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Deformation behavior, microstructure and properties of commercially pure aluminum under coupling effects of upsetting-shear-extrusion
Affiliation:

Xuzhou University of Technology,Xuzhou

Clc Number:

TG376

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    Abstract:

    A novel process named Expansion non-equal channel angular extrusion (Exp-NECAE) is proposed, which integrates various deformations including upsetting, shearing and extrusion in a single pass. Based on the theoretical analysis, severe plastic deformation behavior of commercially pure aluminum under multi-deformation coupling effects was investigated by numerical simulation and experimental verification, and the evolution of microstructure and mechanical properties of the processed materials was discussed. The results show that Exp-NECAE process has the advantage of high efficiency as a compound deformation method, the billet was extruded continuously, stably and compatibly, and the deformation process can be classified into three different stages: corner area deformation, transition area deformation and extruded area deformation, respectively. During the process, the processed material was in an ideal three-dimensional compressive stress state with homogeneous deformation distribution. The accumulative strrain was as high as 2.56 after a single pass of extrusion, which was close to the theoretical calculation. After one pass of Exp-NECAE, under the simple shear strain induced by the coupling effects of upsetting, shear and extrusion, the grain size of commercial pure aluminum was significantly refined, forming a mixed microstructure dominated by ultrafine equiaxed grains with an average grain size of around 2.73 μm. Moreover, the mechanical properties of the processed material were significantly improved. The average microhardness was 55.8 HV, and the tensile strength and the elongation can reach up to 161.2 MPa and 13.9%, respectively. A large number of small and deep dimples were observed in the fracture morphology, and the distribution was relatively uniform, showing a good ductile fracture characteristics.

    Reference
    [1] Peng Wang, Yuhai Xiang, Xiaogui Wang et al. International Journal of Plasticity[J], 2019, 123: 22-37.
    [2] N Sadasivan, M Balasubramanian, B R Rameshbapu. Journal of Manufacturing Processes[J], 2020, 59:698-726.
    [3] Liu Xiaoyan(刘晓燕),Zhang Qi(张琪),Gao Feilong(高飞龙)et al. Materials Review(材料导报)[J], 2020, 34(19): 19111-19116.
    [4] Huang He, Liu Huan, Wang Ce et al. Journal of Magnesium and Alloys[J], 2019, 7(4): 617-627.
    [5] V V Stolyarov, Y T Zhu, I V Alexandrov et al. Materials Science Engineering: A[J], 2003, 343(1-2), 43-50.
    [6] M Asgari, F Fereshteh-saniee. Transactions of Nonferrous Metals Society of China[J], 2016, 26(05): 1276-1283.
    [7] M Ensafi, G Faraji, H Abdolvand. Materials Letters[J]. 2017, 197: 12-16
    [8] S Sepahi-Boroujeni, F Fereshteh-Saniee. Journal of Materials Science[J], 2015, 50(11): 3908-3919.
    [9] Liu Zhaohua(刘兆华),Wang Xiaoxi(王晓琪),Chen Liangwei(陈亮伟)et al. Journal of Materials Engineering(材料工程)[J],2014, 11: 62-66.
    [10] H. Torabi, F. Samadpour, G. Faraji, A. Masoumi. Journal of Materials Engineering and Performance[J], 2019, 28(9): 5586-5594.
    [11] S Wang, W Liang, Y Wang et al. Journal of Materials Processing Technology[J], 2009, 209(7):3182-3186.
    [12] Wang Xiaoxi(王晓溪),Zhang Xiang(张翔),Zhuang Yi(庄翌)et al. Rare Metal Materials and Engineering(稀有金属材料与工程)[J]. 2020,49(06):1963-1969.
    [13] Li Ping(李萍),Wei Li(魏李),Duan Zihao(段自豪)et al.. Rare Metal Materials and Engineering(稀有金属材料与工程) [J],2019, 48(08): 2550-2555.
    [14] M Richert, H J Mcqueen, J Richert. Canadian Metallurgical Quarterly[J], 1998, 37(5): 449-457
    [15] Y Iwahashi, J Wang, Z Horita et al. Scripta Materialia[J], 1996, 35(2):143-146.
    [16] V M Segal. Philosophical Magazine Letters[J], 2019, 98(11): 511-520.
    [17] Siroos Ahmadi, Vali Alimirzaloo, Ghader Faraji, et al. Transactions of the Indian Institute of Metals[J]. 2020, 73:2447–2456.
    [18] Chengpeng Wang, Fuguo Li, Qinghua Li, et al. Materials Design[J], 2013, 43: 492-498
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[Wang Xiaoxi, Zhang Xiang, Yuan Junchi, Jin Xinyu, Dong Xinbing, Gao Yuanyang. Deformation behavior, microstructure and properties of commercially pure aluminum under coupling effects of upsetting-shear-extrusion[J]. Rare Metal Materials and Engineering,2021,50(9):3176~3183.]
DOI:10.12442/j. issn.1002-185X.20210124

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History
  • Received:February 09,2021
  • Revised:April 09,2021
  • Adopted:April 23,2021
  • Online: September 27,2021
  • Published: September 24,2021