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Role of Co in formation of Ni-Ti clusters in maraging stainless steel |
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| Authors: | Jialong Tian M Babar Shahzad Wei Wang Lichang Yin Zhouhua Jiang Ke Yang |
| Affiliation: | 1. School of Materials Science and Engineering, Northeastern University, Shenyang 110004, China;2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;3. Shenyang National Laboratory for Materials Science, 72 Wenhua Road, Shenyang 110016, China;4. School of Metallurgy, Northeastern University, Shenyang 110004, China |
| Abstract: | The effect of Co addition on the formation of Ni-Ti clusters in maraging stainless steel was studied by three dimensional atom probe (3DAP) and first-principles calculation. The cluster analysis based on the maximum separation approach showed an increase in size but a decrease in density of Ni-Ti clusters with increasing the Co content. The first-principles calculation indicated weaker Co-Ni (Co-Ti) interactions than Co-Ti (Fe-Ti) interactions, which should be the essential reason for the change of distribution characteristics of Ni-Ti clusters in bcc Fe caused by Co addition. |
| Keywords: | Maraging stainless steels Ni-Ti cluster First-principles calculation Three-dimensional atom probe |
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