. The hot-rolled alloy after solid solution treatment possesses lower strength and elastic modulus; while for the above-mentioned alloy with another aging treatment, the strength and elastic modulus are increased, due to dispersive strengthening and fine grain strengthening. The prepared alloy possesses better cold and hot wrought properties without obvious anisotropy, and higher strength, lower elastic modulus and good comprehensive matching of ductility and toughness and fatigue resistance can be obtained after adequate heat treatment

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于振濤,張亞峰,劉 輝,麻西群,余 森,張明華.合金元素、加工與熱處理對(duì)新型近β型鈦合金TiZrMoNb力學(xué)性能的影響及微觀分析[J].稀有金屬材料與工程,2010,39(10):1795~1801.[Yu Zhentao, Zhang Yafeng, Liu Hui, Ma Xiqun, Yu Sen, Zhang Minghua. Effects of Alloy Elements, Processing and Heat Treatment on Mechanical Properties of a Near β Type Biomedical Titanium Alloy TiZrMoNb and Microstructure Analysis[J]. Rare Metal Materials and Engineering,2010,39(10):1795~1801.]
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  • 收稿日期:2009-10-14
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