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Vol 52 No 1 铸造
J an. 2003 FOUNDRY · 33 ·
水附着对不同基体组织球墨铸铁断裂韧性的影响
蔡启舟1 , 魏伯康1 , 田中雄一2 , 小松真一郎3
(1. 华中科技大学材料科学与工程学院, 湖北武汉 430074 ; 2. 室兰工业大学日本室兰市; 3. 近畿大学, 日本东广岛市)
摘要: 研究水附着状态下不同基体组织球墨铸铁的断裂韧性脆化行为的结果表明, 水附着状态下, 具有较高抗拉强度
的奥贝球铁、淬火回火球铁及珠光体球铁的弹塑性断裂韧性(J Ⅰc) 显著下降, 发生明显的断裂韧性脆化行为; 而铁素
体含量较高的铸态球铁和铁素体球铁则无断裂韧性的脆化行为。
关键词: 球墨铸铁; 水附着; 断裂韧性; 脆化行为
中图分类号: TG111. 9 文献标识码: A 文章编号: 1001 4977 (2003) 01 0033 05
Influence of Contact with Water on Fracture Toughness
of Ductile Cast Iron with Various Kinds of Matrix
CAI Qi zhou1 , WEI Bo kan2g12, Yuichi Tanaka22 ,2 Shinichiro Komatsu3
(1. School of Materials Science and Engineering , Huazhong University of Science and Techno1log1y 1,
Wuhan , 430074 , Hubei , China ; 2. Muroran Institute of Technology , Muroran , J apan ; 3. Kinki
University , Higashihiro shima , J apan)
Abstract : The embrittlement behavior of fracture toughness for ductile cast iron with various kinds of ma
trix by contact with water was investigated in this paper. The elastic plastic fracture toughness (J Ⅰc) of
austempered , quenched tempered and pearlitic ductile iron that has relatively high tensile strength de
creased remarkably , shows obvious embrittlement behavior of fracture toughness. But , as cast with high
er ferrite content and ferritic ductile cast iron exhibit no embrittlement behavior of