EVALUATION METHOD OF INTERGRANULAR STRESS CORROSION CRACK OCCURRENCE SENSITIVITY, AND INTERGRANULAR STRESS CORROSION CRACK OCCURRENCE SENSITIVITY EVALUATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an evaluation method of intergranular stress corrosion crack occurrence sensitivity capable of evaluating IGSCC occurrence sensitivity of an analyte easily in a short time, and to provide an intergranular stress corrosion crack occurrence sensitivity evaluation device.SOLUTION: Evaluation of εis performed from a distance between dendrite boundary instruction patterns before loading forced displacement of nominal strain ε, and a distance between the dendrite boundary instruction patterns during loading of the forced displacement, and εis determined as many as n region portions on each different spot. Then, εis subjected to statistical processing, and IGSCC occurrence sensitivity of an analyte is evaluated based on a statistical process value.SELECTED DRAWING: Figure 3