A DCPD TECHNIQUE FOR LOCALIZED CREEP DAMAGE IN NOTCHED BARS

作     者：Z.D.Wang Y.Qiao B.S.Zhou D.O.Wu 

作者机构：East China Univ of Science and Technology Shanghai China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1998年第11卷第6期

页      面：456-462页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：creep damage mechanics notched round bar creep damage measurement 

摘      要：Localized creep damage in a notched round specimen has been investigated in this paper based on the creep damage mechanics and the DCPD technique. Expressions of creep damage equivalent stress under multi-axial state are given to describe the validity for localized damage in ductile materials. A DCPD method is introduced into the measurement of local creep damage near the tip of V-type notch of round bar. The technique with instrument configuration, selection of probe position and measuring calibration is also presented in the paper. Some results of creep damage estimation are shown on 2.25Cr-1Mo at 550℃.