Heat Treatment of Metals ›› 2024, Vol. 49 ›› Issue (6): 211-216.DOI: 10.13251/j.issn.0254-6051.2024.06.034

• MATERIALS RESEARCH • Previous Articles     Next Articles

Solution behavior of Ta in smelted Fe-based alloy

Shi Xianbo1, Shang Ningbo1, Bai Xuefei2, Lu Lun3, Yan Wei1, Shan Yiyin1   

  1. 1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 111016, China;
    2. Rizhao Steel Yingkou Medium Plate Co., Ltd., Yingkou Shandong 115005, China;
    3. Fushun Special Steel Co., Ltd., Fushun Liaoning 113001, China
  • Received:2023-11-27 Revised:2024-04-09 Online:2024-06-25 Published:2024-07-29

Abstract: Solution behavior of tantalum (Ta) in the smelted Fe-based alloy was experimentally studied by means of vacuum induction melting as well as SEM and EPMA observations. The results show that Ta as an alloying element is dissolvable in the Fe-based alloy during melting process. An appropriate amount of Ta can be completely dissolved in Fe-based metals. When smelted Ta-containing Fe-based alloys by vacuum induction, reducing oxygen content and extension of refining time can reduce Ta oxidation damage and promote Ta dissolution in the smelted Fe-based alloy. It is analyzed that oxidation loss of Ta can be reduced by adding C and Cr. However, the solution of Ta cannot be improved when Cr is involved.

Key words: Ta, Fe-based alloy, solution, vacuum induction melting

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