超声波对AZ31B镁合金凝固组织和力学性能的影响
Effect of Ultrasonic Wave on Solidified Structure and Mechanical Properties of AZ31B Magnesium Alloy
摘 要
在铸造过程中引入超声场制备出了AZ31B镁合金铸锭,研究了超声波对镁合金凝固组织及轧制后性能的影响.结果表明:在铸造过程中施加超声场,能显著细化AZ31B镁合金铸锭的晶粒,其平均粒径由未加超声场时的250~350 μm减小至120 μm左右;施加超声场还能促进第二相的析出,强化基体相,提高材料的强度;将铸锭轧制成3.0 mm厚板材后镁合金的抗拉强度和屈服强度分别提高了18.6%和25.8%,而伸长率变化不明显.
铸造
超声波
晶粒尺寸
力学性能
AZ31B magnesium alloy
casting
ultrasonic wave
grain size
mechanical property
Abstract
The ingot of AZ31B magnesium alloy was prepared by casting in ultrasonic field.The effect of ultrasonic wave on solidified structure and properties of the alloy after rolling was studied.The results show that compared with the ingot casted without ultrasonic field the grain size of the AZ31B magnesium alloy ingot after casting in ultrasonic field could reduce from 250-350 μm to 120 μm.The ultrasonic vibration promoted the precipitation of the second phase which strengthened the base and improved the strength of the material.The tensile strength and yield strength were improved by 18.6% and 25.8% respectively after rolling the magnesium plate to 30 mm,and the elongation value had no significant change.
中图分类号 TG244
所属栏目 试验研究
基金项目 国家“973”计划资助项目(2007CB613706)
收稿日期 2009/6/24
修改稿日期 2010/4/5
网络出版日期
作者单位点击查看
备注毛大恒(1946-),男,湖南道县人,教授.
引用该论文: MAO Da-heng,QIU Ling,LI Ting,ZHANG Jia-fu,XUE Xin-ying. Effect of Ultrasonic Wave on Solidified Structure and Mechanical Properties of AZ31B Magnesium Alloy[J]. Materials for mechancial engineering, 2010, 34(8): 12～14
毛大恒,仇灵,李婷,张家富,薛新颖. 超声波对AZ31B镁合金凝固组织和力学性能的影响[J]. 机械工程材料, 2010, 34(8): 12～14
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参考文献
【1】翟春泉,曾小勤,丁文江,等.镁合金的开发与应用[J].机械工程材料,2001,25(1):6-10.
【2】吕宜振,尉胤红,曾小勤,等.镁合金铸造成形技术的发展[J].铸造,2000,49(7):383-387.
【3】卫英慧,焦少阳,侯利峰,等.铸造缺陷对镁合金压铸件性能的影响[J].机械工程材料,2008,32(1):84-86.
【4】付彭怀,蒋海燕,翟春泉.显微特征与缺陷对铸造镁合金AZ91D力学性能的影响[J].有色合金,2007(2):20-24.
【5】GAO De-ming,LI Zhi-jun,HAN Qing-you,et al.Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy[J].Materials Science and Engineering A,2009,502:2-5.
【6】RAMIREZ A,MA Q,DAVIS B,et al.Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys[J].Scripta Materialia,2008,59:19-22.
【7】李晓谦,刘诗月,蒋日鹏.超声场对7B50铝合金凝固组织的影响[J].上海有色金属,2008,29(2):92-95.
【8】李英龙,李宝绵,刘永涛,等.功率超声对Al-Si合金组织和性能的影响[J].中国有色金属学报,1999,9(4):719-722.
【9】马立群,舒光冀,陈锋.金属熔体在超声场中凝固的研究[J].材料科学与工程,1995,13(4):227.
【10】黎文献.镁及镁合金[M].长沙:中南大学出版社,2005:1-10.
【11】屠怡范,陈晶益,张波萍,等.AZ31铸造镁合金的物相和显微组织[J].铸造,2006,55(5):509-512.
【2】吕宜振,尉胤红,曾小勤,等.镁合金铸造成形技术的发展[J].铸造,2000,49(7):383-387.
【3】卫英慧,焦少阳,侯利峰,等.铸造缺陷对镁合金压铸件性能的影响[J].机械工程材料,2008,32(1):84-86.
【4】付彭怀,蒋海燕,翟春泉.显微特征与缺陷对铸造镁合金AZ91D力学性能的影响[J].有色合金,2007(2):20-24.
【5】GAO De-ming,LI Zhi-jun,HAN Qing-you,et al.Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy[J].Materials Science and Engineering A,2009,502:2-5.
【6】RAMIREZ A,MA Q,DAVIS B,et al.Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys[J].Scripta Materialia,2008,59:19-22.
【7】李晓谦,刘诗月,蒋日鹏.超声场对7B50铝合金凝固组织的影响[J].上海有色金属,2008,29(2):92-95.
【8】李英龙,李宝绵,刘永涛,等.功率超声对Al-Si合金组织和性能的影响[J].中国有色金属学报,1999,9(4):719-722.
【9】马立群,舒光冀,陈锋.金属熔体在超声场中凝固的研究[J].材料科学与工程,1995,13(4):227.
【10】黎文献.镁及镁合金[M].长沙:中南大学出版社,2005:1-10.
【11】屠怡范,陈晶益,张波萍,等.AZ31铸造镁合金的物相和显微组织[J].铸造,2006,55(5):509-512.
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