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The grain refinement efficiency of standard 5Ti-0.2B grain refiners from two producers was compared with the high efficiency Optifine 5Ti-1B grain refiner and a newly developed Optifine 5/0.2 grain refiner. Grain refinement tests were performed in an AA1070 alloy. The tests show that the high efficiency Optifine grain refiners can be added at a 40–90% lower addition rate. This will have a positive effect on the qualityQuality of the final product. 

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Comparison of Nucleation Potency of TiB2 in 5Ti-0.2B and 5Ti-1B Grain Refiners

  • 会议论文

  • 发表日期：

    2026年

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  • Rein Vainik,
  • Wei-Tao Zhao,
  • Hao Guan,
  • Wen Zang,
  • Fu-Xing Yu,
  • Jing Xin,
  • Zhong-Wei Jia,
  • Xu Wang,
  • Geoffrey Sigworth

摘要

The grain refinement efficiency of standard 5Ti-0.2B grain refiners from two producers was compared with the high efficiency Optifine 5Ti-1B grain refiner and a newly developed Optifine 5/0.2 grain refiner. Grain refinement tests were performed in an AA1070 alloy. The tests show that the high efficiency Optifine grain refiners can be added at a 40–90% lower addition rate. This will have a positive effect on the qualityQuality of the final product.