Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy
Al-Li alloys suffer from a narrow processing window. The hot deformation behavior of the ramp heating homogenized 2195 Al-Li alloy was investigated by hot compression test in the temperature range of 300–500 °C and strain rate range of 0.01–10 s−1, and the strain compensated Arrhenius constitutive r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523007815 |
| _version_ | 1797647880100511744 |
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| author | Xiaowei Wang Guoqun Zhao Lu Sun Yuelin Wang Shaoqiang Xu Zhengfeng Lv |
| author_facet | Xiaowei Wang Guoqun Zhao Lu Sun Yuelin Wang Shaoqiang Xu Zhengfeng Lv |
| author_sort | Xiaowei Wang |
| collection | DOAJ |
| description | Al-Li alloys suffer from a narrow processing window. The hot deformation behavior of the ramp heating homogenized 2195 Al-Li alloy was investigated by hot compression test in the temperature range of 300–500 °C and strain rate range of 0.01–10 s−1, and the strain compensated Arrhenius constitutive relationship model and processing map of the alloy were established. The laws of Zener-Hollomon parameters on the age-hardening response and quenching sensitivity of the deformed alloy were analyzed. The quenching precipitation mechanism of the deformed alloy were revealed. The results showed that the hardness of the aged alloy tends to increase first and then decrease with increasing Z parameter, while the quenching sensitivity tends to decrease first and then increase. The quench-induced phases are precipitated under the induction of incoherent Al3Zr dispersoids within recrystallized grains. The boundary angle would affect the quenching precipitation behavior. It was also found that the types and amounts of second phases are significantly different between the homogenized and hot-deformed samples under slow cooling rate. The ramp heating homogenized 2195 Al-Li alloy after hot deformation at temperatures of 455–500 °C and strain rates below 1 s−1 possesses a lower flow stress, higher age-hardening response and smaller quenching sensitivity. |
| first_indexed | 2024-03-11T15:24:06Z |
| format | Article |
| id | doaj.art-423bbe77f3e24ca7a541a540f8c16e0e |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-11T15:24:06Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-423bbe77f3e24ca7a541a540f8c16e0e2023-10-28T05:06:39ZengElsevierMaterials & Design0264-12752023-10-01234112366Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloyXiaowei Wang0Guoqun Zhao1Lu Sun2Yuelin Wang3Shaoqiang Xu4Zhengfeng Lv5Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, PR China; Corresponding authors.Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, PR China; Corresponding authors.Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, Shandong 250061, PR ChinaWQ&UCAS (Binzhou) Industrialization Research Institute Co., Ltd, Binzhou, Shandong 256212, PR ChinaShandong Nanshan Aluminum Co., Ltd., Longkou, Shandong 264000, PR ChinaAl-Li alloys suffer from a narrow processing window. The hot deformation behavior of the ramp heating homogenized 2195 Al-Li alloy was investigated by hot compression test in the temperature range of 300–500 °C and strain rate range of 0.01–10 s−1, and the strain compensated Arrhenius constitutive relationship model and processing map of the alloy were established. The laws of Zener-Hollomon parameters on the age-hardening response and quenching sensitivity of the deformed alloy were analyzed. The quenching precipitation mechanism of the deformed alloy were revealed. The results showed that the hardness of the aged alloy tends to increase first and then decrease with increasing Z parameter, while the quenching sensitivity tends to decrease first and then increase. The quench-induced phases are precipitated under the induction of incoherent Al3Zr dispersoids within recrystallized grains. The boundary angle would affect the quenching precipitation behavior. It was also found that the types and amounts of second phases are significantly different between the homogenized and hot-deformed samples under slow cooling rate. The ramp heating homogenized 2195 Al-Li alloy after hot deformation at temperatures of 455–500 °C and strain rates below 1 s−1 possesses a lower flow stress, higher age-hardening response and smaller quenching sensitivity.http://www.sciencedirect.com/science/article/pii/S0264127523007815Al-Li alloyProcessing mapMicrostructureMechanical propertiesQuenching precipitation mechanismQuenching sensitivity |
| spellingShingle | Xiaowei Wang Guoqun Zhao Lu Sun Yuelin Wang Shaoqiang Xu Zhengfeng Lv Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy Materials & Design Al-Li alloy Processing map Microstructure Mechanical properties Quenching precipitation mechanism Quenching sensitivity |
| title | Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy |
| title_full | Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy |
| title_fullStr | Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy |
| title_full_unstemmed | Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy |
| title_short | Investigation on hot deformation behavior and quenching precipitation mechanism of 2195 Al-Li alloy |
| title_sort | investigation on hot deformation behavior and quenching precipitation mechanism of 2195 al li alloy |
| topic | Al-Li alloy Processing map Microstructure Mechanical properties Quenching precipitation mechanism Quenching sensitivity |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523007815 |
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