A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates
Precipitates are the primary source of strength for the Al-Mg-Si alloy. Aluminum alloy in the peak-aged state mainly contains β” and β’ precipitates. Most of the literature has only considered the strengthening effect of β”. Here, we develop a single-crystal intensity model including both precipitat...
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2023-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/22/7183 |
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| author | Xiaoyu Zheng Qi Huang Hong Mao Kai Li Namin Xiao Xingwu Li Yong Du Yuling Liu Yi Kong |
| author_facet | Xiaoyu Zheng Qi Huang Hong Mao Kai Li Namin Xiao Xingwu Li Yong Du Yuling Liu Yi Kong |
| author_sort | Xiaoyu Zheng |
| collection | DOAJ |
| description | Precipitates are the primary source of strength for the Al-Mg-Si alloy. Aluminum alloy in the peak-aged state mainly contains β” and β’ precipitates. Most of the literature has only considered the strengthening effect of β”. Here, we develop a single-crystal intensity model including both precipitate enhancement effects for the first time. This model was subsequently implemented into a crystal plastic finite-element method to model the uniaxial tensile process of a polycrystalline aggregate model of Al-Mg-Si alloy. The simulation results for uniaxial stretching are in good agreement with the experimental results, confirming that the constitutive parameters used for the single-crystal strength model with two precipitates are based on realistic physical implications. Furthermore, by comparing the uniaxial tensile simulation results of a peak-aged alloy considering the actual precipitated phase composition of the alloy with those assuming that the precipitated phase is only the β” phase, the predicted tensile strength of the former is around 5.65% lower than that of the latter, suggesting that the two kinds of precipitation should be separately considered when simulating the mechanical response of Al-Mg-Si alloy. It is highly expected that the present simulation strategy is not limited to Al-Mg-Si alloys, and it can be equally applied to the other age-enhanced alloys. |
| first_indexed | 2024-03-09T16:39:03Z |
| format | Article |
| id | doaj.art-54f09b8c79b642a8a5e844c897624315 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T16:39:03Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-54f09b8c79b642a8a5e844c8976243152023-11-24T14:53:42ZengMDPI AGMaterials1996-19442023-11-011622718310.3390/ma16227183A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ PrecipitatesXiaoyu Zheng0Qi Huang1Hong Mao2Kai Li3Namin Xiao4Xingwu Li5Yong Du6Yuling Liu7Yi Kong8State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaBeijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing 100095, ChinaBeijing Institute of Aeronautical Materials, Aero Engine Corporation of China, Beijing 100095, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaPrecipitates are the primary source of strength for the Al-Mg-Si alloy. Aluminum alloy in the peak-aged state mainly contains β” and β’ precipitates. Most of the literature has only considered the strengthening effect of β”. Here, we develop a single-crystal intensity model including both precipitate enhancement effects for the first time. This model was subsequently implemented into a crystal plastic finite-element method to model the uniaxial tensile process of a polycrystalline aggregate model of Al-Mg-Si alloy. The simulation results for uniaxial stretching are in good agreement with the experimental results, confirming that the constitutive parameters used for the single-crystal strength model with two precipitates are based on realistic physical implications. Furthermore, by comparing the uniaxial tensile simulation results of a peak-aged alloy considering the actual precipitated phase composition of the alloy with those assuming that the precipitated phase is only the β” phase, the predicted tensile strength of the former is around 5.65% lower than that of the latter, suggesting that the two kinds of precipitation should be separately considered when simulating the mechanical response of Al-Mg-Si alloy. It is highly expected that the present simulation strategy is not limited to Al-Mg-Si alloys, and it can be equally applied to the other age-enhanced alloys.https://www.mdpi.com/1996-1944/16/22/7183aluminum alloysprecipitateshomogenizationcrystal plasticity finite element methodcrystal orientation |
| spellingShingle | Xiaoyu Zheng Qi Huang Hong Mao Kai Li Namin Xiao Xingwu Li Yong Du Yuling Liu Yi Kong A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates Materials aluminum alloys precipitates homogenization crystal plasticity finite element method crystal orientation |
| title | A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates |
| title_full | A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates |
| title_fullStr | A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates |
| title_full_unstemmed | A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates |
| title_short | A Yield Stress and Work Hardening Model of Al-Mg-Si Alloy Considering the Strengthening Effect of β” and β’ Precipitates |
| title_sort | yield stress and work hardening model of al mg si alloy considering the strengthening effect of β and β precipitates |
| topic | aluminum alloys precipitates homogenization crystal plasticity finite element method crystal orientation |
| url | https://www.mdpi.com/1996-1944/16/22/7183 |
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