Abstract: Ti-1100 as-cast alloys with different contents of Yb2O3 were prepared by tungsten electrode non-consumption arc furnace. The WDW-300 electronic universal testing machine was used to compress the alloy at temperatures of 25—800 ℃ and strain rate of 10-4—10-2 s-1. The effect of Yb2O3 on the mechanical properties of Ti-1100 as-cast alloy was investigated. Scanning electron microscopy was used to observe the microstructure changes and compression fracture appearance of the alloy. The results show that the yield strength of Ti-1100 alloy was improved obviously by the addition of Yb2O3. At 25—600 ℃, the alloy with Yb2O3 content of 0.45wt% had the best compression yield strength improvement. At 800 ℃, the alloy had the highest compressive yield strength when the Yb2O3 content is 0.60wt%. The grain size and α lamellar spacing of Ti-1100 alloy were refined obviously by adding Yb2O3. The plastic deformation ability of the alloy with Yb2O3 content of 0.45wt% is obviously enhanced.
贾宝华, 刘翔, 顾永强, 李革. Yb2O3对Ti-1100铸态合金高温力学性能的影响[J]. 材料导报, 2020, 34(4): 4087-4092.
JIA Baohua, LIU Xiang, GU Yongqiang, LI Ge. Effect of Yb2O3 on Mechanical Properties of Ti-1100 As-cast Alloy Under High Temperature. Materials Reports, 2020, 34(4): 4087-4092.
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2020, Vol. 34 
