钪、锆变质处理和脉冲磁场对Al-3Fe合金凝固组织及硬度的影响
Effects of Sc, Zr Modification and Pulse Magnetic Field on Solidified Structure and Hardness of Al-3Fe Alloy
摘 要
以高纯铝和Al-10Fe中间合金为原料制备Al-3Fe合金,在熔炼过程中加入质量分数分别为0.3%和0.1%的钪和锆元素对熔体进行变质处理,在凝固过程施加不同电压(100,200,300V)、不同频率(2.5,5,10Hz)的脉冲磁场,研究了变质处理和脉冲磁场对Al-3Fe合金凝固组织和硬度的影响。结果表明:钪、锆变质处理,脉冲磁场(100V,5Hz)及二者复合处理均可以有效细化合金的凝固组织,其中复合处理的细化效果最好,Al3Fe相由未处理时粗大的长针状变为细小的短棒状或短针状。复合处理条件下,随着脉冲电压的增加,Al3Fe相长度先增加后减小;随着脉冲频率的增加,Al3Fe相长度减小。变质+脉冲磁场复合处理后,合金的布氏硬度提高最明显。
脉冲磁场
凝固组织
硬度
Al-3Fe alloy
pulse magnetic field
solidified structure
hardness
Abstract
Al-3Fe alloy was prepared with high-purity aluminum and Al-10Fe master alloy as raw materials. In the melting process, 0.3 wt% Sc and 0.1 wt% Zr were added to modify the melt. During the solidification process, pulsed magnetic field with different voltages (100, 200, 300 V) and frequencies (2.5, 5, 10 Hz) were applied. Effects of modification and pulsed magnetic field on the solidified structure and hardness of Al-3Fe alloy were studied. The results show that Sc and Zr modification, applying pulsed magnetic field(100 V, 5 Hz) and their combination could refine solidified structure of the alloy effectively, and the composite treatment had the best refinement effect; Al3Fe phase changed from coarse long needle under untreatment conditions to fine short rod or short needle. Under composite treatment, the length of Al3Fe phase increased first and then decreased with the increase of pulse voltage, and decreased with the increase of pulse frequency. After modification and pulsed magnetic field composite treatment, Brinell hardness of the alloy increased the most.
中图分类号 TG146.2 DOI 10.11973/jxgccl202212008
所属栏目 试验研究
基金项目 上海航天科技创新基金资助项目(SAST2019-130)
收稿日期 2021/10/22
修改稿日期 2022/11/10
网络出版日期
作者单位点击查看
联系人作者周全教授
备注李志伟(1997-),男,江西南昌人,硕士研究生
引用该论文: LI Zhiwei,ZHOU Quan,DONG Jianjun,CHEN Leping,WEI Chenyang. Effects of Sc, Zr Modification and Pulse Magnetic Field on Solidified Structure and Hardness of Al-3Fe Alloy[J]. Materials for mechancial engineering, 2022, 46(12): 50～54
李志伟,周全,董建军,陈乐平,魏陈阳. 钪、锆变质处理和脉冲磁场对Al-3Fe合金凝固组织及硬度的影响[J]. 机械工程材料, 2022, 46(12): 50～54
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【2】GOULART P R,SPINELLI J E,CHEUNG N,et al.The effects of cell spacing and distribution of intermetallic fibers on the mechanical properties of hypoeutectic Al-Fe alloys[J].Materials Chemistry and Physics,2010,119(1/2):272-278.
【3】刘波,王书生,高鹤,等.半固态成形Al-Fe基合金组织与性能[J].特种铸造及有色合金,2008,28(增刊):382-385. LIU B,WANG S S,GAO H,et al.Microstructure and properties of Al-Fe based alloy prepared by semi-solid forming technology[J].Special Casting ＆ Nonferrous Alloys,2008,28(S1):382-385.
【4】KRASNOWSKI M,KULIK T.Nanocrystalline and amorphous Al-Fe alloys containing 60-85% of Al synthesised by mechanical alloying and phase transformations induced by heating of milling products[J].Materials Chemistry and Physics,2009,116(2/3):631-637.
【5】韩逸,班春燕,巴启先,等.交流磁场对Al-Fe合金凝固组织的影响[J].东北大学学报,2006,27(9):991-994. HAN Y,BAN C Y,BA Q X,et al.Effect of alternating magnetic field on microstructure of Al-Fe alloy[J].Journal of Northeastern University,2006,27(9):991-994.
【6】陈乐平,李彩虹,周全,等.脉冲磁场-机械振动复合处理细化Al-5%Fe合金凝固组织[J].铸造技术,2015,36(1):137-140. CHEN L P,LI C H,ZHOU Q,et al.Microstructure refinement of Al-5%Fe alloy by compound treatment of pulsed magnetic filed and mechanical vibration[J].Foundry Technology,2015,36(1):137-140.
