车用6XXX系铝合金时效工艺与微合金化研究进展-中国材料进展

文章信息/Info

Title:: Research Progress on Aging Process and Microalloying of 6XXX Aluminum Alloy Used in Automobile

作者:: 张兵; 叶俊峰; 胡玉军; 梁小霞; 旷军平; 赵鸿金; 1. 江西理工大学材料科学与工程学院，江西赣州 341000 2. 江西师范高等专科学校铜业制造学院，江西鹰潭 335000 3. 广东高登铝业有限公司，广东肇庆 526000 4. 江西广信新材料股份有限公司，江西鹰潭 335000

Author(s):: ZHANG Bing; YE Junfeng; HU Yujun; LIANG Xiaoxia; KUANG Junping; ZHAO Hongjin; 1.School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 2.School of Copper Manufacturing, Jiangxi Teachers College, Yingtan 335000, China et al.

Keywords:: 6XXX series aluminum alloy; microalloying; mechanical property; microstructure; aging

摘要:: 6XXX系铝合金是一类具有中高强度、易成形、耐腐蚀、吸能效果优良等优异综合性能的轻质合金，也是汽车轻量化技术发展的重要材料，从成分工艺组织性能之间关系的角度厘清6XXX系铝合金的强化机理和调控手段，对拓宽铝合金在我国汽车领域的应用范围至关重要。概述了6XXX系铝合金在汽车上的应用，介绍了6XXX系铝合金的主要强化机理，重点阐述了6XXX系铝合金的时效工艺研究进展和在时效过程中析出相的演变规律，简要论述了Cu，Cr，Mn，Sn，Sc，Zr和Ce等微合金化元素对6XXX系铝合金微观组织和力学性能的影响。最后，对开发具有更优综合性能的6XXX系铝合金进行了展望。

Abstract:: 6XXX series aluminum alloy is a kind of light alloy with excellent comprehensive properties of medium and high strength, easy forming, corrosion resistance,good energy absorption effect, and so on. It is also an important material for the development of automotive lightweight technology. It is very important to clarify the strengthening mechanism and control method of 6XXX series aluminum alloy from the perspective of composition-process-structureproperty relationships, so as to broaden the application range of aluminum alloy in the automotive field of our country. This paper summarizes the application of 6XXX series aluminum alloy in automobile, introduces the main strengthening mechanisms of 6XXX series aluminum alloy, and focuses on the aging process progress of 6XXX series aluminum alloy and the evolution law of precipitated phase in the aging process. The effects of microalloying elements such as Cu, Cr, Mn, Sn, Sc, Zr and Ce on the microstructures and mechanical properties of 6XXX series aluminum alloys are briefly discussed. Finally, the development of 6XXX series aluminum alloy with better comprehensive properties is prospected.