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- W3118155237 abstract "The mechanical response of Haynes 282, a wrought gamma prime strengthened nickel based superalloy, is tailored by using both a cold deformation processing and a post straining heat treatment including a two step aging. In this work, the effect of the applied cold pre deformation by conventional equal speed rolling ESR or differential speed rolling DSR methods on the aging behavior of Haynes 282 superalloy, is examined for the first time. For this reason, the solid solution annealed alloy was subjected to 50 pct. nominal cold thickness reduction by either ESR or DSR methods, followed by a two step heat treatment at 1010C for 2h and 780C for 8h. The material structural evolution on each processing step was characterized by using scanning electron microscopy, electron backscatter diffraction and transmission electron microscopy methods. Corresponding mechanical properties were examined in static tensile tests performed on non standard miniaturized specimens. It was found that, the introduction of a shear strain by rolls speed differentiation in the cold rolling process results in a more efficient strain hardening of the alloy in the as deformed state and an intensive grain refinement upon the post deformation annealing. Consequently, the DSR provides a higher room temperature mechanical strength obtained in both aging steps, as compared to the non deformed and conventionally cold rolled counterparts. Furthermore, noticeable differences in terms of stability of crystallographic orientations for ESRed or DSRed and heat treated alloy, were noted." @default.
- W3118155237 created "2021-01-05" @default.
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- W3118155237 date "2020-12-18" @default.
- W3118155237 modified "2023-09-23" @default.
- W3118155237 title "Aging behavior of Haynes 282 wrought nickel superalloy subjected to a cold pre-deformation by differential speed rolling" @default.
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