祝贞凤,李辉,史春丽,孙杰

• 1:烟台南山学院工学院材料系
• 2:山东南山科学技术研究院
• 3:山东南山铝业股份有限公司

摘要(Abstract)：

在7150铝合金中添加质量分数为0.1%的Ce元素,测试其在添加Ce前后的硬度和室温力学性能,并利用光学显微镜、扫描电镜、透射电镜观察合金的微观组织,分析微量Ce的添加对7150合金显微组织和力学性能的影响。结果表明:添加0.1%Ce,对合金晶粒细化效果显著,铸态平均晶粒尺寸由100μm降为10μm;添加Ce元素可以阻碍固溶过程中的再结晶,形成亚结构强化,强化了晶界,并且在时效处理后,强化相以棒状亚稳η'相为主,提高了7150铝合金的强度与塑性。

关键词(KeyWords)： 显微组织;稀土元素Ce;晶粒细化;亚晶界;再结晶

Abstract:

Keywords:

基金项目(Foundation): 烟台重点研发专项(2017ZH081);; 山东省重点研发计划项目(2015GGX102021)

作者(Author): 祝贞凤,李辉,史春丽,孙杰

DOI: 10.13289/j.issn.1009-6264.2018-0129

参考文献(References)：

• [1]Shuey R,Barlat F,Karabin M,et al.Experimental and analytical investigations on plane strain toughness for 7085 aluminum alloy[J].Metallurgical and Materials Transaction A,2009,40(2):365-376.
• [2]Warner T.Recently-developed aluminum solutions for aerospace applications[J].Materials Science Forum,2006,519-521(2):1271-1278.
• [3]宋仁国.高强度铝合金的研究现状及发展趋势[J].材料导报,2000(1):20-21.SONG Ren-guo.Current status and trends in high strength aluminum alloy research[J].Materials Review,2000(1):20-21.
• [4]William E Q,Michael V G.Method of producing an aluminum alloy product:US:4305763[P].1981-12-15.
• [5]陈志国,周娴,舒军.稀土在铝合金中微合金化的研究进展[J].矿冶工程,2010,30(2):102-106.CHEN Zhi-guo,ZHOU Xian,SHU Jun.Research progress of rare earth micro alloying in aluminum alloy[J].Mining and Metallurgical Engineering,2010,30(2):102-106.
• [6]Xiao D H,Wang J N,Ding D Y,et al.Effect of rare earth Ce addition on the microstructure and mechanical properties of an Al-CuMg-Ag alloy[J].Journal of Alloys and Compounds,2003,352:84-88.
• [7]Chaubey A K,Mohapatra S,Jayasankar K,et al.Effect of cerium addition on microstructure and mechanical properties of Al-ZnMg-Cu alloy[J].Transaction of the Indian Institute of Metals,2009,62(6):539-543.
• [8]张秀梅.Ce的加入对变形铝合金组织与疲劳性能的影响[J].包头钢铁学院学报,2000,19(3):244-247.ZHANG Xiu-mei.Effects of Ce element on the microstructure and fatigue property of wrought aluminum alloy[J].Journal of Bao Tou Steel University,2000,19(3):244-247.
• [9]房洪杰,孙杰,汪洪波,等.微量稀土元素Ce对7136铝合金微观组织和性能的影响[J].中国稀土学报,2016,34(3):313-319.FANG Hong-jie,SUN Jie,WANG Hong-bo,et.al.Effects of trace of Ce element on microstructure and properties of 7136 aluminum alloy[J].Journal of the Chinese Society of Rare Earths,2016,34(3):313-319.
• [10]Xie F Y,Yan X Yn,Ding L,et al.A study of microstructure and microsegregation of aluminum 7050 alloy[J].Materials Science and Engineering:A,2003,355(1):144-153.
• [11]刘秋平.稀土元素对7075合金机械性能的影响及回归工艺的优化.[D].郑州:郑州大学,2015.LIU Qiu-ping.Effect of rare earth element on 7075 alloys mechanical properties and the optimization of retrogression and re-aging treatment[D].Zhengzhou:Zhengzhou University,2015.
• [12]胡桂云,陈送义,姜慧丽.等.稀土Ce对7A52铝合金组织与性能的影响[J].中国有色金属学报,2016.26(7):1372-1382.HU Gui-yun,CHEN Song-yi,JANG Hui-li,et al.Effect of RE Ce on microstructure and properties of 7A52 aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2016.26(7):1372-1382.
• [13]张永雎,姚宗勇,黄光杰,等.轧制变形铝合金微观组织与织构的EBSD研究[J].电子显微学报.2009.28(1):43-47.ZHANG Yong-ju,YAO Zong-yong,HUANG Guang-jie,et al.EBSD investigation on microstructure and texture in rolling aluminum alloys[J].Journal of Chinese Electron Microscopy Society.2009.28(1):43-47.
• [14]张云崖.Al-Zn-Mg-Cu合金再结晶的控制与亚晶界对Mg Zn2粒子析出的影响[D].长沙:中南大学,2013.ZHANG Yun-ya.The control of recrystallization of Al-Zn-Mg-Cu alloys and effects of sub-grain boundaries on the precipitation of Mg Zn2phase particles[D].Changsha:Central South University,2013.
• [15]曾渝.超高强Al-Zn-Mg-Cu-Zr合金组织与性能研究[D].长沙:中南大学,2004.ZENG Yu.Study on microstructure and properties of ultra-high strength Al-Zn-Mg-Cu-Zr alloy[D].Changsha:Central South University,2004.

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