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

表1 RuT300和RuT450的化学成分

Table 1 Chemical compositions of RuT300 and RuT450 (mass fraction，%)

Material C Si Sn Cu Mn S Fe RuT300 4.1 2.22 0.035 0.39 0.19 0.051 Bal. RuT450 3.81 2.20 0.09 0.80 0.32 0.01 Bal.