Influence of Cu/Mg ratio and content on heat-resistance of Al–Cu–Mg alloys oleh Huabing Yang, Yunteng Liu, Ying Li, Suqing Zhang, Jianhua Wu, Huan Yu, Hongtao Liu, Baichang Ma, Haihua Zhuang, Xuansheng Feng, Peng Zhang, Jixue Zhou, Xiangfa Liu