Effects of Cold Deformation Temperature on the Aging Behavior of a Ni-W-Co-Ta Medium-Heavy Alloy
Li, Yong; Xiong, Yi; Zhang, Xin; Tang, Jin-jin; Han, Shun; Ren, Feng-zhang; Wang, Chun-xu; Wang, Shu-bo (2023-08-23)
Springer
23.08.2023
Li, Y., Xiong, Y., Zhang, X. et al. Effects of Cold Deformation Temperature on the Aging Behavior of a Ni-W-Co-Ta Medium-Heavy Alloy. J. of Materi Eng and Perform 33, 9600–9611 (2024). https://doi.org/10.1007/s11665-023-08633-7
https://rightsstatements.org/vocab/InC/1.0/
© ASM International. This is a post-peer-review, pre-copyedit version of an article published in Journal of Materials Engineering and Performance. The final authenticated version is available online at: https://doi.org/10.1007/s11665-023-08633-7
https://rightsstatements.org/vocab/InC/1.0/
© ASM International. This is a post-peer-review, pre-copyedit version of an article published in Journal of Materials Engineering and Performance. The final authenticated version is available online at: https://doi.org/10.1007/s11665-023-08633-7
https://rightsstatements.org/vocab/InC/1.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202410246451
https://urn.fi/URN:NBN:fi:oulu-202410246451
Tiivistelmä
Abstract
An aging treatment of 16 h at different temperatures (650-800 °C) was carried out to medium-heavy alloys with 90% deformation degree after room temperature rolling and cryorolling. The effects of the aging temperatures on the mechanical properties and microstructure of the two cold-rolled medium-heavy alloys were studied with tensile testing machine and microhardness tester, scanning electron microscopy, transmission electron microscopy, x-ray diffractometer. The results showed that the aging process was accompanied by static recovery and recrystallization, and the degree of static recrystallization in the cryorolling specimens was severer than that of the specimens rolled at room temperature at the same aging temperature. The precipitation of the Ni4W phase was observed during the aging process, and the number of precipitated phases in the cryorolled specimens was significantly higher than that in those rolled at room temperature, and the grain size was significantly smaller than that in specimens rolled at room temperature. The number of precipitated phases in the two cold-rolled specimens increased and the corresponding size also became larger with the aging temperature increasing. However, the peak aging temperature of the two cold-rolled specimens was different, and the peak aging temperature of the cryorolled specimen (650 °C) was significantly lower than that of the specimen rolled at room temperature (700 °C), and the corresponding mechanical properties were more excellent than those of the specimen rolled at room temperature. The fracture mode of both specimens was mixed ductile-brittle fractures.
An aging treatment of 16 h at different temperatures (650-800 °C) was carried out to medium-heavy alloys with 90% deformation degree after room temperature rolling and cryorolling. The effects of the aging temperatures on the mechanical properties and microstructure of the two cold-rolled medium-heavy alloys were studied with tensile testing machine and microhardness tester, scanning electron microscopy, transmission electron microscopy, x-ray diffractometer. The results showed that the aging process was accompanied by static recovery and recrystallization, and the degree of static recrystallization in the cryorolling specimens was severer than that of the specimens rolled at room temperature at the same aging temperature. The precipitation of the Ni4W phase was observed during the aging process, and the number of precipitated phases in the cryorolled specimens was significantly higher than that in those rolled at room temperature, and the grain size was significantly smaller than that in specimens rolled at room temperature. The number of precipitated phases in the two cold-rolled specimens increased and the corresponding size also became larger with the aging temperature increasing. However, the peak aging temperature of the two cold-rolled specimens was different, and the peak aging temperature of the cryorolled specimen (650 °C) was significantly lower than that of the specimen rolled at room temperature (700 °C), and the corresponding mechanical properties were more excellent than those of the specimen rolled at room temperature. The fracture mode of both specimens was mixed ductile-brittle fractures.
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