Transactions of Materials and Heat Treatment

Title：Research on materials flow law and microstructure distribution on roll forming of 6061 aluminum alloy disk parts

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ClassificationCode：TG33

year,vol(issue):pagenumber：2021,46(5):116-122

Abstract：

Through double-sided roll forming experiments of 6061 aluminum alloy disk parts, combined with numerical simulation and microstructure inspection, the shape change, the metal flow law and the microstructure distribution law of disk parts during the roll forming process were studied. Then, the aluminum alloy disk parts was formed by small feed and multi-pass roll forming, the main flow trend of material was to flow to the edge of disk parts, and secondly, there was material accumulation near the chuck in the center of disk part. The numerical simulation analysis shows that the strain rate is mainly concentrated on the contact position between disk part and rolling head, and the equivalent strain gradually decreases from the surface to the center of the deformation zone along the axis direction of disk parts. In addition, the microstructure distribution characteristics of the deformed zone were analyzed by EBSD (Electron-backscattered diffraction), and it was found that the grain size gradually increased and the recrystallized volume fraction gradually decreased from the surface of the deformation zone to the center. Thus, the research results have a reference for the design of the roll forming process.

Funds：

国家科技重大专项（2018ZX04044-001）

郝建强（1994-），男，硕士研究生 E-mail：haojqyl@foxmail.com 通讯作者：翟月雯（1982-），女，博士，博士生导师，研究员 E-mail：zhaiyuewen@163.com

Reference：

[1]Bewlay B P, Gigliotti M, Hardwicke C U, et al. Net-shape manufacturing of aircraft engine disks by roll forming and hot die forging[J]. Journal of Materials Processing Technology, 2003, 135(2-3): 324-329.

[2]Bewlay B P, Gigliotti M, Utyashev F Z, et al. Superplastic roll forming of Ti alloys[J]. Materials & Design, 2000,21: 278-295.

[3]Utyashev F Z, Mukhtarov S K, Nazarov A A, et al. Superplastic roll forming of axial symmetric articles from superalloys[J].Advanced Materials Research, 2011,278: 301-305.

[4]李庆华, 李付国, 魏志坚,等. 盘件辗轧成形技术研究进展[J]. 精密成形工程, 2015, 7(6):31-36, 63.

Li Q H, Li F G, Wei Z J, et al. A research progress in the disk roll forming technology[J]. Journal of Netshape Forming Engineering, 2015, 7(6):31-36, 63.

[5]沈晓辉. 高速车轮成形理论及组织演变规律研究[D]. 南京：南京航空航天大学，2016.

Shen X F. Research on Forming Theories and Microstructure Evolution of High Speed Railway Wheels[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2016.

[6]李彤. 盘型件双面辗压成形工艺研究[D]. 北京：机械科学研究总院集团有限公司，2006.

Li T. A Study on Technology of Double-Sided Roll Forming of Discal Parts[D]. Beijing: China Academy of Machinery Science and Technology Group Co. , Ltd. , 2006.

[7]李彤,金泉林.盘型件辗压成形载荷研究[J].锻压装备与制造技术, 2006, (2): 86-90.

Li T, Jin Q L. The research of rolling forming load for discal parts[J]. China Metalforming Equipment & Manufacturing Technology, 2006, (2): 86-90.

[8]李彤,金泉林,刘晓飞.成形复杂盘件时辗压工具运动轨迹的研究[J].锻压技术, 2008，33(5): 76-81.

Li T, Jin Q L, Liu X F. Experimental study on roller feed route of double sided roll forming of disc parts with complex profile [J]. Forging & Stamping Technology, 2008，33(5): 76-81.

[9]樊璐璐, 刘晓飞, 翟月雯,等. 盘件无模碾压技术进展及产业化分析[J]. 机械工程学报, 2020, (14):44-56.

Fan L L, Liu X F, Zhai Y W, et al. Technical progress and industrialization analysis of dieless rolling for turbine disk[J]. Journal of Mechanical Engineering, 2020, (14): 44-56.

[10]金泉林,刘晓飞.铝合金盘型件等温辗压过程中晶粒尺寸演化的数值模拟与试验验证[J].航空学报,2012, 33(2): 335-346.

Jin Q L, Liu X F. Numerical simulation and experimental validation of grain size evolution during double-sided isothermal roll forming for aluminum alloy discal parts[J]. Acta Aeronautica et Astronautica Sinica, 2012, 33(2): 335-346.

[11]张风光,金泉林,李洪波.TC4盘件双面辗压的试验研究[J].锻压技术, 2013,38(5): 87-91.

Zhang F G, Jin Q L, Li H B. Experimental study on double-sided roll forming of TC4 disk[J]. Forging & Stamping Technology, 2013,38(5): 87-91.

[12]金泉林.钛合金辗压盘件的微观组织分布特征[J]. 塑性工程学报, 2013, 20(6): 9-16.

Jin Q L. Microstructure distribution of rolled titanium disk [J]. Journal of Plasticity Engineering, 2013, 20(6): 9-16.

[13]Yang G, Hao J Q, Wang H Z, et al. The microstructure evolution of 6061 aluminum alloy during dieless rolling thermal deformation[J]. Procedia Manufacturing, 2020,50: 51-55.

[14]Zhang Y, Jiang S, Wang S, et al. Influence of partial static recrystallization on microstructures and mechanical properties of NiTiFe shape memory alloy subjected to severe plastic deformation[J]. Materials Research Bulletin, 2016, 88(APR): 226-233.

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