变形及热处理对含锆的铝镁硅铜合金显微组织的影响
Effect of Deformation and Heat Treatment on Microstructure of Al-Mg-Si-Cu Alloy Containing Zr
摘 要
采用光学显微镜、扫描电镜、透射电镜和X射线衍射仪等研究了Al-0.8Mg-1.0S-0.8Cu-0.3Mn-0.5Fe-0.15Zr合金板材在加工过程中及T6热处理后的组织变化。结果表明: 热轧时, 随着变形量的增大, 晶粒越来越细密扁平, 再结晶晶粒明显增多; 冷轧后粗大的第二相完全破碎, 析出相主要为Mg2Si、Al9Fe0.84Mn2.16Si、Al8Fe2Si、AlCu及Al3Zr相; 经T6热处理后的合金晶粒细小, 接近等轴状, 与冷轧后组织相比, 析出相种类变化不大, 仅多了AlCuMgSi相。
轧制
变形量
T6热处理
显微组织
析出相
AlMgSi alloy
rolling
deformation
T6 heat treatment
microstructure
precipitation
Abstract
The microstructure of Al-0.8Mg-1.0Si-0.8Cu-0.3Mn-0.5Fe-0.15Zr alloy sheets during processing and after T6 heat treatment were studied by optical microscopy(OM), scanning electron microscopy(SEM), transmission electron microscopy(TEM), and X-ray diffraction (XRD) analysis. The results indicate that with the increase of deformation, the grains became more and more small and flat during hot rolling. Meanwhile, the quantity of recrystallized grains increased significantly. After cold rolling the coarse second phases fragmented, and the precipitations mainly existing in alloy sheet were Mg2Si, Al9Fe0.84Mn2.16Si, Al8Fe2Si, AlCu and Al3Zr. After T6 heat treatment, grains in the alloy were refined and close to equiaxed, and the precipitation phase sorts did not change except AlCuMgSi phase in comparion with the alloy after cool rolling.
中图分类号 TG339
所属栏目 试验研究
基金项目 辽宁省科技攻关计划项目(2010221007); 沈阳市科技平台建设项目(1081104-1-00)
收稿日期 2013/9/22
修改稿日期 2014/8/1
网络出版日期
作者单位点击查看
备注李赫亮(1973-), 女, 吉林长春人, 副教授, 博士研究生。
引用该论文: LI He-liang,YUAN Xiao-guang,WU Ming-fu,HUANG Hong-jun. Effect of Deformation and Heat Treatment on Microstructure of Al-Mg-Si-Cu Alloy Containing Zr[J]. Materials for mechancial engineering, 2014, 38(10): 28～31
李赫亮,袁晓光,吴明富,黄宏军. 变形及热处理对含锆的铝镁硅铜合金显微组织的影响[J]. 机械工程材料, 2014, 38(10): 28～31
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【3】刘宏, 赵刚, 刘春明, 等.6000系铝合金组织性能的研究进展[J].机械工程材料, 2004, 28(6): 1-4.
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【5】MIAO W F, LAUGHLIN D E.Effects of Cu content and preaging on precipitation characteristics in aluminum alloy 6022[J].Metallurgical and Materials Transactions: A, 2000, 31: 361-371.
【6】EDWARDS G A, STILLER K, DUNLOP G L, et al. The precipitation sequence in Al-Mg-Si Alloys[J].Acta Mater, 1998, 46(11): 3893-3904.
【7】BUHAA J, LUMLEY R N, CROSKY A G, et al. Secondary precipitation in an Al-Mg-Si-Cu alloy[J].Acta Materialia, 2007, 55: 3015-3024.
【8】DANIEL BRYANT J. The Effects of preaging treatments on aging kinetics and mechanical properties in AA6111 aluminum autobody sheet[J].Metallurgical and Materials Transactions: A, 1999, 30: 1999-2006.
【9】金曼, 邵光杰.Cu对6082A1-Mg-Si合金时效初期析出相的影响[J].中国有色金属学报, 2009, 19(1): 1-7.
【10】高琪妹, 杨静生, 于晓丹.6111铝合金板材加工过程中组织的演变[J].热加工工艺, 2008, 37(12): 28-30.
【11】谢优华, 杨守杰, 戴圣龙, 等.锆元素在铝合金中的应用[J].航空材料学报, 2002, 22(4): 56-61.
【12】谢优华, 扬守杰, 戴圣龙, 等.含锆超高强铝合金的研究及发展概况[J].材料导报, 2002, 16(5): 8-10.
【13】钟继发, 郑子樵, 罗先甫, 等.时效工艺对含微量钪和锆2023铝合金组织和力学性能的影响[J].机械工程材料, 2013, 37(8): 72-76.
【14】陈康华, 陈送义, 彭国胜, 等.变形程度对7150铝合金再结晶及性能的影响[J].特种铸造及有色合金, 2010, 30(2): 103-107.
【15】李赫亮, 袁晓光, 吴明富, 等.轧制工艺对Al-Mg-Si合金板材力学性能的影响[J].特种铸造及有色合金, 2013, 33(2): 108-111.
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