Effect of broaching machining parameters, residual stresses and cold work on fatigue life of Ni-based turbine disk P/M alloy at 650 °C

被引：9
作者：
Telesman, J. [1 ]
Gabb, T. P. [1 ]
Kantzos, P. T. [2 ]
Ghosn, L. J. [1 ]
机构：
[1] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA
[2] Honeywell Aerosp, Phoenix, AZ USA
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 150卷
关键词：
Broaching; Fatigue; Superalloys; Residual stress; Cold work; NICKEL-BASED SUPERALLOY; SURFACE INTEGRITY; PERFORMANCE; BEHAVIOR; LAYERS;
D O I：
10.1016/j.ijfatigue.2021.106328
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Machining parameters can influence fatigue life by altering residual stresses, cold work and surface roughness. A study was performed to examine the effect of various broaching machining parameters on high temperature fatigue lives of a nickel-based disk alloy. The influence of tool wear and broaching speed were studied and their effect on residual stresses, cold work and surface roughness was quantified. These variables were shown to have a substantial effect on fatigue lives, the failure mode type and location. The relationships between these parameters and fatigue crack initiation mechanisms are detailed. Statistical analyses evaluating these relationships are presented.
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页数：15
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