脆断事故的原因分析和预防措施  

Analysis on Reasons and Preventive Measures for Fragile Split

作　　者：戚国胜[1] 

机构地区：[1]浙江省台州师范专科学校物理系,浙江临海317000

出　　处：《南方冶金学院学报》2002年第1期28-33,共6页Journal of Southern Institute of Metallurgy

摘　　要：分析高强度材料和大型工程结构元件发生低应力脆性断裂的原因及条件,指出传统强度设计理论的局限性,从设计和工艺上提出防止发生低应力脆断事故的具体措施,给使用高强度材料和设计大型工程结构元件时提供参考.This paper points out the limitations of traditional strength design theory after analyzing the reasons and conditions for fragile split of low stress of the high -strength materials and the large engineering structural components,and then suggests the detailed preventive measures both in design and in technology for this kind of split when the high-strength materials are used and large engineering structural components are designed.

关 键 词：高强度材料 低应力脆性断裂 裂纹 应力强度因子 断裂韧度 大型工程结构元件 

分 类 号：TG111.91[金属学及工艺—物理冶金] O346.11[金属学及工艺—金属学]