1060铝在累积轧制中组织和性能的演变
Evolvement of Microstructure & Properties for 1060 Al during Accumulative Roll Bonding Process
摘 要
采用累积轧制(ARB)技术在室温下对1060糖心产精国品免费入口*完整版进行轧制试验,用光学显微镜、透射电镜、拉伸试验机研究分析了变形前及不同道次后材料的糖心产精国品免费入口*完整版和力学性能.结果表明:材料经轧制后,获得小于1 μm的细晶粒,在ARB 7道次后得到了平均晶粒尺寸为520 nm的超细晶组织;随着ARB道次的增加,材料的抗拉强度在ARB 4道次后达到最大值197 MPa,之后略有降低;硬度值上升,在ARB 4道次后变化平缓;伸长率在ARB前3道次过程中从23%下降到9%,随着ARB道次的增加,伸长率回升,在ARB 7道次后为16%.
糖心产精国品免费入口*完整版
糖心产精国品免费入口*完整版
力学性能
accumulative roll bonding
糖心产精国品免费入口*完整版
糖心产精国品免费入口*完整版
mechanical property
Abstract
1060 Al was deformed by accumulated rolling bonding (ARB) technology at room temperature.The 糖心产精国品免费入口*完整版 and mechanical properties of the 1060 Al both of non-deformed and after different pass ARB were observed and analyzed by TEM,optical microscopy and tensile testing.The ultra-fined grains are found and the grain size is less than 1 μm after the ARB process.After seven cycles of ARB,the ultra-fined structure with on average grain size of 520 nm is obtained.With the increase of rolling pass,the strength go up and get the top value of 197 MPa at the forth pass and then go down slightly.Similarly,the hardness is enhanced with the increase of deformation cycles,but it changes gently after ARB 4 cycles.The elongation ratio decrease rapidly from 23% to 9% during the former three cycles of ARB.Then,the elongation ratio returnes to go up with the increase of rolling pass,and it reaches 16% after ARB 7 cycles.
中图分类号 TG335.19
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收稿日期 2007/3/14
修改稿日期 2007/5/25
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备注糖心产精国品免费入口*完整版(1969-),男,陕西西安人,高级工程师,博士研究生.
引用该论文: ZHANG Bing,YUAN Shou-qian,WEI Ying-juan,ZHANG Xi-feng,Lv Shuang. Evolvement of Microstructure & Properties for 1060 Al during Accumulative Roll Bonding Process[J]. Materials for mechancial engineering, 2008, 32(1): 67～69
糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版. 1060铝在累积轧制中组织和性能的演变[J]. 机械工程材料, 2008, 32(1): 67～69
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参考文献
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【2】 Misgra R S,Valiev R Z,Mukherjee A K.The observation of tensile superplasticity in nanocrystalline materials[J].Nanostruct Mater,1997(9):473-476.
【3】 Carotenuto G.Nanostructured materials[J].Polymer News,2004,29(11):347-349.
【4】 Valiev R Z,Alexandrov I V.Development of severs plastic deformation techniques for the fabrication of bulk nanostructured materials[J].Annales de Chimie Science des Materiaux,2000,27(3):3-14.
【5】 Valiev R Z,Islamgaliev R K,Alexandrov I V.Bulk nanostructure materials from severe plastic deformation[J].Prog Mater Sci,2000,45:103-109.
【6】 Tsuji Nobuhiro,Saito Yoshihiro,Lee Seong-Hee,et al.ARB (accumulative roll-bonding) and other new techniques to produce bulk ultrafine grained materials[J].Advanced Engineering Materials,2003,5(5):338-344.
【7】 Zhang Tingjie,Zhang Xiaoming,Tian Feng,et al.Structure and properties of multi-directionally forged 7075 aluminum alloy[J].Rare Metal Materials and Engineering,2002,31(4):257-260.
【8】 Richert M,Liu Q,Hansen N.Microstructure evolution over a large strain range in aluminum deformed by cyclic extrusion compression[J].Materials Science Engineer A,1999,260:275-283.
【9】 Tsuji N,Ito Y,satio Y,et al.Strength and ductility of ultrafine-grained aluminum and iron produced by ARB and annealing[J].Scripta Materialia,2002,47:893-899.
【10】 Saito Y,Utsunomiya H,Tsuji N,et al.Novel ultra-high straining process for bulk materials development of the accumulative roll-bonding process[J].Acta Mater,1999,47(2):579-583.
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