Effect of Process State on Crushing Properties of 6061 Aluminum Alloy Profiles for Automobile

被引：0
|
作者：
Wan L. [1 ,2 ]
Liu R. [2 ]
Deng Y. [1 ]
Tang J. [1 ]
Zhang Y. [1 ]
机构：
[1] School of Materials Science and Engineering, Central South University, Changsha
[2] Guangdong Fenglu Aluminum Co., Ltd, Foshan
来源：
Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 08期
关键词：
Aging process; Crushing property; Necking; Uniform elongation;
D O I：
10.11896/cldb.20010015
中图分类号：
学科分类号：
摘要：
In this paper, the effect of aging temperature (120 - 220℃) on the plastic deformation behavior of 6061 aluminum alloy profile for automobile was studied by means of electronic universal testing machine and scanning electron microscope. The results show that the composite elongation (A50) is about 22% and the uniform elongation (Ag) is about 20% after low temperature aging. The samples show the characteristics of ductile fracture, and there are some large and deep dimples in the fracture morphology. However, aging at 160-180℃ increased the strength of the material, while its elongation (A50 and Ag) decreased to less than 9%. The dimple morphology of the fracture surface is small and shallow. With the further increase of aging temperature, the comprehensive elongation of the material gradually rises, while the uniform elongation tends to be stable. The difference between the two kinds of elongation increased significantly. The tensile specimen shows a strong necking phenomenon, and its fracture morphology is dominated by large and deep dimples. Although the high uniform elongation sample and the strong necking sample show good crushing performance, the strong necking sample is better. © 2021, Materials Review Magazine. All right reserved.
引用
收藏
页码：8099 / 8102
页数：3
相关论文
共 12 条
  • [1] Wan Y H, Wang G, Liu Z W, Et al., Materials for Mechanical Enginee-ring, 36, 7, (2012)
  • [2] Song B., Metallurgical Collections, 2016(2), 16(in Chinese)
  • [3] Gao G J, Li Y, Li J D, Et al., Transactions of Materials and Heat Treatment, 37, 6, (2016)
  • [4] Sun B, Guan Q L., Hot Working Technology, 48, 10, (2019)
  • [5] Ye T, Wang G, Yao Z Q, Et al., The Chinese Journal of Nonferrous Metals, 24, 4, (2014)
  • [6] Ding X Q, He G Q, Chen C S, Et al., Journal of Materials Science and Engineering, 23, 2, (2005)
  • [7] Zhang W P, Li H H, Hu Z L, Et al., Materials Reports A: Review Papers, 31, 7, (2017)
  • [8] Liu J A, Feng Y X., Materials Reports, 18, 8, (2004)
  • [9] Si Y L., Research of axial crushing of high strength aluminum alloy thin-walled structures under warm forming, (2016)
  • [10] Schiffl A, Schiffl I, Hartmann M, Et al., Aluminum Two Thousand World Congress and International Conference on Extrusion and Benchmark ICEB 2017, (2017)
12