Two Step and Regression Re-aging Heat Treatment of Al-5.2%Zn-2.3%Mg Alloy Applied in Cigarette Making Machines
Hao Wang *
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Jianbo Zhan
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Zhenhua Yu
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Jiang Yu
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Yafeng Ji
Heavy Industry Engineering Center of China Ministry of Education, Taiyuan University of Science and Technology, Taiyuan 030024, P. R. China
Tao Wang
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Yao Yu
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Muyan Li
Honghe Cigarette Factory, Hongyunhonghe Tobacco (Group) Co. Ltd., Honghe 652399, China
Danfeng He
Qvjing Cigarette Factory, Hongyunhonghe Tobacco (Group) Co. Ltd., Qujing 655001, Yunnan, China
Hongkui Zhang
Fushun Branch of China Coal Research Institute, Fushun 113001, P. R. China
Rongrong Fu
Measurement Technology and Instrumentation Key Laboratory of Hebei Province, Yanshan University, Qinhuangdao 066004, P. R. China
Na Zan
Design and Research Center, AVIC Commercial Aircraft Engine Co. Ltd. Shanghai 200241, P. R. China
Wei Ding
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Liang Cheng
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Baoshan Yue
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Han Zheng
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Zhiqiang Li
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
Li Gao
Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China
*Author to whom correspondence should be addressed.
Abstract
Deformation scheme and pre-heat treatment of Al-5.2%Zn-2.3%Mg aluminum alloy is chosen, homogenizing annealing at 415℃ for 1h, cooling to 200℃ in furnace at a cooling rate of less than 30℃/ h and then cooling to room temperature to make Al-5.2%Zn-2.3%Mg aluminum alloy annealed fully. Heat treatment tests of Al-5.2%Zn-2.3%Mg aluminum alloy mainly consisting of rolling and aging were conducted, and the optimum peak aging mechanism is 120℃/20 h. Through comparison of microstructure and mechanical properties with different deformation and aging mechanism, effect of deformation rates and aging mechanism on properties of Al-5.2%Zn-2.3%Mg aluminum alloy was analyzed, and optimum double-peak aging mechanism is 110℃/7h+170℃/16 h. Orthogonal experiments were carried out to analyze mechanical and electrical properties of tested materials before and after deformation, and effect of aging mechanism on Al-5.2%Zn-2.3%Mg Al alloy was analyzed, and the optimum regression aging mechanism is 120℃/20 h+170℃/40 min+120℃/20 h.
Keywords: Al-5.2%Zn-2.3%Mg alloy, heat treatment, aging, mechanical properties, cigarette making machine