摘要
本文通过实验研究了ＬＹ—１２硬铝合金在单向拉伸疲劳载荷下表面裂纹形状的变化规律，由实验数据处理得到了适用于ＬＹ—１２硬铝合金材料疲劳寿命计算的关系式。研究表明，拉伸疲劳时表面裂纹扩展速率可用Ｐａｒｉｓ公式描述。
It's by experiment that this article studies the changing principles of the Surface flaw shapes of the LY-12 hard aluminium alloy subjected to tension fatigue load,whose computing formula advanced by trectment of the experiment data con be suitable to calculate the fatigue life of the LY-12 hard aluminium alloy matezials. And it is indicated that,through experiment, the surface flaw exterfion rate under to be subjected to tension fatigue can be described with the Paris Formula.
出处
《广西工学院学报》
CAS
1994年第2期29-36,共8页
Journal of Guangxi University of Technology
关键词
铝合金
表面裂纹
裂纹扩展
速率
Aluminiun alloy
Surface flaw shape
Extension rate.
