|
|
Effect of Annealing Temperature on Tensile Fracture Behavior of ARB-Cu at Room Temperature |
Min LI, Jing LIU, Qingwei JIANG() |
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
|
Cite this article:
Min LI, Jing LIU, Qingwei JIANG. Effect of Annealing Temperature on Tensile Fracture Behavior of ARB-Cu at Room Temperature. Acta Metall Sin, 2017, 53(8): 1001-1010.
|
Abstract Annealing treatment is an effective method for improving structural stability of ultrafine-grained (UFG) or nanostructured (NS) materials produced by severe plastic deformation (SPD). This work focuses on the effect of annealing temperature on the tensile fracture behavior of UFG Cu produced by accumulative roll bonding (ARB). Annealing treatment was performed for 10 min at temperatures of 100, 150, 200 and 250 ℃. The microstructure of annealed and ARBed UFG Cu was observed by TEM. The uniaxial static tensile test was performed by utilizing fatigue testing machine (IBTC-5000) with an initial strain rate of 10-2 s-1. Fracture morphology was observed by SEM. The results suggested that yield strength and tensile strength decreased after annealing treatment compared with initial sample. However, yield strength and tensile strength of ARB-Cu increased with increasing annealing temperature below recrystallization temperature. When annealing temperature is higher than recrystallization temperature, the strength decreased rapidly. With increasing the annealing temperature, the grain size of ARB-Cu increases and gradually tends to bimodal distribution, and the fracture morphology shows a trend of increasing plasticity gradually. The annealing treatment is helpful to bonding efficiency E. The relationship between the theoretical bonding efficiency E and the ARB passes n can be expressed in E=(1-0.5n)×100%.
|
Received: 25 October 2016
|
|
Fund: Supported by National Natural Science Foundation of China (No.51201077) |
[1] | Murashkin M Y, Sabirov I, Medvedev A E, et al.Mechanical and electrical properties of an ultrafine grained Al-8.5 wt. % RE (RE=5.4 wt.% Ce, 3.1 wt.% La) alloy processed by severe plastic deformation[J]. Mater. Des., 2016, 90: 433 | [2] | Valiev R Z, Estrin Y, Horita Z, et al.Producing bulk ultrafine-grained materials by severe plastic deformation[J]. JOM, 2006, 58(4): 33 | [3] | Khatibi G, Horky J, Weiss B, et al.High cycle fatigue behaviour of copper deformed by high pressure torsion[J]. Int. J. Fatigue, 2010, 32: 269 | [4] | Zhan M Y, Li C M, Zhang W W.An EBSD study on the microstructure and texture evolution of AZ31 magnesium alloy during accumulative roll-bonding[J]. Acta Metall. Sin., 2012, 48: 709(詹美燕, 李春明, 张卫文. 累积叠轧焊AZ31镁合金微观组织和织构演变的EBSD研究[J]. 金属学报, 2012, 48: 709) | [5] | Tao N R, Lu K.Preparation techniques for nano-structured metallic materials via plastic deformation[J]. Acta Metall. Sin., 2014, 50: 141(陶乃镕, 卢柯. 纳米结构金属材料的塑性变形制备技术[J]. 金属学报, 2014, 50: 141) | [6] | Renk O, Hohenwarter A, Eder K, et al.Increasing the strength of nanocrystalline steels by annealing: Is segregation necessary?