Fast solution heat treatment of high strength aluminum alloy sheets in radiant heating furnace during hot stamping

被引：19
作者：
Liu Y. [1 ,2 ]
Zhu B. [1 ,2 ]
Wang Y. [1 ,2 ]
Li S. [3 ]
Zhang Y. [1 ,2 ]
机构：
[1] State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science & Technology, Wuhan
[2] School of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan
[3] School of Mechanics Science and Engineering, Huazhong University of Science & Technology, Wuhan
来源：
International Journal of Lightweight Materials and Manufacture | 2020年 / 3卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Fast solution heat treatment; High strength aluminum alloy; Hot stamping; Radiant heating;
D O I：
10.1016/j.ijlmm.2019.11.004
中图分类号：
学科分类号：
摘要：
Lightweight of automobile has drawn increasing attention due to the demand for energy saving and emission reduction. High strength aluminum alloy sheet shows great potential in the automobile industry for its high strength and low density. Hot stamping has been developed for high strength aluminum alloy to improve the formability and reduce the springback. However, the solution time of this technology is too long. In order to reduce the solution time, several experiments have been carried out. The heating curves of bare sheets and BN or graphite coated sheets in radiant heating furnace were measured and the theoretical heating efficiency was calculated. The results showed that the heating efficiency was improved about 7.4 times with BN coating and 9.2 times with graphite coating depending on the heating temperature, so the heating rates of the coated sheets were faster than that of bare sheets. Further, hot stamping of bare and coated sheets was carried out and the mechanical properties of hot stamped sheets were tested. Hot stamping results showed that the solution time of 6061 and 7075 decreased from 10 min to 5 min by spraying BN or graphite on the sheets, reducing the solution time by 50%. © 2020 The Authors
引用
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页码：20 / 25
页数：5
相关论文
共 18 条
[1]  
Fakir O.E., Wang L., Balint D., Dear J.P., Lin J., Dean T.A., Numerical study of the solution heat treatment, forming, and in-die quenching (HFQ) process on AA5754, Int. J. Mach. Tool Manuf., 87, pp. 39-48, (2014)
[2]  
Liu Y., Zhu Z., Wang Z., Zhu B., Wang Y., Zhang Y., Flow and friction behaviors of 6061 aluminum alloy at elevated temperatures and hot stamping of a B-pillar, Int. J. Adv. Manuf. Technol., 96, pp. 4063-4083, (2018)
[3]  
Garrett R.P., Lin J., Dean T.A., Solution heat treatment and cold die quenching in forming AA6xxx sheet components: feasibility study, Adv. Mater. Res., 673, pp. 673-680, (2005)
[4]  
Ozturk F., Sisman A., Toros S., Kilic S., Picu R.C., Influence of aging treatment on mechanical properties of 6061 aluminum alloy, Mater. Des., 31, pp. 972-975, (2010)
[5]  
Massardier V., Epicier T., Merle P., Correlation between the microstructural evolution of a 6061 aluminium alloy and the evolution of its thermoelectric power, Acta Mater., 48, pp. 2911-2924, (2000)
[6]  
Pogatscher S., Antrekowitsch H., Leitner H., Ebner T., Uggowitzer P.J., Mechanisms controlling the artificial aging of Al–Mg–Si Alloys, Acta Mater., 59, pp. 3352-3363, (2011)
[7]  
Rojas J.I., Crespo D., Dynamic microstructural evolution of an Al–Zn–Mg–Cu alloy (7075) during continuous heating and the influence on the viscoelastic response, Mater. Char., 134, pp. 319-328, (2017)
[8]  
Ibrahim M.F., Samuel A.M., Alkahtani S.A., Samuel F.H., A novel solution heat treatment of 7075-type Alloy, Light Metals 2013, the Minerals, Metals & Materials Series, pp. 383-390, (2013)
[9]  
Shao Z., Jiang J., Lin J., Feasibility study on direct flame impingement heating applied for the solution heat treatment, forming and cold die quenching technique, J. Manuf. Tech. Processes., 36, pp. 398-404, (2018)
[10]  
Zhang Z., Yu J., He D., Influence of contact solid-solution treatment on microstructures and mechanical properties of 7075 aluminum alloy, Mater. Sci. Eng. A Struct., 743, pp. 500-503, (2019)
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