[1]施翔晶,马华.不同环境下2D70铝合金低周疲劳性能的研究[J].中国材料进展,2012,(10):047-50.[doi:10.7502/j.issn.1674-3962.2012.10.08]
　SHI Xiangjing,MA Hua.Study on Low Cycle Fatigue Performances of 2D70 Aluminum Alloy in Different Environments[J].MATERIALS CHINA,2012,(10):047-50.[doi:10.7502/j.issn.1674-3962.2012.10.08]
点击复制

不同环境下2D70铝合金低周疲劳性能的研究()
分享到：

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2012年第10期
页码:
047-50
栏目:
研究报告
出版日期:
2012-10-24

文章信息/Info

Title:
Study on Low Cycle Fatigue Performances of 2D70 Aluminum Alloy in Different Environments
作者:
施翔晶; 马华
（洪都航空工业集团，江西 南昌，330024)
Author(s):
SHI Xiangjing;  MA Hua
（HongDu Aviation Industry Group Corporation, Nanchang 330024, China）
关键词:
低周疲劳; 湿空气; 盐雾; 盐雾+SO2
DOI:
10.7502/j.issn.1674-3962.2012.10.08
文献标志码:
A
摘要:
对2D70 Al合金在试验室空气、湿空气、盐雾及盐雾＋SO2 4种环境下进行低周疲劳试验，对比4种环境下的循环σε曲线及应变-寿命曲线，得出结论：相同应变下，2D70 Al合金随腐蚀环境增强，循环应力降低；相同应变下，2D70 Al合金在盐雾及盐雾+SO2 2种环境下低周疲劳寿命相近，并且随着腐蚀环境的增强，低周疲劳寿命降低；腐蚀环境越强，材料疲劳损伤程度越大。研究结果，为预测飞机不同环境的低周疲劳寿命及对飞机腐蚀防护及耐久性设计提供参考。
Abstract:
 Having done a series of low cycle fatigue tests to 2D70 aluminum alloy under different environments which include laboratory air, moist air , NaCl fog and NaCl fog + SO2 Compare the cyclic stress versus strain curves and the strain versus life curves in four circumstances respectively which they can be obtained by above experiments. The conclusion will be made: Under the same strain, the circulation stress of 2D70 aluminum alloy reduces along with the corrosion environment strengthens; Under the same strain, the low cycle fatigue life in NaCl fog is close to the life in NaCl fog + SO2 of 2D70 aluminum alloy , and the low fatigue life reduces along with the corrosion environment strengthens. The corrosion environment is stronger, the fatigue damage of materials is bigger. The studies provide the reference to forecast low cycle fatigue lifes of airplane under different environments, and have important meaning on corrosion protection and durable design of airplane.
更新日期/Last Update: 2012-10-25