Mg和Si含量对一种低频电磁铸造新型高强Al-Mg-Si-Cu合金组织性能的影响

doi:10.11901/1005.3093.2016.711

材料研究学报

2017, Vol. 31

Issue (10): 781-788 DOI: 10.11901/1005.3093.2016.711

研究论文

本期目录 | 过刊浏览

Mg和Si含量对一种低频电磁铸造新型高强Al-Mg-Si-Cu合金组织性能的影响

蒙毅¹(

), 崔建忠², 赵志浩², 朱远志¹

1 北方工业大学机械与材料工程学院北京 100144
2 东北大学材料电磁过程研究教育部重点实验室沈阳 110819

Effect of Mg- and Si-content on Microstructure and Mechanical Properties of a New High Strength Al-Mg-Si-Cu Alloy Prepared by Low Frequency Electromagnetic Casting

Yi MENG¹(

), Jianzhong CUI², Zhihao ZHAO², Yuanzhi ZHU¹

1 School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, China
2 Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China

引用本文:

蒙毅, 崔建忠, 赵志浩, 朱远志. Mg和Si含量对一种低频电磁铸造新型高强Al-Mg-Si-Cu合金组织性能的影响[J]. 材料研究学报, 2017, 31(10): 781-788.
Yi MENG, Jianzhong CUI, Zhihao ZHAO, Yuanzhi ZHU. Effect of Mg- and Si-content on Microstructure and Mechanical Properties of a New High Strength Al-Mg-Si-Cu Alloy Prepared by Low Frequency Electromagnetic Casting[J]. Chinese Journal of Materials Research, 2017, 31(10): 781-788.

全文: PDF(1212 KB) HTML

摘要:

结合金相组织观察及能谱分析、DSC热差分析、JMat Pro 5.0软件计算和室温力学性能测试,研究低频电磁铸造新型高强Al-Mg-Si-Cu合金铸态、挤压态和T6态的组织性能。结果表明,该新型合金系的均匀化温度和固溶温度可分别确定为540℃和550℃。Mg₂Si强化相能显著细化合金铸态组织且细化程度随其含量增大递增,而过量Si或过量Mg均能减弱细化剂和Mg₂Si相对合金铸态组织的细化作用。Mg的过量添加不会降低合金强度但可提高其延伸率至19%以上。该新型Al-Mg-Si-Cu合金中,当Mg质量分数为1.60%、Si质量分数为1.15%时,可获得较高强度(抗拉强度419 MPa、屈服强度362 MPa)而又不损害其塑性(延伸率18.75%)。

关键词 ：金属材料, 强韧性, 高强铝合金, 显微组织

Abstract：

The microstructure and mechanical properties of a new high strength Al-Mg-Si-Cu alloy prepared by low frequency electromagnetic casting (LFEC) alloy were studied by using optical microscope, energy dispersive spectroscopy (EDS), DSC analysis, JMat Pro 5.0 software and mechanical tests at room temperature. The results show that the temperatures of homogenization and solid solution for the alloy can be identified as 540℃ and 550℃ respectively. Mg₂Si phase could refine the as-cast grain size obviously and its effect on the as-cast grain refinement increases with the increase of Mg₂Si content in the alloy. While, the refining effect of Mg₂Si and other grain refiners on the grain sizes of ingots will be reduced by the excess of Mg or Si. However, the excess of Mg content in the alloy increases the elongation to more than 19% without reducing its strength. With the addition of 1.60% (mass fraction) Mg and 1.15% (mass fraction) Si to the Al-Mg-Si-Cu alloy exihibits higher strength (ultimate tensile strength 419 MPa and yield strength 362 MPa respectively) with undiminished ductility (elongation 18.75%).

Key words： metallic materials strength and ductility high strength aluminum alloy microstructure

收稿日期: 2016-10-08

ZTFLH:

TG146.2

基金资助:北京市优秀人才培养资助青年骨干个人项目(2015000020124G023)、北方工业大学“优秀青年教师培养计划”(XN072-017)和北方工业大学科研启动基金(1100000156041-2015)

作者简介:

作者简介蒙毅,男,1985年生,讲师,博士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.711 或 https://www.cjmr.org/CN/Y2017/V31/I10/781

