Using a high-temperature microhardness tester capable of operating under substantial hydrogen pressures, it has been established that the presence of the hydrogen causes a diminution of the normal dynamic strain-ageing peak hardness in ferritic materials. The effect is sensitive to strain rate and is explained in terms of the differences between hydrogen and the other interstitial atoms in diffusivity and energy of interaction with dislocations.
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References
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GoveK. B. and CharlesL. A., Metallurgist, 1974, 6, 119.
