Two Step and Regression Re-aging Heat Treatment of Al-5.2%Zn-2.3%Mg Alloy Applied in Cigarette Making Machines

Technical Center for China Tobacco Yunnan Industrial Co., Ltd., Kunming 650231, P. R. China. Heavy Industry Engineering Center of China Ministry of Education, Taiyuan University of Science and Technology, Taiyuan 030024, P. R. China. Honghe Cigarette Factory, Hongyunhonghe Tobacco (Group) Co. Ltd., Honghe 652399, China. Qvjing Cigarette Factory, Hongyunhonghe Tobacco (Group) Co. Ltd., Qujing 655001, Yunnan, China. Fushun Branch of China Coal Research Institute, Fushun 113001, P. R. China. Measurement Technology and Instrumentation Key Laboratory of Hebei Province, Yanshan University, Qinhuangdao 066004, P. R. China. Design and Research Center, AVIC Commercial Aircraft Engine Co. Ltd. Shanghai 200241, P. R. China.