Transactions of Materials and Heat Treatment

Title：Simulation study on formability improvement of 2B06 aluminum alloy frame through short time local heat treatment

Authors： Wang Zhijian Gao Yulin Song Hongwu Wang Ling Wang Jiale

Unit： Shenyang Aerospace University Institute of Metal Research Shenyang Aircraft Corporation

KeyWords： tailored heat treated blanks 2B06 aluminum alloy local hardening frame part strain path

ClassificationCode：TG386

year,vol(issue):pagenumber：2019,44(9):133-140

Abstract：

The true stress-strain curves of 2B06 aluminum alloy with original O-state and plate through short time heat treatment were obtained by uniaxial tensile test, and the application of tailored heat treated blanks (THTB) in the forming of aluminum alloy complex parts was discussed by finite element simulation method. Then, the influences of different local heat treatment schemes on the formability of aluminum alloy complex frame parts were systematically studied, and the mechanism of improving the formability of parts was also analyzed. The simulation results show that local thinning is severe and fracture occurs usually in the plane strain region when the frame part is formed by original O-state plate, and the suitable local heat treatment scheme can greatly improve the formability of the frame parts. Furthermore, the local hardening of materials caused by the local heat treatment significantly improves the local formability of 2B06 aluminum alloy. At the same time, the gradient distribution of soft and hard materials changes the strain path in the original fracture position from plane strain to uniaxial tensile state, and the formability of sheet is improved remarkably.

Funds：

沈阳市重点科技研发计划对外科技交流合作专项（17-105-6-00）；国家自然科学基金青年基金（51205261）

王志坚（1974-），女，博士，教授 E-mail：wangzhijian1974@sina.com 通讯作者：宋鸿武（1981-），男，博士，副研究员 E-mail：hwsong@imr.ac.cn

Reference：

［1］邓学峰,张辉,陈振华.铝合金板成形性及成形工艺研究现状
［J］.材料导报,2005, 19 (12):56-59.

Deng X F, Zhang H, Chen Z H. Sheet metal formability and forming process of aluminum alloy
［J］. Materials Review, 2005, 19 (12):56-59.

［2］Staud D, Merklein M . Inverse approach to the forming simulation of tailored heat treated blanks
［J］. International Journal of Material Forming, 2008, 1(1):37-40.

［3］涂集林,王永军,魏生民.先进钣金成形技术及装备发展现状
［J］.航空制造技术,2015,58(16):44-47.

Tu J L, Wang Y J, Wei S M. Advanced forming technology and equipment development of sheet metal
［J］. Aeronautical Manufacturing Technology, 2015,58(16):44-47.

［4］Haase C, Wurst H. Zur frage der kalt-und warmaushrtung bei aluminium-magnesium-silizium-legierungen
［J］. Z. Metallkunde, 1941, 33: 399-403.

Haase C, Wurst H.Concerning cold and heat hardening in aluminium magnesium silicon alloys
［J］. Z. Metallkunde, 1941, 33: 399-403.

［5］Dirks F J. Tiefziehen Vorverfestigter Und Partiell GeglHter Ronden Aus Aluminium Und Aluminiumlegierungen
［M］. Germany：Technische Universitt Berlin, 1971.

Dirks F J. Deep Drawing of Pre-fixed and Partially Welded Wheels of Aluminium and Aluminium Alloy
［M］. Germany：Technical University of Berlin, 1971.

［6］Vollertsen F. Modelling the deep drawing of process optimized blanks
［A］. Proc. 20th Biennial IDDRG Congress
［C］. Genval, Belgium，2000.

［7］Geiger M, Merklein M, Staud D, et al. An inverse approach to the numerical design of the process sequence of tailored heat treated blanks
［J］. Production Engineering, 2008, 2(1):15-20.

［8］Hung N, Marion M. Improved formability of aluminum alloys using laser induced hardening of tailored heat treated blanks
［J］. Physics Procedia, 2012, 39:318-326.

［9］Geiger M, Merklein M, Kerausch M . Finite element simulation of deep drawing of tailored heat treated blanks
［J］. CIRP Annals-Manufacturing Technology, 2004, 53(1):223-226.

［10］王志坚,刘保义,宋鸿武，等.短时高温热处理对H态5250铝合金力学性能的影响
［J］.科研，2018,（2）: 156-158.

Wang Z J, Liu B Y, Song H W, et al. Effect of short time high temperature heat treatment on mechanical properties of H-state 5250 aluminum alloy
［J］. Research, 2018,（2）: 156-158.

［11］Alexander K, Daniel W, Marion M. Influence of a short term heat treatment by conduction and induction on the mechanical properties of AA6014 alloys
［J］. Physics Procedia, 2014, 56(3):1410-1418.

［12］金飞翔,钟志平,李凤娇，等.不同硬化模型对铝合金板冲压成形模拟结果的影响
［J］.机械工程学报,2017, 53 (22):57-66.

Jin F X, Zhong Z P, Li F J, et al. Influence of different hardening model for the simulating results of the aluminum alloy sheet stamping
［J］. Journal of Mechanical Engineering, 2017, 53 (22):57-66.

［13］Keeler S P. Plastic Instability and Fracture in Sheets Stretched over Rigid Punches
［D］. Cambridge:Massachusetts Institute of Technology, 1961.

［14］Zarini S, Mostaed E, Vedani M, et al. Formability enhancement of Al6060 sheets through fiber laser heat treatment
［J］. International Journal of Material Forming, 2017, 10(5): 741-751.

［15］Merklein M, Johannes M, Lechner M, et al. A review on tailored blanks-Production, applications and evaluation
［J］. Journal of Materials Processing Technology, 2014, 214(2):151-164.

［16］Kahrimanidis A, Wortberg D, Merklein M. Approach to minimize the distortion of 6xxx-aluminum tailor heat treated blanks in industrial applications
［J］. Production Engineering, 2015, 9(5-6):569-576.

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