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Ni-doped Fe/Nickel in Iron
- Practical Electron Microscopy and Database -
- An Online Book -
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https://www.globalsino.com/EM/
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This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.
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The generic term, martensite, refers to a class of microstructures formed by diffusionless phase transformation in which the original and formed phases have a specific crystallographic relationship. In the alloys where the solute atoms occupy the interstitial positions in the martensitic lattice (e.g. carbon in iron), the structure is hard and highly strained; but where the solute atoms occupy the substitutional positions (such as nickel in iron), the martensite is soft and ductile. The degree of high-temperature phase that transforms to martensite by cooling depends significantly on the lowest temperature reached.
Table 2875a. Nitrogen solubility in Fe-Ni related alloys.
Materials |
Nitrogen, wt% |
Temperature (°C) |
Fe-10%Ni |
0.02 (at N2 pressure of 1 atm) |
1000 |
Ni-20%Fe |
0.0001
(at N2 pressure of 1 atm)
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1000 |
Fe-18Cr-12Ni-2Ti |
0.18 |
985 - 1040 |
0.21 |
1093 |
0.26 |
1150 - 1210 |
Table 2875b. Diffusion coefficients (cm2/s) of elements in Fe-Ni
alloys.
Temperature |
700 °C |
800 °C |
900 °C |
Nitrogen (N) in Fe-20Ni |
1.17
x 10-8
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3.86
x 10-8 |
1.47 x 10-7 |
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The book author (Yougui Liao) welcomes your comments, suggestions, and corrections, please click here for submission. If you let book author know once you have cited this book, the brief information of your publication will appear on the “Times Cited” page.
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