高强度低合金钢的冷脆转变与加载速度的关系  

EFFECT OF LOADING RATES ON DUCTILE-BRITTLE TRANSITION BEHAVIOR OF HIGH STRENGTH LOW ALLOY STEELS

作　　者：黄彦良[1] 鄢文彬[2] 涂铭旌[3] 

机构地区：[1]中国科学院金属腐蚀与防护研究所 [2]西南交通大学 [3]成都科技大学

出　　处：《兵器材料科学与工程》1993年第1期3-7,共5页Ordnance Material Science and Engineering

基　　金：国家自然科学基金;59071043

摘　　要：对新发展的HQ80C和HQ100钢的动态加载断裂韧性J_(id)进行了测定,用应变片法确定启裂点。引入了一个韧脆转变的动力学模型来解释试验结果并对结果进行了讨论。In the present study the crack initiation fracture toughness J_(id) of HQ80C and HQ100 steel test was carried out by using the strain gauge method. The results of the dynamic toughness tests show that the fracture toughness of the materials on the upper shelf increases with the increasing of strain rate and the ductile-brittle transition temperature elevated, but for HQ100 steel the fracture toughness under 5.54m/s is lower than that under 2.00m/s due to the critical strain rate. In the end a kinetic model for ductile-brittle fracture mode transition behavior is introduced to explain the expetimental results.

关 键 词：高强度钢 结构钢 断裂韧性 

分 类 号：TG142.41[一般工业技术—材料科学与工程]