以5B02薄壁管材为研究对象, 进行330 ℃、380 ℃、400 ℃各保温1小时、2小时的退火实验。通过对不同试样进行拉伸实验发现:经过380 ℃, 2小时退火的试样塑性变形能力优于其他5组退火试样以及原始管材。通过对不同样品进行表面形貌及织构观察, 发现不同退火制度对管材内部织构有明显影响, 并导致材料塑性变形过程中滑移系种类及数量有所变化, 使得管材拉伸性能出现变化。
In this paper the thin-walled pipes of 5B02 aluminum alloy were annealed at 330 ℃、380 ℃、400 ℃ and tensile properties were tested.The results show that the plastic deformation capability of the sample which annealed at 380 ℃/2h is better than other five samples and original pipes.Comparing the appearance and the texture in these six samples, it was discovered that the different annealing treatments had different effects on the texture of pipes, and made the kinds and the numbers of slip systems change during the plastic deformation.Then the tension properties were changed.
[1]杨钢, 陈亮维, 王剑华, 等.FCC 金属的织构对力学性能的影响 [J].昆明理工大学学报, 2012, 37 (5):24-27.
[2]Duckham A, Knutsen R D, Engler O.Influence of deformation variables on the formation of copper-type shear bands in Al-Mg[J].Acta Materialia, 2001, 50(11):2881-2893.
[3]Agnew S.R., Yoo M.H., Tom C.N.Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y [J].Acta Mater, 2001, 49(20):4277-4289.
[4]KIM K.-H, LEE D.N.Analysis of deformation textures of asymmetrically rolled aluminum sheets [J].Acta Materialia, 2001, 49(13):2583-2595.
[5]汪祥鹏, 陈忠家, 耿德远, 等.退火工艺对5A02铝合金板材组织与性能的影响[J].轻合金加工技术, 2010, 38(7):35-38.
[6]M.B Chen, J.Li, Y.M.Zhao, et al.Comparison of texture evolution between different thickness layers in cold rolled Al-Mg alloy[J].Materials Characterization, 2011, 62(12):1188-1195.
[7]Vatne H.E, Daaland O, Nes E.On the formation of cube texture in aluminum[M].Materials Science Forum, 1994.
[8]杨德庄.位错与金属强化机制[M].哈尔滨:哈尔滨工业大学出版社, 1991.
[9]Maurice C, Driver J H.High temperature plane strain compression of cube oriented aluminum crystals[J].Acta Metallurgic, 1993, 41(6):1653-1664.
[10]Liu W C, Morris J G.Texture evolution of polycrystalline AA 5182 aluminum alloy with an initial{001}<110>texture during rolling[J].Scripta Materialia, 2002, 47(7):487-492.
[11]Jianguo Hu, Keisuke Ikeda, Tadasu Murakami.Effect of texture components on plastic anisotropy and formability of aluminum alloy sheets[J].Journal of Materials Processing Tech, 1998, 73(1):49-56.