表1 研究合金A~E化学成分

表2 铸造参数

图1 合金A~E的JMat Pro 5.0软件计算结果

图2 合金E均匀化前铸锭DSC曲线

图3 合金E铸态扫描电镜组织与能谱分析结果

图4 合金A~E铸锭心部阳极覆膜组织

图5 由图4获得的合金A~E铸态平均晶粒尺寸

图6 合金A~E挤压态试样纵向腐蚀金相组织

图7 合金A~E的T6态棒材纵向腐蚀金相组织

图8 合金A~E挤压棒材T6热处理前后力学性能结果

[1]	Gupta A K, Lloyd D J.Study of precipitation kinetics in a super purity Al-0.8%Mg-0.9%Si alloy using differential scanning calorimetry[J]. Metall. Mater. Trans. A, 1999, 30: 879
[2]	Hirose A, Todaka H, Yamaoka H, et al.Quantitative evaluation of softened regions in weld heat-affected zones of 6061-T6 aluminum alloy-characterizing of the laser beamwelding process[J]. Metall. Mater. Trans. A, 1999, 30: 2115
[3]	Eskin D G, Massardier V, Merle P.A study of high-temperature precipitation in Al-Mg-Si alloys with an excess of silicon[J]. J. Mater. Sci., 1999, 3: 820
[4]	Zhang J X, Gao A H, Chen H.Influence of alloying element on microstructure and property of Al-Mg-Si aluminum alloy[J]. Foundry Tech., 2007, 28(3): 373(张建新, 高爱华, 陈昊. 合金元素对Al-Mg-Si系铝合金组织及性能的影响[J]. 铸造技术, 2007, 28(3): 373)
[5]	Yang W C.Age-hardening behavior and microsturetural characterization of precipitates in Al-Mg-Si-Cu:6005A alloy [D]. Changsha: Central South University, 2011(杨文超. Al-Mg-Si-Cu系6005A合金的时效硬化行为及析出相的微观结构表征[D]. 长沙: 中南大学, 2011))
[6]	Gao Y J, Wang Q S, Wang N.Atomic bonding and strengthening effection of GP zones in Al-Mg-Si alloy[J]. Mining Metall. Eng., 2006, 5: 90(高英俊, 王庆松, 王娜. Al-Mg-Si合金GP区的原子键络与强化作用[J]. 矿冶工程, 2006, 5: 90)
[7]	Andersen S J, Marioara C D, Froseth A, et al.Crystalstructure of precipitate in the Al-Mg-Si alloy system and its relate to the phase[J]. Mater. Sci. Eng. A, 2005, 390: 129
[8]	Zhang H T, Nagaumi H, Zuo Y B.Coupled modeling of electromagnetic field, fluid flow, heat transfer and solidification during low frequency electromagnetic casting of 7XXX aluminum alloys Part 1: development of mathematical model and comparison with experimental results[J]. Mater. Sci. Eng. A, 2007, 448: 189
[9]	Zuo Y B, Cui J Z, Zhao Z H, et al.Mechanism of grain refinement of an Al-Zn-Mg-Cu alloy prepared by low-frequency electromagnetic casting[J]. J. Mater. Sci., 2012, 47: 5501
[10]	Liu M P, Wei J T, Li Y C, et al.Dynamic aging behavior and mechanical properties of an Al-Mg-Si aluminium alloy induced by equal channel angular pressing[J]. Chinese J. Mater. Res., 2016, 30(10): 722(刘满平, 韦江涛, 李毅超等. 等通道转角挤压Al-Mg-Si铝合金的动态时效特性和力学性能[J]. 材料研究学报, 2016, 30(10): 722)
[11]	Bergsma S C.Strengthening in the new aluminum alloy AA6069[J]. Mater. Sci. Eng. A, 1998, 254: 112
[12]	Bergsma S C, Kassner M E, Li X.The optimized mechanical properties of the new aluminum alloy AA6069[J]. J. Mater. Eng. Perform., 1996, 5: 111
[13]	Bergsma S C, Kassner M E. The new aluminum alloy AA6069[J]. Mater. Sci. Forum, 1996, 217-222: 1801
[14]	Li H L, Yuan X G, Wu M F, et al.As-cast microstructure of Al-0.8Mg-1.0Si-0.8Cu-0.3Mn-0.5Fe-0.15Zr alloy[J]. Foundry, 2014, 63(3): 211(李赫亮, 袁晓光, 吴明富等. Al-0.8Mg-1.0Si-0.8Cu-0.3Mn-0.5Fe-0.15Zr合金铸态组织研究[J]. 铸造, 2014, 63(3): 211)
[15]	Matsuda K, Uetani Y, Sato T, et al.Metastable phases in an Al-Mg-Si alloy containing copper[J]. Metall. Mater. Trans. A, 2001, 32: 1293
[16]	Liu H, Zhao G, Liu C M, et al.Phase constituents of some kinds of 6000-series aluminium alloys for automotive body sheets[J]. J. Northeastern Univ.(Nat. Sci.), 2005, 26(11): 1070(刘宏, 赵刚, 刘春明等. 几种6000系汽车板铝合金的结晶相[J]. 东北大学学报(自然科学版), 2005, 26(11): 1070)
[17]	Meng Y, Cui J Z, Zhao Z H, et al.Effect of vanadium on the microstructures and mechanical properties of an Al-Mg-Si-Cu-Cr-Ti alloy of 6XXX series[J]. J. Alloys Comp., 2013, 573: 102

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