caa a22 4500 463221303 CHVBK 20180405153213.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-0845-6 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0845-6 Effect of matrix structure on ultrasonic attenuation of ductile cast iron [Elektronische Daten] [Xinbao Liu, Susumu Takamori, Yoshiaki Osawa] The ultrasonic attenuation of ductile cast irons with different matrices was investigated by means of ultrasonic echo waves. In the ductile cast irons with ferritic and pearlitic matrix structures, both of the ultrasonic attenuation increased with frequency. For similar frequencies, the ultrasonic attenuation of the pearlitic matrix was larger than that of the ferritic matrix. Based on the theory of ultrasonic attenuation in the solid, the mechanisms of ultrasonic attenuation in the ductile cast irons with different matrices were analyzed. It indicated that in the ductile cast irons with transformation of matrix from the ferrite to the pearlite, the mechanism of ultrasonic attenuation varied in the range of present frequencies. In the ferritic matrix, the total ultrasonic attenuation was mainly attributed to the scattering loss which included the stochastic scattering and the Rayleigh scattering. On the contrary, the absorption loss predominated in the total ultrasonic attenuation of the ductile cast iron with pearlitic matrix. Springer Science+Business Media, LLC, 2006 Liu Xinbao Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut Takamori Susumu Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut Osawa Yoshiaki Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 179-184 0022-2461 42:1<179 2007 42 10853 https://doi.org/10.1007/s10853-006-0845-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0845-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Xinbao Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Takamori Susumu Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Osawa Yoshiaki Eco-Circulation Processing Materials Group, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 179-184 0022-2461 42:1<179 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer