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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 1,620 - 1,630 (11page)
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초록· 키워드
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Non-spherical precipitates are the main strengthening source of the age-hardenable aluminum alloys. In the majority of theprecipitation hardening models presented so far, the simple spherical shape has been assumed. Moreover, the models whichconsidered the actual shape of the precipitates, are derived based on the simple assumption of steady-state diffusion problemsolutions. In the present study, the classical Kampmann and Wagner numerical model of spherical precipitates is extendedto model the kinetics of spheroidal shape precipitates evolution during the aging treatment of Al alloys. To do so, a newrate law is proposed using a similarity solution of the transient diffusion problem around the spheroidal precipitates, withdifferent aspect ratios, and moving boundaries. Moreover, a modified age-hardening model which considered the effects ofprecipitate shape, size and volume fraction, is used to predict the variation of the alloy hardness during the aging process. Theaccuracy of the proposed model is shown by comparing the predicted features of precipitates, and hardness evolution withthe published experimental data. Also, the validity of the existing approximate solutions for the aging problem is discussed.
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참고문헌 (42)
참고문헌 신청
P. Rambabu / 2017 / Aluminium Alloys for Aerospace Applications. Aerospace Materials and Material Technologies / Springer :29~52
Kai Wen / 2018 / Effect of Various Retrogression Regimes on Aging Behavior and Precipitates Characterization of a High Zn-Containing Al–Zn–Mg–Cu Alloy / Metals and Materials International 24(3):537~548
N. Anjabin / 2013 / Mater. Sci. Technol 29:968
K. Wen / 2019 / Met. Mater. Int
Nozar Anjabin / 2019 / Modeling the Anisotropic Flow Behavior of Precipitate‑Hardened Al–Cu Alloys During Plane Strain Compression / Metals and Materials International 25(1):159~167
Kai Wen / 2018 / Effect of Various Retrogression Regimes on Aging Behavior and Precipitates Characterization of a High Zn-Containing Al–Zn–Mg–Cu Alloy / Metals and Materials International 24(3):537~548
N. Anjabin / 2013 / Mater. Sci. Technol 29:968
K. Wen / 2019 / Met. Mater. Int
Nozar Anjabin / 2019 / Modeling the Anisotropic Flow Behavior of Precipitate‑Hardened Al–Cu Alloys During Plane Strain Compression / Metals and Materials International 25(1):159~167
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