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Effect of cooling rate on phase transformation in the low-carbon boron-treated steel |
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| Authors: | Di Zhang Yoshiaki Shintaku Shuichi Suzuki Yu-ichi Komizo |
| Affiliation: | (1) Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki Osaka, 567-0047, Japan;(2) Plate & Bar/Wire Rod Research & Development Department, Sumitomo Metal Industries Ltd, 1-8 Fuso-cho, Amagasaki Hyogo, 660-0891, Japan;(3) Steel Sheet, Plate Titanium & Structural Seel Company, Sumitomo Metal Industries Ltd, 8-11 Harumi 1-chome, Chuo-ku, Tokyo 104-6111, Japan |
| Abstract: | In this research, phase transformation process under different thermal cycles corresponding to a low and a high heat input welding in the heat-affected zone of low-carbon boron-treated steel is systematically investigated by a high temperature laser scanning confocal microscopy. The effect of thermal cycles on the phase transformation process is quantified by measuring the transformation start temperature of each transformation product and the average number of nucleation sites of intragranular acicular ferrite. |
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