engleski

Regularities of secondary hardening of highly alloyed iron alloys

The correlation between secondary hardening of the high-alloyed iron alloys and size of tension in a crystal lattice was established. The hardening phases are Me2C carbide (W2C and Mo2C in particular) and MeC carbide (vanadium carbide VC), as well as iron and chromium carbide Me23C6 and, in addition, Me7IMe6 IIintermetallides based on iron and cobalt (MeI), tungsten and molybdenum MeII). These particles and the fi elds of elastic stresses in martensite between them inhibit the dislocation movement. Dispersed precipitates block sliding planesand prevent plastic deformation.

iron alloys ; secondary hardening

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