理化检验-物理分册2025，Vol.61Issue(7)：23-26,31,5.DOI:10.11973/lhjy-wl240113
不同应力比条件下7075-T651铝合金裂纹扩展行为
Crack propagation behavior of 7075-T651 aluminum alloy under different stress ratios
卢奇 1郑程 1李凯1
作者信息
- 1. 上海材料研究所 上海市工程材料应用与评价重点实验室,上海 200437
- 折叠
摘要
Abstract
Based on ASTM E647 standard,the crack propagation behavior of 7075-T651 aluminum alloy under different stress ratios was studied.The Paris model,Walker model and Forman model were used to fit the crack growth rate,and the applicability and accuracy of each model under different stress ratios were compared and analyzed.The results show that different stress ratios significantly affected the crack propagation threshold of the material,and the threshold values were close when the stress ratios were-1 and 0.1,revealing similar crack propagation resistance.关键词
铝合金/裂纹/扩展速率/门槛值/疲劳/模型/拟合Key words
aluminum alloy/crack/expansion rate/threshold value/fatigue/model/fitting分类
矿业与冶金引用本文复制引用
卢奇,郑程,李凯..不同应力比条件下7075-T651铝合金裂纹扩展行为[J].理化检验-物理分册,2025,61(7):23-26,31,5.
