Hydrogen embrittlement evaluation apparatus and hydrogen embrittlement evaluation method

摘要

PROBLEM TO BE SOLVED: To provide a hydrogen brittleness evaluation device and a hydrogen brittleness evaluation method capable of evaluating hydrogen influence on peeling strength of a microstructure interface.SOLUTION: A device 100 is configured to evaluate a hydrogen brittleness characteristic of a test piece 1 formed with a minute cantilever 10 extending in a Y direction. The test piece 1 has only one microstructure interface 1b passing between a stationary end 10a and a free end 10b of the minute cantilever 10. The microstructure interface 1b is substantially perpendicular to the Y direction. The minute cantilever 10 has a first surface 10c formed on a surface 1a of the test piece 1, and a second surface 10d substantially perpendicular to the first surface 10c and substantially parallel with the Y direction. The minute cantilever includes: an electrolyte tank 2; a counter electrode 3; an external power supply 4; an indenter 5 provided on a free end 10b side with respect to the microstructure interface 1b on the second surface 10d, and configured to apply a load to a direction substantially perpendicular to the second surface 10d; and a measurement unit 6 configured to measure the displacement and the load of the indenter 5.SELECTED DRAWING: Figure 1