열처리공학회지 (Journal of the Korean Society for Heat Treatment)

  • 제21권4호
  • /
  • Pages.199-204
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  • 2008
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  • 1225-1070(pISSN)
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  • 2508-4046(eISSN)
한국열처리공학회 (The Korean Society for Heat Treatment)
권호 표지

열처리에 따른 3Cr-1Mo강의 Barkhausen noise 특성

Barkhausen Noise Characteristics of 3Cr-1Mo Steel with Heat-treatment

  • 투고 : 2008.06.29
  • 심사 : 2008.07.19
  • 발행 : 2008.07.31
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초록

The destructive method is reliable and widely used for evaluating the properties of material but it is time-consuming and difficult to prepare specimens from in-service industrial facilities. In the present research, Barkhausen Noise (BN) has been used to evaluate changes of mechanical properties due to heat treatment condition. The BN voltage (rms voltage) was measured with grain size. The rms voltage of BN increased with the heat treatment temperature ($870{\sim}1000^{\circ}C$) because the grain size increased with the temperature. The rms voltage of BN decreased with various heat treatment processes, such as quenched, tempered and PWHT. The BN can be used for the nondestructive evaluation of the forged reactor vessels. and moreover, it may be effectively used in the field application.

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