摘要
本文从钝裂纹顶端的应力分布及塑性断裂的物理图象出发,指出从裂纹顶端到σ(y■)沿 X 轴分布最大值处距离ξ,是一种新的过程区概念,建立了 K_(IC)与ξ的关系,并得到了验证。
Based on the stress distribution of a blunted-crack tip and the physical picture of metallic ductile fracture,this paper points out thatξ (the dis tance between be the bluntedcrack tip and the maximum pcint of stress distribution) is a new process-zone,and this concept is different from the krafft process-zone.The relationship between k1c and ξ has been established and verified.
出处
《材料科学与工艺》
EI
CAS
1987年第3期65-73,共9页
Materials Science and Technology
关键词
金属塑性断裂
过程区
裂纹钝化半径
钝裂纹顶端应力分布
Metallic ductile fracture
process-zone
blunted radius of crack
stress distribution of blunted-crack tip
