SLIDE 1
CONSULTING
CONSULTING
AVIC Beijing Institute of Aeronautical Materials May 25th, 2012
2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 3.4 3.5 1 10 100 1000 10000
Length of service simulation at 400°C [h] H
CO [A/cm]
CONSULTING May 25 th , 2012 AVIC Beijing Institute of Aeronautical - - PowerPoint PPT Presentation
CONSULTING May 25 th , 2012 AVIC Beijing Institute of Aeronautical - - PowerPoint PPT Presentation
MATERIAL DEGRADATION CONSULTING May 25 th , 2012 AVIC Beijing Institute of Aeronautical Materials MATERIAL DEGRADATION CONSULTING Ageing Phenomena: Thermal Ageing H CO [A/cm] HV 10 250 3.5 3.4 240 3.3 230 3.2 3.1 220 3 210 2.9 2.8 200
SLIDE 2
SLIDE 3
CONSULTING
AVIC Beijing Institute of Aeronautical Materials May 25th, 2012
MATERIAL DEGRADATION
Magnetizing yoke Sample Hall probe + coil TENSILE TEST MECHANICS LOAD MEASUREMENT UNIT SIGNAL EVALUATION PC: Modular Measurement System (MMS) LOAD ADJUSTMENT DATA ACQUISITION EVALUATION
s s EXPERIMENT
SLIDE 4
CONSULTING
AVIC Beijing Institute of Aeronautical Materials May 25th, 2012
MATERIAL DEGRADATION
Thermally-induced embrittlement of WB 36 steel
Combined Barkhausen noise, analysis of upper harmonics and eddy current analysis Prediction of the Vickers hardness for WB 36
155 165 175 185 195 205 215 155 165 175 185 195 205 215 actual HV 5 predicted HV 5 (3MA) calibration set test set
SLIDE 5
CONSULTING
AVIC Beijing Institute of Aeronautical Materials May 25th, 2012
MATERIAL DEGRADATION
F
X6 CrNiTi 18 10
log N/NB
1 2 3 4 5 1 2 3 4
Fractal topography-analysis
1 dislocation generation Microstructure local slip and rotation 2 ≅ 3D domains 3 Cell structure, slip bands Mesostructure I 4 multiple slip bands Mesostructure II ≅ 2D domains 5 End of life Macroscopic cracking
SLIDE 6
CONSULTING
AVIC Beijing Institute of Aeronautical Materials May 25th, 2012
MATERIAL DEGRADATION
SLIDE 7
CONSULTING