落锤试验测定船板的无塑性转变温度  

Determination of Nil-ductility Transition Temperature of Ship Plate by Drop Weight Test

作　　者：郑香增[1] 夏佃秀[1] 李兴芳[1] 

机构地区：[1]济南钢铁集团总公司,山东济南250101

出　　处：《山东冶金》2004年第1期57-58,共2页Shandong Metallurgy

摘　　要：无塑性转变温度是安全设计的重要参量 ,广泛应用于材料研究和产品质量控制过程。利用落锤试验方法 ,测定了AH3 6级船板的无塑性转变温度为 -2 5℃ ,并对试验结果进行了评定。结果表明 ,落锤试验方法简单 ,试验数据重复性好 ,当船板的服役温度高于NDTT时 ,基本保证船板不会发生脆断。Nil-ductility transition temperature is an important parameter for safety design and it is wide used in material research and control process of product quality. The nil-ductility transition temperature of AH36 ship plate is -25℃ which is determined by drop weight test method. The result is stated that the drop weight test is a good and simple method and has good repetitiveness of experimental data. The brittle fracture occurred in AH 36 can be avoided basically when the service temperature is higher than nil-ductility transition temperature.

关 键 词：落锤试验 无塑性转变温度 AH36级船板 裂纹扩展 铁素体结构钢 

分 类 号：TG142.15[一般工业技术—材料科学与工程] U668.2[金属学及工艺—金属材料]