کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1571128 | 1514400 | 2014 | 6 صفحه PDF | دانلود رایگان |
• The microstructure of PWA1497 superalloy was examined using FIB–SEM tomography.
• In case of modern single crystal superalloys, measurements of AA are adequate for VV.
• During creep the γ channel width increases from 65 to 193 nm for ruptured specimen.
• Tomography is a useful technique for quantitative studies of material microstructure.
The effect of creep deformation on the microstructure of the PWA 1497 single crystal Ni-base superalloy developed for turbine blade applications was investigated. The aim of the present study was to characterize quantitatively a superalloy microstructure and subsequent development of rafted γ′ precipitates in the PWA 1497 during creep deformation at 982 °C and 248 MPa up to rupture. The PWA1497 microstructure was characterized by scanning electron microscopy and FIB–SEM electron tomography. The 3D reconstruction of the PWA1497 microstructure is presented and discussed.
Journal: Materials Characterization - Volume 87, January 2014, Pages 143–148