SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY

Abstract

Abstract: A rapidly solidified microcrystalline Al-Li-Cu-Mg-Zr alloy and its superplasicity have been investigated.An optimum tensile elongation of 585% was obtained at 540℃ and strain rate 1.67×10~(-2)s~(-1).The superplastic Al-Li alloy is manufaetured using thermomechanical pro- cessing:solution,overaging,warm rolling and recrystallization.Microstructural changes in thermomechanical processing and cavitation occurred during superplastic deformation have been observed.The superplastic failure of alloy may be caused mainly by nucleation and growth of cavities as well as the linkage around grains.

Key words: superplasticity, Al-Li alloy, rapid solidification, thermomechanical processing

MANG Weishi WANG Guozhi ZHANG Yongchang HU Zhuangqi SHI Changxu Institute of Metal Research,Academia Sinica,Shenyang,China Yongchang Associate Professor,Institute of Metal Research,Academia Sinica,Shenyang 110015,China. SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1990, 3(4): 236-242.

[1]	Guohua Wu, Chunchang Shi, Liang Zhang, Wencai Liu, Antao Chen, Wenjiang Ding. Effect of Different Ageing Processes on Microstructure and Mechanical Properties of Cast Al-3Li-2Cu-0.2Zr Alloy [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1243-1251.
[2]	Mohamad Ebrahimnia, Yujiang Xie, Changtai Chi. Effect of laser power and deposition environment on the microstructure and properties of direct laser metal-deposited 12CrNi2 steel [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(4): 528-538.
[3]	Wen Wang, Peng Han, Pai Peng, Ting Zhang, Qiang Liu, Sheng-Nan Yuan, Li-Ying Huang, Hai-Liang Yu, Ke Qiao, Kuai-She Wang. Friction Stir Processing of Magnesium Alloys: A Review [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(1): 43-57.
[4]	Tian-Long Zhang, Toko Tokunaga, Munekazu Ohno, Mi-Lin Zhang, Kiyotaka Matsuura. Fabrication of Al-Coated Mg-Li Alloy Sheet and Investigation of Its Properties [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(2): 169-177.
[5]	Z. D. Fan, D. Wang, C. Liu, G. Zhang, J. Shen, L. H. Lou, J. Zhang. Low-Cycle Fatigue Properties of Nickel-Based Superalloys Processed by High-Gradient Directional Solidification [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(9): 878-886.
[6]	Ren-Guo Guan, Di Tie. A Review on Grain Refinement of Aluminum Alloys: Progresses, Challenges and Prospects [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(5): 409-432.
[7]	Jin-Feng Li,Zhi-Hao Ye,Dan-Yang Liu,Yong-Lai Chen,Xu-Hu Zhang,Xiu-Zhi Xu,Zi-Qiao Zheng. Influence of Pre-deformation on Aging Precipitation Behavior of Three Al-Cu-Li Alloys [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(2): 133-145.
[8]	Gang Wang, Zbigniew H. Stachurski. A Concordant Shift Model for Flow in Bulk Metallic Glasses [J]. Acta Metallurgica Sinica (English Letters), 2016, 29(2): 134-139.
[9]	Qi-Hao Chen,San-Bao Lin,Chun-Li Yang,Cheng-Lei Fan,Hong-Liang Ge. Effect of Ultrasound on Heterogeneous Nucleation in TIG Welding of Al-Li Alloy [J]. Acta Metallurgica Sinica (English Letters), 2016, 29(12): 1081-1088.
[10]	Hui-Jun Kang, Zhong-Lue Hu, Xiao-Xia Gao, Zong-Ning Chen, Yi-Ping Lu, Jin-Chuan Jie, Jing-Jie Guo. 3D Morphology and Formation Process of the Icosahedral Quasicrystalline Phase in Rapidly Solidified Al-Mn Alloy [J]. Acta Metallurgica Sinica (English Letters), 2016, 29(1): 28-31.
[11]	Mohsen Hajizamani, Mostafa Alizadeh, Seyed Ahmad Jenabali-Jahromi. Microstructure Modification of Powder Compact of Al-Zn-Mg Nanostructured Alloy by a Semisolid Thermomechanical Processing [J]. Acta Metallurgica Sinica (English Letters), 2016, 29(1): 39-45.
[12]	Xiao Jin, Bao-Qin Fu, Cheng-Lu Zhang, Wei Liu. Study of Dislocation Boundary Structure in Al-Li Alloy During Bending [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(9): 1149-1155.
[13]	Juan Ma, De-Sheng Yan, Li-Jian Rong, Yi-Yi Li. Effect of Aging on the Microstructure and Mechanical Properties of 1460 Alloy [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(4): 454-459.
[14]	Yousef Mazaheri, Ahmad Kermanpur, Abbas Najafizadeh, Navid Saeidi. Development of a New Ultrafine/Nano Ferrite-Carbide Microstructure by Thermomechanical Processing [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(2): 249-253.
[15]	Lin Geng, Lujun Huang. High Temperature Properties of Discontinuously Reinforced Titanium Matrix Composites: A Review [J]. Acta Metallurgica Sinica (English Letters), 2014, 27(5): 787-797.

SUPERPLASTICITY OF A RAPIDLY SOLIDIFIED AI-Li ALLOY

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments