TEST DEVICE FOR METALLIC MATERIALS RESISTANT TO HYDROGEN EMBRITTLEMENT

摘要

Disclosed is an apparatus for testing hydrogen embrittlement of metals. Hydrogen embrittlement test apparatus of metal according to the present invention, a housing in which a circular working space divided into first and second spaces is formed therethrough; a specimen fixing member having one end configured to fix one end of the metal test specimen toward the first space and the opposite side positioned outside the housing; a first cover member through which the specimen fixing member is airtightly coupled and coupled to the housing to seal the first space side of the working space; The other end of the metal test specimen is fixed and installed in the working space to face the specimen holding member so that the first region is located in the first space, the second region is located in the second space, and the first and second spaces a piston through which at least two or more balance holes for communicating with each other are formed; a second cover member coupled to the housing to close the second space; And one end is airtightly penetrated through the second cover member and coupled to the piston, and the other end includes a connecting member located outside the second cover member and connected to the tensile tester, the inner diameter of the first space is formed to be smaller than the inner diameter of the second space so that the cross-sectional area of the first area of the piston located in the first space is smaller than the cross-sectional area of the second area located in the second space, The cross-sectional area is formed to be equal to the sum of the cross-sectional area of the first region positioned in the first space and the cross-sectional area of the connecting member positioned in the second space, and when hydrogen is supplied to the first space, the metal It is characterized in that the tensile and compressive pressures acting on the test specimen are parallel to each other.