METHOD OF EVALUATING TENDENCY OF ALLOYS TO STRESS-CORROSION CRACKING Russian patent published in 2009 - IPC G01N17/00 

FIELD: physics; measurement.

SUBSTANCE: present invention relates to non-destructive testing of metals, particularly to determination of resistance of materials to stress-corrosion cracking. The method of evaluating tendency of alloys to stress-corrosion cracking involves preparing a microsection, on the polished surface of which a chemical reagent is applied. The surface of the microsection is etched. The etched surface of the section is examined, for example, under a microscope, in order to show layers forming a space network. Micro-hardness is measured for layers and regions adjacent to these layers. The tendency of alloys to stress-corrosion cracking is determined from the increase of micro-hardness of regions above the micro-hardness of the layers themselves.

EFFECT: determination of the tendency of steel and alloys to delayed failure through micro-structure analysis of the test alloy.

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