Effect of yttrium and erbium on the microstructure and mechanical properties of Ti-Al-Nb alloys

作者：Ke Yubin^*; Duan Huiping; Sun Yanran

来源：MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 528(1): 220-225.

DOI：10.1016/j.msea.2010.09.011

• Ti-Al-Nb
• Rare earth
• Microstructure
• Mechanical property

The effect of yttrium and erbium on the microstructure and mechanical property of Ti-16A1-27Nb alloy was investigated in this paper. Experimental results showed that the phase constituent had not been changed by Y or Er additive and all the alloys were simply composed of beta, O and alpha phases. However, the grain size of the alloy can be sharply refined by Y or Er element. Compression test showed that the mechanical property of the alloy cannot be obviously increased by Y additive but can be sharply improved by Er additive because of the presence of fine (AlTiNb)(2)Er(3) precipitates in the beta phase.

• 单位
  北京航空航天大学