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3 RuT300和RuT450的低周疲劳寿命

Table 3 Fatigue lives in LCF tests of the RuT450 and RuT300

Total strain amplitude (Δεt/2) / % RuT300 RuT450 0.1 105 105 - 0.15 10000 25890 13427 23136 0.2 5867 900 3382 2254 0.25 - - 2682 791 0.3 569 282 - -