结构钢冷脆的解理特征应力理论——Ⅰ解理特征应力概念及结构钢解理断裂行为分析  

Cleavage Characteristic Stress Theory for Low Temperature Brittle Fracture of Structural Steel ——Ⅰ Concept of Cleavage Characteristic Stress and General Analysis of Cleavage Fracture Behavior of Structural Steel

作　　者：类维生[1,2] 杨庆祥[1,2] 姚枚[1,2] 

机构地区：[1]冶金部钢铁研究总院 [2]燕山大学

出　　处：《钢铁研究学报》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

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.

关 键 词：结构钢 冷脆 解理断裂 

分 类 号：TG142.41[一般工业技术—材料科学与工程]