【摘要】 根据奥氏体不锈钢在高温蠕变下的变形特点,提出利用EBSP通过统计∑3晶界结构来预测材料形变大小和材料剩余寿命,这为预测材料的剩余寿命提供一个新思路。利用该方法建立损伤空洞密度与∑3亚晶界结构百分数关系曲线,并对预测的结果进行验证。更多还原

【Abstract】 Based on the deformation character of austenitic steel in high temperature creep,the structure of grain boundaries of ∑3 was counted to predict the deformation degree and residual life of the material.It could provide a new method for predicting residual life of material.The relationship between damage cavity density and percent composition of ∑3 sub-grain boundary structure in material was determined and the predicted result were validated.更多还原