【7】陈东风,曹志强,张婷,等.电磁分离制备过共晶Al-5%Fe自生表层复合材料[J].功能材料,2007,38(4):529-531. CHEN D F,CAO Z Q,ZHANG T,et al.Hypereutectic Al-5%Fe in situ surface layer composite produced by electromagnetic separation[J].Journal of Functional Materials,2007,38(4):529-531.
【8】梅国宏,朱立光,张庆军,等.脉冲磁场细晶化技术的研究现状[J].铸造技术,2015,36(2):403-406. MEI G H,ZHU L G,ZHANG Q J,et al.Research status of grain refinement technology with pulsed magnetic field[J].Foundry Technology,2015,36(2):403-406.
【9】马修军,尹健,周志坚,等.脉冲磁场在金属材料制备中的应用研究现状与展望[J].铸造技术,2014,35(12):2763-2766. MA X J,YIN J,ZHOU Z J,et al.Review on application of pulsed magnetic field in metallic materials fabrication[J].Foundry Technology,2014,35(12):2763-2766.
【10】周振平,李荣德,马建超.热速处理对Al-Fe合金组织与性能的影响[J].中国有色金属学报,2004,14(8):1420-1425. ZHOU Z P,LI R D,MA J C.Effect of thermal rate treatment on as-cast microstructure and mechanical property of Al-Fe alloy[J].The Chinese Journal of Nonferrous Metals,2004,14(8):1420-1425.
【11】王剑,周榆力.Al-Fe合金组织优化及相关机制研究进展[J].西华大学学报(自然科学版),2017,36(6):73-82. WANG J,ZHOU Y L.Research progress on organizational optimization and related mechanisms of Al-Fe alloys[J].Journal of Xihua University (Natural Science Edition),2017,36(6):73-82.
【12】谭震林,周全,袁源平,等.磁场与变质对Al-Si-Cu-Mg合金组织及性能的影响[J].特种铸造及有色合金,2019,39(5):544-548. TAN Z L,ZHOU Q,YUAN Y P,et al.Effects of pulsed magnetic field and modification on microstructure and mechanical properties of Al-Si-Cu-Mg alloy[J].Special Casting ＆ Nonferrous Alloys,2019,39(5):544-548.
【13】刘飞,尹健,邵琦,等.脉冲磁场对高含量自生Mg2Si/Mg-Al基复合材料凝固组织的影响[J].材料导报,2019,33(2):293-297. LIU F,YIN J,SHAO Q,et al.Improved solidification structure of in situ Mg2Si/Mg-Al composites by applying pulsed magnetic field:a comparative study[J].Materials Reports,2019,33(2):293-297.
【14】牛晓武,赵志龙,刘林.强脉冲磁场对Al-Cu共晶合金定向凝固组织的影响[J].热加工工艺,2006(1):4-6. NIU X W,ZHAO Z L,LIU L.Effect of strong pulsed magnetic field on unidirectional solidification microstructure of Al-Cu eutectic alloy[J].Hot Working Technology,2006(1):4-6.
【15】郭连平,尹健,陈乐平,等.脉冲磁场对Mg-Gd-Zn-(Zr)合金组织和性能的影响[J].特种铸造及有色合金,2013,33(5):480-483. GUO L P,YIN J,CHEN L P,et al.Effect of the pulsed magnetic field on the solidification microstructures and mechanical properties of Mg-Gd-Zn-(Zr)alloy[J].Special Casting ＆ Nonferrous Alloys,2013,33(5):480-483.
【16】丁杰,孙兆鑫,潘海成.变质剂对铝铁合金组织和性能的影响[J].科技视界,2019(10):110-111. DING J,SUN Z X,PAN H C.The effect of alterative on microstructure and properties of Al-Fe alloy[J].Science ＆ Technology Vision,2019(10):110-111.
【17】潘海成.微量钪锆复合对铝铁合金变质作用的电子理论研究[D].沈阳:沈阳工业大学,2013. PAN H C.Research on electronic theory of trace scandium and zirconium compound alloying for Al-Fe alloy[D].Shenyang:Shenyang University of Technology,2013.
【18】彭帅,陈乐平,周全.脉冲磁场下Al-5Fe合金凝固组织的细化[J].特种铸造及有色合金,2013,33(4):384-387. PENG S,CHEN L P,ZHOU Q.Refinement of solidification structure in Al-5Fe alloy by pulsed magnetic field[J].Special Casting ＆ Nonferrous Alloys,2013,33(4):384-387.
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