Non-destructive evaluation for creep damage of high-chrome steels by using a magnetic sensor

This paper presents a non-destructive evaluation of creep damage for high-chrome steels by using a magnetic sensor. The developed magnetic sensor, which can measure the magnetic flux density, B, and the magnetic field strength, H, by B-coil and H-coil, is applied to make clear magnetic properties related to material changes with creep damage. The measured magnetic properties show the material changes of creep damages, and these results are discussed for the capability of a non-destructive evaluation for high-chrome steels. (author)