Effect of Temperature on Grain Size in AA6063 Aluminum Alloy Subjected to Repetitive Corrugation and Straightening

doi:10.1007/s40195-018-0866-6

Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (7): 835-844.DOI: 10.1007/s40195-018-0866-6

所属专题： 2019年铝合金专辑

收稿日期:2018-08-28 修回日期:2018-11-14 接受日期:2019-01-01 出版日期:2019-01-01 发布日期:2019-06-20

Effect of Temperature on Grain Size in AA6063 Aluminum Alloy Subjected to Repetitive Corrugation and Straightening

N. Thangapandian¹(), S. Balasivanandha Prabu², K. A. Padmanabhan ²

1. Department of Mechanical Engineering, St. Joseph’s Institute of Technology, Chennai 600 119, India ;
2. Department of Mechanical Engineering, College of Engineering Guindy, Anna University, Chennai 600 025, India

Received:2018-08-28 Revised:2018-11-14 Accepted:2019-01-01 Online:2019-01-01 Published:2019-06-20

摘要/Abstract

关键词: Repetitive corrugation and straightening, Strain, Grain size reduction/refinement, EBSD, Strength, Hardness

Abstract:

The influence of processing temperature on grain size reduction in AA 6063 aluminum alloy subjected to repetitive corrugation and straightening (RCS) is investigated in this work. The aluminum alloy was processed by RCS at different temperatures (room temperature, 100 °C, 200 °C and 300 °C) till the maximum number of passes possible before failure and the mechanical properties such as tensile strength and hardness were measured. The grain size and their misorientation of grains of the processed samples were analyzed using the electron backscattered diffraction. The results indicated that the transformation of low-angle grain boundaries to high-angle grain boundaries and dislocation tangles were highly dependent on the strain imparted, which could be controlled by selecting the proper processing temperature. As a result, the mechanical properties are affected. In particular, the room temperature tensile strength and hardness values of the processed material decrease with increasing processing temperature.

Key words: Repetitive corrugation and straightening, Strain, Grain size reduction/refinement, EBSD, Strength, Hardness

. [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(7): 835-844.

N. Thangapandian, S. Balasivanandha Prabu , K. A. Padmanabhan. Effect of Temperature on Grain Size in AA6063 Aluminum Alloy Subjected to Repetitive Corrugation and Straightening[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(7): 835-844.

图/表 10

Fig. 1 Schematic of a corrugation die, b straightening die

Fig. 2 Room temperature hardness for AA6063 alloy processed at RT and three elevated temperatures

Fig. 3 Stress-strain curves for alloy AA6063: a processed at RT, b processed at 100 °C, c processed at 200 °C, d processed at 300 °C

Fig. 4 Arrhenius plot to determine activation energy for rate controlling process

Fig. 5 a EBSD GB map, b grain size distribution, c misorientation angle map of AA6063 alloy

Fig. 6 EBSD images of AA6063 after a 4 passes at RT, b 6 passes at RT, c 8 passes at RT, d 4 passes at 100 °C, e 6 passes at 100 °C, f 8 passes at 100 °C, g 4 passes at 200 °C, h 6 passes at 200 °C, i 8 passes at 200 °C, j 4 passes at 300 °C, k 6 passes at 300 °C, l 8 passes at 300 °C

Fig. 7 Grain size distribution in AA6063 after a 4 passes at RT, b 6 passes at RT, c 8 passes at RT, d 4 passes at 100 °C, e 6 passes at 100 °C, f 8 passes at 100 °C, g 4 passes at 200 °C, h 6 passes at 200 °C, i 8 passes at 200 °C, j 4 passes at 300 °C, k 6 passes at 300 °C, l 8 passes at 300 °C

Fig. 8 Misorientation angle fraction in AA6063 after different treatments: a 4 passes at RT, b 6 passes at RT, c 8 passes at RT, d 4 passes at 100 °C, e 6 passes at 100 °C, f 8 passes at 100 °C, g 4 passes at 200 °C, h 6 passes at 200 °C, i 8 passes at 200 °C, j 4 passes at 300 °C, k 6 passes at 300 °C, l 8 passes at 300 °C

Fig. 9 Inverse pole figures of alloy after RCS at different temperatures: a 4 passes at RT, b 6 passes at RT, c 8 passes at RT, d 4 passes at 100 °C, e 6 passes at 100 °C, f 8 passes at 100 °C

Fig. 10 XRD patterns of alloy after RCS at different temperatures

[1]	. [J]. Acta Metallurgica Sinica (English Letters), 2017, 30(3): 280-288.
[2]	刘玉华胡建东张亚平郭作兴杨悦. Effects of parameters on interface of the brazed ZrO2 ceramic and Ti–6Al–4V joint using Ti-based amorphous filler[J]. Acta Metallurgica Sinica (English Letters), 2012, 25(2): 89-94.
[3]	曾周燏陈礼清朱伏先刘相华. Static Recrystallization Behavior of a Martensitic Heat-resistant Stainless Steel 403Nb[J]. Acta Metallurgica Sinica (English Letters), 2011, 24(5): 381-389.
[4]	张显程. Creep Behavior of Plasma Sprayed NiCr and NiCrAl Coating-based Systems[J]. Acta Metallurgica Sinica (English Letters), 2011, 24(3): 183-189.
[5]	马春伟. Correlation between Brazed Joint Elevated Strength, Microstructure and Brazing Processing Parameter of Inconel Superalloy[J]. Acta Metallurgica Sinica (English Letters), 2011, 24(3): 205-212.
[6]	朱永伟朱永伟陈拥军朱昌洪沈湘黔. On the Ni-P-Nanodiamond Composite Electroless Plating[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(6): 409-415.
[7]	范晓慧 Weiqin Tang Shaorui Zhang Dayong Li Yinghong Peng. Effects of Dynamic Recrystallization in Extruded and Compressed AZ31 Magnesium Alloy[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(5): 334-342.
[8]	王芳崔维成. 三维应力状态对裂纹不稳定扩展条件以及裂纹张开水平的影响[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(1): 41-49.
[9]	王建忠 Qu Xuanhui Yin Haiqing. Green properties and stress wave of high velocity compacted iron powder[J]. Acta Metallurgica Sinica (English Letters), 2009, 22(6): 447-453.

Effect of Temperature on Grain Size in AA6063 Aluminum Alloy Subjected to Repetitive Corrugation and Straightening

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 10

参考文献

相关文章 9

编辑推荐

Metrics

本文评价