Effect of Ce modification and annealing on microstructure and properties of ADC12 aluminum alloy for automobile

doi:10.13251/j.issn.0254-6051.2024.12.030

Abstract

Abstract: Effects of modification with different amounts of Ce on microstructure and hardness of the as-cast ADC12 aluminum alloy were studied by using OM, hardness testing, conductivity testing and other methods, as well as the changes in microstructure, hardness, and conductivity after annealing at different temperatures. The results show that within the range of 0% to 0.6%Ce, with the increase of Ce addition, the size of the α-Al phase and that of eutectic Si phase in the tested ADC12 aluminum alloy continuously decrease, and the hardness increases to 67.8 HBS, indicating a better modification effect. When the Ce addition continues to increase to 0.8%, the modification effect for the tested ADC12 aluminum alloy deteriorates, and the optimal Ce addition amount is 0.6%. Annealing treatment of the 0.6% Ce modified ADC12 aluminum alloy at 450, 480, 510, and 540 ℃ can refine the eutectic Si phase in the as-cast ADC12 aluminum alloy, enhance the hardness and conductivity of the alloy. When the annealing temperature is 510 ℃, the hardness and conductivity of the ADC12 aluminum alloy reach their optimal values of 84.5 HBS and 22.61 MS/m, respectively.

Key words: ADC12 aluminum alloy, Ce modification, annealing, microstructure, property

CLC Number:

An Shiqi, Hao Zengtian. Effect of Ce modification and annealing on microstructure and properties of ADC12 aluminum alloy for automobile[J]. Heat Treatment of Metals, 2024, 49(12): 179-183.

References

[1]Liu X, Liu T, Liu Z, et al. Effects of B-containing composite flux on the microstructures and mechanical properties of the ADC12 alloys[J]. Materials Research Express, 2019, 6(9): 096576-096576.
[2]Lalta P, Niteesh K, Anshul Y, et al. In situ formation of ZrB₂ and its influence on wear and mechanical properties of the ADC12 alloy mixed matrix composites[J]. Materials, 2021, 14(9): 2141.
[3]刘超, 文锋, 陈继强, 等. 添加Sc、Zr和退火对Al-Si合金铸态力学性能的影响[J]. 材料研究学报, 2021, 35(2): 93-100.
Liu Chao, Wen Feng, Chen Jiqiang, et al. Effects of Sc and Zr addition and annealing on the mechanical properties of as-cast Al-Si alloy[J]. Journal of Materials Research, 2021, 35(2): 93-100.
[4]解佩佩, 史攀, 李方峰, 等. 稀土Ce变质铸造Al-12.35Si合金的组织及性能[J]. 铸造技术, 2021, 42(6): 475-481.
Xie Peipei, Shi Pan, Li Fangfeng, et al. Microstructure and properties of rare earth Ce modified cast Al-12.35Si alloy[J]. Casting Technology, 2021, 42(6): 475-481.
[5]熊俊杰, 闫洪, 揭小平. Sr变质对ADC12组织及性能的影响[J]. 功能材料, 2016, 47(8): 8104-8108.
Xiong Junjie, Yan Hong, Jie Xiaoping. Effect of Sr modification on microstructure and properties of ADC12[J]. Functional Materials, 2016, 47(8): 8104-8108.
[6]Zhang L J, Yan H, Zou Y C, et al. Effect of adding rare-earth cerium on the microstructure and acid rain corrosion resistance of the ADC12 alloy[J]. International Journal of Materials Research, 2021, 112(3): 241-249.
[7]Xu L X, Yan H, Liu W, et al. Effects of rare earth Pr/Ce on tribological behavior of the ADC12 alloy[J]. Journal of Wuhan University of Technology(Materials Science), 2021, 36(1): 136-142.
[8]何兵, 覃铭, 韦荣生. ADC12铝合金退火处理后性能的分析[J]. 科技通报, 2016, 32(12): 89-92.
He Bing, Qin Ming, Wei Rongsheng. Analysis of properties of ADC12 aluminum alloy after annealing treatment[J]. Science and Technology Bulletin, 2016, 32(12): 89-92.
[9]马冬威, 李文巧, 张元好, 等. 时效对ADC12压铸铝合金组织和性能的影响[J]. 金属热处理, 2022, 47(12): 90-94.
Ma Dongwei, Li Wenqiao, Zhang Yuanhao, et al. Effect of aging on the microstructure and properties of ADC12 die cast aluminum alloy[J]. Heat Treatment of Metal, 2022, 47(12): 90-94.
[10]黄锋, 王广, 赵劲锋, 等. La+Ce混合变质及热处理对ADC12铝合金导热性能的影响研究[J]. 表面工程与再制造, 2023, 23(5): 24-28.
Huang Feng, Wang Guang, Zhao Jinfeng, et al. Research on the effect of La+Ce mixed modification and heat treatment on the thermal conductivity of ADC12 aluminum alloy[J]. Surface Engineering and Remanufacturing, 2023, 23(5): 24-28.

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