北京科技大学学报2011，Vol.33Issue(9)：1105-1110,6.
晶粒尺寸对车轮钢解理断裂韧性的影响
Effects of grain size on the cleavage fracture toughness of a wheel steel
摘要
Abstract
The relationship between grain size and cleavage fracture toughness KIC, i.e. , conditional fracture toughness KQ, was investigated for a high speed wheel steel with 0.5% C by compact tension testing. It is indicated that the grain size has an evident effect on the fracture toughness. The fracture toughness is more dependent on the largest grain size than the average grain size of the C50 wheel steel. When the average size of the 5% largest grains is in the range of 30 to 73 μm, the cleavage fracture toughness KQ decreases linearly with the logarithm of average size of these largest grains increasing.关键词
车轮钢/晶粒尺寸/断裂韧性/解理断裂Key words
wheel steel/grain size/fracture toughness/cleavage fracture分类
金属材料引用本文复制引用
李胜军,任学冲,高克玮,宿彦京,褚武扬,江波,陈刚,赵海..晶粒尺寸对车轮钢解理断裂韧性的影响[J].北京科技大学学报,2011,33(9):1105-1110,6.基金项目
国家高技术研究发展计划资助项目 （）
高等学校博士学科点专项科研基金资助项目 （）
