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Volume 8 Issue 1
Mar.  2001
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Biao Gu, Lijie Qiao, and Wuyang Chu, TEM Study on Hydrogen-Induced Cracking of Fe3Al Alloy, J. Univ. Sci. Technol. Beijing, 8(2001), No. 1, pp. 35-38.
Cite this article as:
Biao Gu, Lijie Qiao, and Wuyang Chu, TEM Study on Hydrogen-Induced Cracking of Fe3Al Alloy, J. Univ. Sci. Technol. Beijing, 8(2001), No. 1, pp. 35-38.
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Materials

TEM Study on Hydrogen-Induced Cracking of Fe3Al Alloy

  • Hydrogen-induced cracking (HIC) of Fe3Al alloy was studied by in situ transmission electron microscope (TEM). Electron transparent specimens were mounted onto a constant displacement device. Stress was applied to the specimen by using a bolt through the device. The results showed that hydrogen enhanced the dislocation emission and motion in Fe3Al alloy. A dislocation free zone (DFZ) was formed following the dislocation emission. Microcrack initiated in the DFZ or at the main crack tip when the emission reached a critical extension. Hydrogen played an important role in the process of brittle fracture of Fe3Al alloy.
  • Materials

    TEM Study on Hydrogen-Induced Cracking of Fe3Al Alloy

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