金属材料疲劳短裂纹扩展研究综述  

A Review of Studies on Fatigue Short Crack Propagation in Metallic Materials

作　　者：秦建兵 Qin Jianbing(Xi'an Aircraft Industry(Group) Company Ltd.,Aviation Industry Corporation ofChina,Ltd.,Xi'an 710089,China)

机构地区：[1]中国航空工业集团有限公司西安飞机工业(集团)有限责任公司,西安710089

出　　处：《航空工程进展》2019年第2期247-254,269,共9页Advances in Aeronautical Science and Engineering

摘　　要：本文论述了近几十年来国内外关于疲劳短裂纹的一些理论模型和实验现象等;重点研究了短裂纹的"V"型扩展规律及其特有的非扩展裂纹行为;通过各种不同复杂程度的理论模型,说明了短裂纹"V"型扩展规律,并给出了非扩展裂纹的计算方法;通过试验方法,分析了物件的形式、缺口塑性区、微观结构和试验环境等因素对短裂纹的"V"型扩展规律和非扩展裂纹行为的影响。The recent decades developments on the studies of theoretical models and experimental phenomena of fatigue short crack is reviewed.The V-shaped propagation law of short crack and its special non-propagation crack behavior are studied.Through a variety of different complexity theory model,to illustrate the "V" type of short crack propagation rule,and the non-propagation crack calculation method is given.Through experiment method,the effects of geometry,plastic zone of notch,microstructure and experiment environment on the "V" type of short crack propagation law and the non-propagation crack behavior are studied.

关 键 词：金属材料 疲劳短裂纹 非扩展裂纹 晶界 滑移带 

分 类 号：V215.5[航空宇航科学与技术—航空宇航推进理论与工程]