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Mechanical properties and fine structure of annealed and HPN-treated palladium

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Abstract

Strengthening of palladium using hydrogen-induced transformation hardening (“hydrogen phase naklep” (HPN)) in the course of the reverse β → α hydride phase transformation in palladium-hydrogen alloys has been studied. It has been shown that the degree of HPN is mainly determined by the difference of the specific volumes of the transforming phases. As the transformation temperature decreases and the difference of the specific volumes of the transforming phases increases, the degree of strengthening of palladium during HPN systematically increases and its plasticity decreases, which is accompanied by an increase in the dislocation density and magnitude of microdistortions and by a decrease in the dimensions of the mosaic blocks.

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References

  1. V. A. Goltsov, “The Phenomenon of Controllable Hydrogen Phase Naklep and Prospects for Its Use in Metal Science and Engineering,” Mater. Sci. Eng. 49(2), 109–125 (1981).

    CAS  Google Scholar 

  2. V. A. Gol’tsov, “Phenomena Caused by Hydrogen and Hydrogen-Induced Transformations,” in Hydrogen Interaction with Metals, Ed. by A. P. Zakharov (Nauka, Moscow, 1987), Chapter 9, pp. 264–292 [in Russian].

    Google Scholar 

  3. V. A. Goltsov, “Fundamentals of Hydrogen Treatment of Materials,” in Progress in Hydrogen Treatment of Materials, Ed. by V. A. Goltsov (Kassiopeya, Donetsk-Coral Gables, Fla, 2001), pp. 3–36.

    Google Scholar 

  4. V. A. Goltsov and N. N. Vlasenko, “The Hydrogen Phase Naklep Phenomenon and Its Use in Hydrogen Treatment of Metallic Materials,” in Progress in Hydrogen Treatment of Materials, Ed. by V. A. Goltsov (Kassiopeya, Donetsk-Coral Gables, Fla, 2001), pp. 203–230.

    Google Scholar 

  5. V. I. Zaitsev and V. G. Gorbach, “Changes in the Structure and Strength Properties during Heating of an Alloy Deformed in the Martensite State,” Fiz. Met. Metalloved. 17(5), 714–718 (1964).

    CAS  Google Scholar 

  6. E. A. Izmailov and V. G. Gorbach, “X-ray Diffraction Microscopic Study of the Structure of Austenite in an Fe-Ni Alloy upon Forward and Reverse Martensitic Transformation,” Fiz. Met. Metalloved. 20(1), 114–119 (1965).

    CAS  Google Scholar 

  7. V. I. Zaitsev and V. G. Gorbach, “Effect of the Initial Structure of Martensite on the Austenite Strengthening during Transformation-Induced Phase Hardening,” Fiz. Met. Metalloved. 20(4), 608–613 (1965).

    CAS  Google Scholar 

  8. V. G. Gorbach, E. A. Izmailov, and K. A. Malyshev, “Strengthening of Aging Fe-Ni-Ti Alloys in the Process of Forward and Reverse γ → α → γ Transformations,” Fiz. Met. Metalloved. 20(5), 741–748 (1965).

    CAS  Google Scholar 

  9. K. A. Malyshev, V. V. Sagaradze, I. P. Sorokin, et al., Transformation-Induced Hardening of Austenitic Iron-Nickel-Based Alloys (Nauka, Moscow, 1982) [in Russian].

    Google Scholar 

  10. V. V. Sagaradze and A. I. Uvarov, Strengthening Austenitic Steels, Ed. by V. D. Sadovskii (Nauka, Moscow, 1989) [in Russian].

    Google Scholar 

  11. G. I. Zhirov, V. A. Gol’tsov, and D. A. Glyakov, “Mechanical Properties of Palladium Hydride after Annealing and Hydrogen-Induced Transformation Hardening,” Fiz. Met. Metalloved. 97(1), 113–120 (2004) [Phys. Met. Metallogr. 97, 104–110 (2004)].

    CAS  Google Scholar 

  12. M. V. Gol’tsova, Yu. A. Artemenko, and V. I. Zaitsev, “Kinetic Peculiarities of Degassing and β → α Hydride Transformation in a Thermodynamically Open Palladium-Hydrogen System,” Fiz. Met. Metalloved. 84(4), 140–143 (1997) [Phys. Met. Metallogr. 84, 418–420 (1997)].

    CAS  Google Scholar 

  13. Ya. S. Umanskii, Yu. A. Skakov, A. N. Ivanov, et al., Crystallography, X-ray Diffraction, and Electron Microscopy (Metallurgiya, Moscow, 1982) [in Russian].

    Google Scholar 

  14. S. S. Gorelik, Yu. A. Skakov, and L. N. Rastorguev, X-ray Diffraction and Electron-Microscopic Analysis (MISIS, Moscow, 1994) [in Russian].

    Google Scholar 

  15. E. Wicke and H. Brodowsky, “Hydrogen in Palladium and Palladium Alloys,” in Hydrogen in Metals II: Application-Oriented Properties, Ed. by G. Alefeld and J. Völkl (Springer, Berlin, 1978; Mir, Moscow, 1981).

    Google Scholar 

  16. M. V. Gol’tsova and G. I. Zhirov, “Grain Displacement in Palladium and PdHx Alloys upon Hydrogen Shocks,” Fiz. Met. Metalloved. 94(3), 1–6 (2002) [Phys. Met. Metallogr. 94, 276–281 (2002)].

    Google Scholar 

  17. M. V. Goltsova, Yu. A. Artemenko, and G. I. Zhirov, “Hydride Transformations: Nature, Kinetics, Morphology,” in Progress in Hydrogen Treatment of Materials, Ed. by V. A. Goltsov (Kassiopeya, Donetsk-Coral Gables, Fla, 2001), pp. 161–184.

    Google Scholar 

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Original Russian Text © G.I. Zhirov, V.A. Gol’tsov, G.E. Shatalova, D.A. Glyakov, 2006, published in Fizika Metallov i Metallovedenie, 2006, Vol. 101, No. 1, pp. 103–112.

The author is also known by the name Goltsov. The name used here is a transliteration under the BSI / ANSI scheme adopted by this journal.—Ed.

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Zhirov, G.I., Gol’tsov, V.A., Shatalova, G.E. et al. Mechanical properties and fine structure of annealed and HPN-treated palladium. Phys. Metals Metallogr. 101, 93–102 (2006). https://doi.org/10.1134/S0031918X06010133

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  • DOI: https://doi.org/10.1134/S0031918X06010133

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