摘要
通过不同直径圆角铝合金在喷丸和未喷丸下的疲劳对比试验,研究了圆角半径对疲劳寿命的影响。结果表明:圆角喷丸强化试验件的疲劳寿命高于未喷丸的试验件,但分散性增大;圆角半径越大,喷丸件寿命分散性越大。
Fatigue tests were carried out on ＂shot peened＂ and ＂as-prepared＂ specimens with different fillets to compare their fatigue lives.The effects of fillet radiu on fatigue life were studied.The experimental and analytical results show that the fatigue life of shot peened specimens is improved remarkably comparing with that of ＂as prepared＂ specimens.However,the dispersity of the fatigue life associated with the shot peened fillets is increased comparing with that associated with the ＂as-prepared＂ specimen.Meanwhile,the dispersity increases with the increase of fillet radius.
出处
《热加工工艺》
CSCD
北大核心
2012年第4期150-152,共3页
Hot Working Technology
基金
高等学校学科创新引智计划项目(B07050)
关键词
圆角
喷丸
疲劳寿命
fillet
shot peening
fatigue life