[J]. Scr. Mater., 2015, 95: 27 | [7] | Valiev R Z, Sergueeva A V, Mukherjee A K.The effect of annealing on tensile deformation behavior of nanostructured SPD titanium[J]. Scr. Mater., 2003, 49: 669 | [8] | Jiang Q W, Li X W.Effect of pre-annealing treatment on the compressive deformation and damage behavior of ultrafine-grained copper[J]. Mater. Sci. Eng., 2012, A546: 59 | [9] | Huang X X, Hansen N, Tsuji N.Hardening by annealing and softening by deformation in nanostructured metals[J]. Science, 2006, 312: 249 | [10] | Qin X Y, Lee J S, Lee C S.Microstructures and mechanical behavior of bulk nanocrystalline γ-Ni-Fe produced by a mechanochemical method[J]. J Mater. Res., 2002, 17: 991 | [11] | Kamikawa N, Huang X X, Tsuji N, et al.Strengthening mechanisms in nanostructured high-purity aluminium deformed to high strain and annealed[J]. Acta Mater., 2009, 57: 4198 | [12] | Vinogradov A, Kaneko Y, Kitagawa K, et al.Cyclic response of ultrafine-grained copper at constant plastic strain amplitude[J]. Scr. Mater., 1997, 36: 1345 | [13] | Han W Z, Wu S D, Li S X, et al. Intermediate annealing of pure copper during cyclic equal channel angular pressing [J]. Mater. Sci. Eng., 2008, A483-484: 430 | [14] | Hongo T, Edalati K, Arita M, et al.Significance of grain boundaries and stacking faults on hydrogen storage properties of Mg2Ni intermetallics processed by high-pressure torsion[J]. Acta Mater., 2015, 92: 46 | [15] | Pal-Val P, Pal-Val L, Natsik V, et al.Giant young's modulus variations in ultrafine-grained copper caused by texture changes at post-SPD heat treatment[J]. Arch. Metall. Mater., 2015, 60: 3073 | [16] | Ren J W, Shan A D.Strengthening and stress drop of ultrafine grain aluminum after annealing[J]. Trans. Nonferrous Met. Soc. China, 2010, 20: 2139 | [17] | Zhao F X, Xu X C, Liu H Q, et al.Effect of annealing treatment on the microstructure and mechanical properties of ultrafine-grained aluminum[J]. Mater. Des., 2014, 53: 262 | [18] | Tsuji N, Ito Y, Saito Y, et al.Strength and ductility of ultrafine grained aluminum and iron produced by ARB and annealing[J]. Scr. Mater., 2002, 47: 893 | [19] | Wang J L, Shi Q N, Qian T C, et al.Recrystallized microstructural evolution of UFG copper prepared by asymmetrical accumulative rolling-bonding process[J]. Trans. Nonferrous Met. Soc., 2010, 20: 559 | [20] | Dai X Z, Liu J, Han J T.Study on the microstructure and mechanical properties of ultra-fine grain copper strip[J]. Shandong Metall., 2007, 28(5): 40(代秀芝, 刘靖, 韩静涛. 超细晶铜带材的组织及力学性能研究[J]. 山东冶金, 2007, 28(5): 40) | [21] | Zhou L, Shi Q N, Wang J L, et al.Effects of recrystallization annealing temperature and time on upon twins in pure copper by AARB[J]. Hot Work. Technol., 2012, 41(13): 29(周蕾, 史庆南, 王军丽等. 异步累积叠轧纯铜再结晶温度、时间对孪晶的影响[J]. 热加工工艺, 2012, 41(13): 29) | [22] | Wang J L, Shi Q N, Wang X Q.Study on microstructure and orientation evolution of ultra-fine grained copper prepared by asymmetrical accumulative rolling bonding (AARB) during annealing[J]. J. Mater. Eng., 2008, (11): 5(王军丽, 史庆南, 王效琪. 异步累积叠轧技术制备超细晶铜材退火过程组织及取向研究[J]. 材料工程, 2008, (11): 5) | [23] | Xie Z L, Wu X L, Xie J J, et al.Microstructures and compression properties of copper specimens deformed by high-pressure torsion[J]. Acta Metall. Sin., 2008, 44: 803(谢子令, 武晓雷, 谢季佳等. 高压扭转铜试样的微观组织与压缩性能[J]. 金属学报, 2008, 44: 803) | [24] | Fattah-Alhosseini A, Imantalab O, Mazaheri Y, et al.Microstructural evolution, mechanical properties, and strain hardening behavior of ultrafine grained commercial pure copper during the accumulative roll bonding process[J]. Mater. Sci. Eng., 2016, A650: 8 | [25] | Azushima A, Kopp R, Korhonen A, et al.Severe plastic deformation (SPD) processes for metals[J]. CIRP Ann. Manuf. Technol., 2008, 57: 716 |
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|