16Mn 钢的动态断裂与韧脆转变行为研究——Charpy V 型缺口 (CVN) 冲击试样的断裂行为  

RESEARCH INTO DYNAMIC FRACTURE AND DUCTILE/BRITTLE TRANSITION BEHAVIOR OF 16Mn STEEL Fracture Behavior of Charpy V Notched Impact Specimen

作　　者：类维生[1,2,3] 姚枚[1,2,3] 陈丙森 

机构地区：[1]冶金部钢铁研究总院 [2]燕山大学 [3]清华大学

出　　处：《机械强度》1997年第1期54-56,共3页Journal of Mechanical Strength

基　　金：国家自然科学基金

摘　　要：对１６Ｍｎ钢ＣｈａｒｐｙＶ型缺口（ＣＶＮ）试样进行了系列温度的示波冲击试验。揭示出断裂载荷随温度的变化呈现反“Ｓ”形特性，且在断裂载荷谷值点对应的温度ＴＶＣ处发生断裂的韧脆转变行为。研究表明温度ＴＶＣ受控于材料的解理特征应力ＳＣＯ。Instrumented impact test of standard Charpy V notched specimens of 16Mn steel were conducted at series temperatures.The fracture load vs.temperature curves are reversed "S" shape.It is found that the temperature T V C corresponding to the valley value of fracture load represents the ductile/brittle transition of the CVN specimen and is controlled by the cleavage characteristic stress S CO .

关 键 词：缺口试样 示波冲击 韧脆转变 钢 断裂 

分 类 号：O346.1[理学—固体力学]