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首页> 外文期刊>Materials transactions >Effect of Silicon Addition on Microstructure and Mechanical Properties of Cast Titanium Alloys
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Effect of Silicon Addition on Microstructure and Mechanical Properties of Cast Titanium Alloys

机译：硅添加量对铸造钛合金组织和力学性能的影响

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摘要

In order to develop a new kind of medical implant material, the microstructure and mechanical properties of cast Ti-Si alloys were investigated using small-size ingots prepared by a dental casting machine. The results show that the addition of silicon significantly changes the microstructure of titanium alloys. The Ti_5Si_3 intermetallic compound precipitation occurs in the matrix of alpha and beta phases, when the silicon content is over 1.33 mass percent. The compound is observed as a netted structure around grain boundaries of the titanium matrix when the silicon content exceeds 2.35 mass percent. In addition, the Ti-Si alloys show a good combination of strength and ductility in a wide range of silicon content in contrast to the pure titanium and Ti-6Al-4V alloys. The cast Ti-Si alloys are promising candidates for dental applications because of a good balance between strength and ductility.
机译：为了开发一种新型的医用植入材料，使用牙科铸造机制备的小型铸锭研究了铸造Ti-Si合金的显微组织和力学性能。结果表明，硅的添加显着改变了钛合金的微观结构。当硅含量超过1.33质量％时，Ti_5Si_3金属间化合物沉淀发生在α和β相的基体中。当硅含量超过2.35质量％时，观察到该化合物为围绕钛基质的晶界的网状结构。此外，与纯钛和Ti-6Al-4V合金相比，Ti-Si合金在很大的硅含量范围内显示出强度和延展性的良好组合。由于强度和延展性之间的良好平衡，铸造的Ti-Si合金是牙科应用的有希望的候选者。

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