ISSN: 1002-0071    Imprint: Chinese Materials Research Society
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Wei Jiang,Wei Shao,Jiangbo Sha,Chungen Zhou.[J].自然科学进展英文版,2018,28(6):740-748
Experimental studies and modeling for the transition from internal toexternal oxidation of three-phase Nb-Si-Cr alloys
  
DOI:
中文关键词:  
英文关键词:Intermetallics Superalloys Modeling studies Oxidation Nb-based alloys
基金项目:
Author NameAffiliation
Wei Jiang Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Rd., Beijing 100191, China 
Wei Shao Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Rd., Beijing 100191, China 
Jiangbo Sha Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Rd., Beijing 100191, China 
Chungen Zhou Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, 37 Xueyuan Rd., Beijing 100191, China 
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中文摘要:
      
英文摘要:
      A modified oxidation model, which assumes the cylindrical-like morphology of Cr2Nb phase, has been proposed to examine the conditions to form external scale of three-phase Nb-base alloys in this paper. The oxidation behavior of three-phase Nb-base alloys was tested at 1250 °C for 1 h and 7 h, and the experimental results were compared with the simulated results. The results show that the external CrNbO4 scale can be achieved by lengthradius ratio and volume fraction increasing for Cr2Nb phase. The simulated results are consistent with the experimental results.
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