添加硼对铸造Ti-46.5Al-8Nb合金组织和性能的影响

金属学报, 2007, 43(5): 487-492.

添加硼对铸造Ti-46.5Al-8Nb合金组织和性能的影响

江治国 , 陈波 , 马颖澈 , 赵秀娟 , 刘奎 , 李依依

中国科学院金属研究所

关键词： TiAl合金 , Boron , Microstructure , Mechanical properties

Effect of boron on the microstructure and mechanical properties of as-cast TiAl alloy

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Keywords： TiAl alloys , 硼 , 组织 , 性能

研究了硼对Ti-46.5Al-8Nb合金组织的影响。研究发现硼细化了TiAl合金的晶粒尺寸，粗化了片层间距。片层间距与晶粒尺寸d-1/2符合线性关系。室温断裂强度与晶粒尺寸符合Hall-Petch关系。

Effect of boron on the microstructue and mechanical properties of as-cast Ti-46.5Al-8Nb alloy has been studied. It has been found that boron can refine TiAl grain size and coarsen interlamellar spacing. The interlamellar spacing () shows linearity relationship with grain size d-1/2. The Ultimate tensile strength (UTS) shows Hall-Petch dependences on grain size.

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添加硼对铸造Ti-46.5Al-8Nb合金组织和性能的影响

Effect of boron on the microstructure and mechanical properties of as-cast TiAl alloy

参考文献