6061铝合金在多向锻造过程中显微组织与拉伸性能的演变
Evolution of Microstructure and Tensile Properties of 6061 Aluminum Alloy during Multi-directional Forging
摘 要
采用有限元模拟方法对250~350℃始锻温度下6061铝合金的多向锻造工艺进行模拟，得到了最优的多向锻造工艺，并通过显微组织观察和拉伸性能测试对模拟结果进行验证。结果表明：有限元模拟得到6061铝合金多向锻造工艺的最优始锻温度为300℃；在最优始锻温度下，经过4次循环多向锻造后，6061铝合金发生了完全的动态再结晶，晶粒高度细化且均匀分布，部分晶粒尺寸小于1 μm，6061铝合金获得超细晶组织；6061铝合金的拉伸性能得到显著提高，抗拉强度由锻造前的265.33 MPa增加到344.74 MPa，断后伸长率略有下降。
多向锻造
显微组织
拉伸性能
6061 aluminum alloy
multi-directional forging
microstructure
tensile property
Abstract
The multi-directional forging process of 6061 aluminum alloy at initial forging temperatures of 250-350℃ was simulated by finite element simulation method, and the optimal multi-direction forging process was obtained and verified by microstructure observation and tensile property testing. The results show that the optimal initial forging temperature of the multi-directional forging process of 6061 aluminum alloy obtained by finite element simulation was 300℃. At the optimal initial forging temperature, complete dynamic recrystallization of 6061 aluminum alloy occurred after 4 cycles of multi-directional forging; the grains were highly refined and distributed uniformly; size of some grains was less than 1 μm and 6061 aluminum alloy had ultra-fine grains. The tensile properties of 6061 aluminum alloy were significantly improved. The tensile strength increased from 265.33 MPa before forging to 344.74 MPa, and the elongation after fracture decreased slightly.
中图分类号 TG406 DOI 10.11973/jxgccl201807015
所属栏目 物理模拟与数值模拟
基金项目 国家自然科学基金资助项目（51465002，51675110）
收稿日期 2017/9/18
修改稿日期 2018/6/11
网络出版日期
作者单位点击查看
备注杨兴(1991-),男,湖北宜昌人,硕士研究生
引用该论文: YANG Xing,FENG Qiang,SUN Zanpeng,LIU Zhoupan,ZHENG Zhanguang,CHANG Yanjun. Evolution of Microstructure and Tensile Properties of 6061 Aluminum Alloy during Multi-directional Forging[J]. Materials for mechancial engineering, 2018, 42(7): 73～77
杨兴,冯强,孙赞朋,刘周攀,郑战光,常岩军. 6061铝合金在多向锻造过程中显微组织与拉伸性能的演变[J]. 机械工程材料, 2018, 42(7): 73～77
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】严伟林, 陈林, 黄锦元. 高强韧性变形铝合金的制备[J]. 热加工工艺, 2012, 41(16):42-44.
【2】VALIEV R Z, ISLAMGALIEV R K, ALEXANDROV I V. Bulk nanostructured materials from severe plastic deformation[J]. Progress in Materials Science, 2000, 45(2):103-189.
【3】魏兴, 刘为, 许锋,等. 20CrMnTi高压扭转有限元模拟及实验[J]. 热加工工艺, 2010, 39(20):12-15.
【4】YAMAMOTO M. Continuous static recrystallization in ultrafine-grained copper processed by multi-directional forging[J]. Materials Science & Engineering:A, 2008, 478(1):221-228.
【5】张兵, 袁守谦, 张西峰,等. 累积复合轧制工艺晶粒细化机制对1060工业纯铝组织和性能的影响[J]. 工程科学学报, 2008, 30(12):1378-1382.
【6】MOLODOVA X, BERGHAMMER R, GOTTSTEIN G, et al. Texture and microstructure evolution of ECAP processed AlMg1Mn0.14 alloy[J]. International Journal of Materials Research,2007, 98(3):158-166.
【7】冉敏,严红革,程相飞,等.Fe-17Mn-8Cr合金在多向锻造过程中显微组织与性能的变化[J].机械工程材料,2017,41(7):18-23.
【8】屈啸,许晓嫦,陈振湘,等.多向压缩变形对时效态铝铜合金组织和硬度的影响[J].机械工程材料,2011,35(3):64-67.
【2】VALIEV R Z, ISLAMGALIEV R K, ALEXANDROV I V. Bulk nanostructured materials from severe plastic deformation[J]. Progress in Materials Science, 2000, 45(2):103-189.
【3】魏兴, 刘为, 许锋,等. 20CrMnTi高压扭转有限元模拟及实验[J]. 热加工工艺, 2010, 39(20):12-15.
【4】YAMAMOTO M. Continuous static recrystallization in ultrafine-grained copper processed by multi-directional forging[J]. Materials Science & Engineering:A, 2008, 478(1):221-228.
【5】张兵, 袁守谦, 张西峰,等. 累积复合轧制工艺晶粒细化机制对1060工业纯铝组织和性能的影响[J]. 工程科学学报, 2008, 30(12):1378-1382.
【6】MOLODOVA X, BERGHAMMER R, GOTTSTEIN G, et al. Texture and microstructure evolution of ECAP processed AlMg1Mn0.14 alloy[J]. International Journal of Materials Research,2007, 98(3):158-166.
【7】冉敏,严红革,程相飞,等.Fe-17Mn-8Cr合金在多向锻造过程中显微组织与性能的变化[J].机械工程材料,2017,41(7):18-23.
【8】屈啸,许晓嫦,陈振湘,等.多向压缩变形对时效态铝铜合金组织和硬度的影响[J].机械工程材料,2011,35(3):64-67.
相关信息
