열처리공학회지 (Journal of the Korean Society for Heat Treatment)
- 제12권2호
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- Pages.157-165
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- 1999
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- 1225-1070(pISSN)
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- 2508-4046(eISSN)
초음파법에 의한 저탄소강의 페라이트 결정립 크기 측정
Measurement of Ferrite Grain Size by Ultrasonic Method in Low Carbon Steel
- Hong, Soon Taik (Technical Research Lab., POSCO) ;
- Kwun, Sook In (Dept. of Metallurgical Eng., Korea Univ.) ;
- Choo, Wung Yong (Technical Research Lab., POSCO)
- 발행 : 1999.06.30
초록
Grain size of steels is one of the most important parameters which influence yield strength and fracture toughness. Ultrasonic wave propagating in polycrystalline materials is mostly attenuated by scattering at grain boundary. Effect of ultrasonic attenuation on average ferrite grain size of carbon steels with tensile strength