A probabilistic model for prediction of LCF life of PM alloys

作者：Yan XJ^*; Li HY; Nie YX

来源：Aircraft Engineering and Aerospace Technology, 2004, 76(3): 286-292.

DOI：10.1108/00022660410536014

• metallurgy
• alloys
• modelling

Inclusions have been shown to be the most significant factor to decrease the low cycle fatigue (LCF) life in powder metallurgy (PM) alloys used by most of turbine discs for advanced turboengines. In this paper, effects of inclusions on PM alloys' LCF life are evaluated through the definition of initial damage value D-0 based on damage mechanics. By investigating the relationship between D-0 and characteristic dimension of inclusions, Bussac's probabilistic model is extended to consider surface and internal inclusions together.

• 出版日期2004
• 单位北京大学