IIW recommendations for the HFMI treatment for improving the fatigue strength of welded joints von Marquis, G., Barsoum, Zuheir

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Particle strengthening of metals and alloys von Nembach, E. (Eckhard)

Introduction to strengthening mechanisms. von Felbeck, David K.

New ways of increasing the strength of metals ISI publication (Iron and Steel Institute.) von Ivanova, Vera Semenovna