摘要
解理特征应力理论是姚枚等人提出的一种新的冷脆理论。这一理论的主要内容是：①提出“解理特征应力”作为表征钢材解理断裂阻力的特征参量，并阐明了其在钢材冷脆行为中的作用；②提出“冷脆特征温度”及“冷脆临界裂纹尺寸”作为定量评定钢材冷脆倾向、防止钢结构发生冷脆断裂倾向的特征参量；③根据解理特征应力理论，对材料及结构冷脆的一些重要现象及规律进行分析。本文介绍该理论的第一部分。
Cleavage characteristic stress theory, which is a new theory for low temperature brittleness of structural steel proposed by prof.Yao Mei and his colleagues, contains mainly three parts as follows: ①Introduction of a new concept of “cleavage characteristic stress” as a parameter of resistance to cleavage fracture and its role in the low temperature brittleness analysis of structural steel; ②Introduction of “characteristic transition temperature of brittleness” and “critical crack size for low temperature brittleness” as new parameters for quantitative assessment for low temperature brittleness of structural steels; ③Application of this theory to the explanation of the typical and important phenomena and features of low temperature brittleness. The present paper devoted to the first part.
出处
《钢铁研究学报》
CSCD
北大核心
1997年第3期32-36,共5页
Journal of Iron and Steel Research
基金
高校博士点基金
关键词
结构钢
冷脆
解理断裂
structural steel
low temperature brittleness
cleavage fracture
