Jie Chen, Zhijun Wang, H. Zhang, Qingxiang Yang, Hongtao Zhang, Ruo-Xun Zhai
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引用次数: 0
Abstract
In this study, the working environment of the GH4720Li alloy was simulated using a dynamic compression test with a strain rate range of 0.01–4000 s-1 and a temperature range of 20–1000 °C, and its dynamic mechanical properties under operating conditions were studied. Based on the signifi cant volume of the test data, it was observed that there was an abnormal stress peak in the GH4720Li alloy owing to third strain aging. The third strain aging behavior is an irregular bell-shaped stress curve. In addition, the effects of the temperature and strain rate on the bell-shaped stress curve were studied. With an increase in the strain rate, the bell-shaped stress curve shifted to the high-temperature zone, and the stress peak and temperature width of the bell-shaped curve gradually decreased. Finally, the change mechanism of the strain rate effect on the bell-shaped stress curve is explained from a microscopic point of view.
期刊介绍：
The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.
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