摘要
对316L不锈钢进行了大量的单轴高周次棘轮和蠕变试验,讨论了在长达20000周应力循环中材料的棘轮变形演化与饱和棘轮变形的规律,以及棘轮幅值应力对峰值控制规律的影响;基于材料棘轮效应和蠕变迁为之间相互联系的系统研究提示出:材料的棘轮变形本质上源于应力循环过程中材料的黏塑性。
A series of uniaxial ratchet and creep tests on 316L stainless steel were performed, in the 20 000 stress cycles, the evolution rule of ratchet deformation and the propirty of saturated ratchet strain of this material were discussed. And the phenomenon that the amplitude stress affects the peak stress dominating-rule was investigated. The results from research on the relationship between ratchet and creep behavior of the material show htat the ratchet deformation under cyclic stressing is essentially caused by vise-plastic of the material.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2007年第3期567-573,共7页
Acta Aeronautica et Astronautica Sinica
关键词
棘轮变形
棘轮安定
长周次循环
蠕变
黏塑性
316L不锈钢
ratehetting deformation
ratchet shakedown
large number cycle
creep
vise-plastic
316L stain less steel