蠕墨铸铁RuT300和RuT450的低周疲劳性能和损伤机制

姜爱龙, 谭炳治, 庞建超, 石锋, 张允继, 邹成路, 李守新, 伍启华, 李小武, 张哲峰

Effect of Microstructure Characteristics of Compacted Graphite Cast Irons of RuT300 and RuT450 on Low-cycle Fatigue Properties and Damage Mechanisms

JIANG Ailong, TAN Bingzhi, PANG Jianchao, SHI Feng, ZHANG Yunji, ZOU Chenglu, LI Shouxin, WU Qihua, LI Xiaowu, ZHANG Zhefeng

图6 RuT450样品的拉伸断口

Fig.6 Tensile fractographies of a RuT450 specimen: (a) macroscopic morphology; (b) cleavage and cracks around spherical graphite; (c) large cleavage planes and cracks around worm-like graphite; (d) small cleavage planes and cracks around clusters of worm-like graphite