Abstract
The Gleeble3500 combined with SEM, TEM and other experimental methods are employed in this paper to investigate the effects of zirconium content on impact toughness of heat affected zone (HAZ) of hull structure steel plate during the large heat input welding. The results showed when 0.01% zirconium were added in the steel, the impact energy reached 224 J at-60°C experienced 150 kJ/cm welding heat input. But the large-size rectangular inclusions are found in CGHAZ when 0.02% zirconium were added in the steel, the impact energy fell to 38 J at-60°C experienced 150 kJ/cm welding heat input, the large-size inclusions, especially rectangular inclusion, were the main cause for the sharp decline of low temperature toughness after welding.
Publisher
Trans Tech Publications, Ltd.
Reference8 articles.
1. Li Z J, Yu S P, Lei Yi, et al. Transactions Of The China Welding Institution, 28(2007): 57~58.
2. Wang W, Fu L M. ACTA Metallurgica Sinica, 44(2008): 723~728.
3. Su W, Wang X M, Tang Y P, et al. Journal of University of Science and Technology BeiJing, 32(2010): 195.
4. LIN Jian-guo, ZHANG Yun-fei, MA Mo. Transactions of Nonferrous Metals Society of China, 20(2010): 390-394.
5. YE Yi-cong, HE Liang-ju, LI Pei-jie. Transactions of Nonferrous Metals Society of China, 20(2010): 465-470.