Please wait a minute...
Chin. Phys. B, 2009, Vol. 18(8): 3500-3507    DOI: 10.1088/1674-1056/18/8/061
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Influence of solute cloud and precipitates on spatiotemporal characteristics of Portevin-Le Chatelier effect in A2024 aluminum alloys

Sun Liang(孙亮), Zhang Qing-Chuan(张青川), and Cao Peng-Tao(曹鹏涛)
CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China
Abstract  In this paper, solute concentration and precipitate content in A2024 aluminum alloy are adjusted by solution treatment (ST) at different temperatures and tensile experiments on these treated specimens are carried out. It is found that the temperature of solution treatment (ST temperature) has a remarkable influence on the amplitude of the serrated flow and the propagation characteristics of shear bands. These results are due to the effects of solute atoms and precipitates on dynamic strain aging (DSA). When ST temperature is higher than 300 ℃, solute concentration is relatively high and solute cloud is a key factor of DSA. When ST temperature is lower than 300 ℃, precipitate content is relatively high and the mechanism of DSA is determined by precipitates.
Keywords:  aluminum alloy      Portevin-Le Chatelier effect      dynamic strain aging      solution treatment      precipitate particle  
Received:  12 October 2008      Revised:  01 December 2008      Accepted manuscript online: 
PACS:  81.40.Lm (Deformation, plasticity, and creep)  
  62.20.F- (Deformation and plasticity)  
  64.75.-g (Phase equilibria)  
  81.40.Cd (Solid solution hardening, precipitation hardening, and dispersion hardening; aging)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10872189 and 10732080).

Cite this article: 

Sun Liang(孙亮), Zhang Qing-Chuan(张青川), and Cao Peng-Tao(曹鹏涛) Influence of solute cloud and precipitates on spatiotemporal characteristics of Portevin-Le Chatelier effect in A2024 aluminum alloys 2009 Chin. Phys. B 18 3500

[1] Effect of the target positions on the rapid identification of aluminum alloys by using filament-induced breakdown spectroscopy combined with machine learning
Xiaoguang Li(李晓光), Xuetong Lu(陆雪童), Yong Zhang(张勇),Shaozhong Song(宋少忠), Zuoqiang Hao(郝作强), and Xun Gao(高勋). Chin. Phys. B, 2022, 31(5): 054212.
[2] First-principles calculations of solute-vacancy interactions in aluminum
Sha-Sha Zhang(张莎莎), Zheng-Jun Yao(姚正军), Xiang-Shan Kong(孔祥山), Liang Chen(陈良), Jing-Yu Qin(秦敬玉). Chin. Phys. B, 2020, 29(6): 066103.
[3] Anti-oxidation characteristics of Cr-coating on surface of Ti-45Al-8.5Nb alloy by plasma surface metallurgy technique
Bing Zhou(周兵), Ya-Rong Wang(王亚榕), Ke Zheng(郑可), Yong Ma(马永), Yong-Sheng Wang(王永胜), Sheng-Wang Yu(于盛旺), and Yu-Cheng Wu(吴玉程). Chin. Phys. B, 2020, 29(12): 126101.
[4] Thermomechanical response of aluminum alloys under the combined action of tensile loading and laser irradiations
Mohsan Jelani, Zewen Li(李泽文), Zhonghua Shen(沈中华), Maryam Sardar. Chin. Phys. B, 2018, 27(3): 037901.
[5] Tensile properties and microstructure of 2024 aluminum alloy subjected to the high magnetic field and external stress
Gui-Rong Li(李桂荣), Fei Xue(薛飞), Hong-Ming Wang(王宏明), Rui Zheng(郑瑞), Yi Zhu(朱弋), Qiang-Ze Chu(储强泽), Jiang-Feng Cheng(程江峰). Chin. Phys. B, 2016, 25(10): 106201.
[6] Effect of solute concentration on the serrated flow in solution-treated Al--4%Cu alloys
Jiang Hui-Feng (江慧丰), Zhang Qing-Chuan (张青川), Sun Liang (孙亮), Wu Xiao-Ping (伍小平). Chin. Phys. B, 2006, 15(5): 1051-1054.
[7] Deformation measurements of three types of Portevin--Le Chatelier bands
Xiang Guo-Fu (项国富), Zhang Qing-Chuan (张青川), Liu Hao-Wen (刘颢文), Jiang Hui-Feng (江慧丰), Wu Xiao-Ping (伍小平). Chin. Phys. B, 2006, 15(10): 2378-2384.
No Suggested Reading articles found!