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      Elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloy with minor Ho addition

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          Abstract

          The microstructure and elevated temperature compressive behavior of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys with and without 0.1 at.% Ho were investigated by using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and compression tests. The results show that the addition of 0.1 at.% Ho to the matrix alloy significantly increases its elevated temperature strength at a higher strain rate, while the strengthening effect becomes weak at a lower strain rate. The elevated temperature compressive deformation behavior of the Ho-doped alloy can be adequately described by the power-law equation. The mechanism of Ho addition on elevated-temperature compressive behavior of the alloy is discussed in the paper.

          Author and article information

          Journal
          ijmr
          International Journal of Materials Research
          Carl Hanser Verlag
          1862-5282
          2195-8556
          2008
          : 99
          : 2
          : 228-232
          Affiliations
          a Superalloy Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
          b Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
          Author notes
          1 Correspondence address: Prof. Jianting Guo, Superalloy Division, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China, Tel.: +86 24 2397 1917, Fax: +86 24 8397 8045. E-mail: jtguo@ 123456imr.ac.cn
          Article
          MK101628
          10.3139/146.101628
          38f350b4-678b-441d-b764-61a709f56af1
          © 2008, Carl Hanser Verlag, Munich
          History
          : 13 May 2007
          : 22 November 2007
          Page count
          References: 18, Pages: 5
          Categories
          Applied

          Materials technology,Materials characterization,Materials science
          Microstructure,Ho,Mechanical properties,Intermetallics

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