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材料工程  2016, Vol. 44 Issue (6): 24-30    DOI: 10.11868/j.issn.1001-4381.2016.06.004
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
超声铸造7085铝合金在热处理过程中的相变行为
李瑞卿1,2, 李晓谦1,2, 陈平虎1,2, 黄明哲1,2, 董方1,2
1. 中南大学 高性能复杂制造国家重点实验室, 长沙 410083;
2. 中南大学 机电工程学院, 长沙 410083
Phase Transformation Behavior of Ultrasonic-treated 7085 Aluminum Alloy During Heat Treatment
LI Rui-qing1,2, LI Xiao-qian1,2, CHEN Ping-hu1,2, HUANG Ming-zhe1,2, DONG Fang1,2
1. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China;
2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
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摘要 采用OM,SEM,EDS和DSC等研究超声外场下凝固的结晶相在热处理过程中的相变行为,并利用扫描电镜原位加热台实时观察结晶相转变过程。结果表明:铝熔体经过超声外场处理后,晶粒组织由粗大树枝晶向细小等轴晶转变;超声铸锭的熔化焓为4.60J/g,低于常规铸锭的6.52J/g;超声外场处理后,铸锭中的θ相+T相共晶组织减少了29%;该铝合金铸锭中有θ相、T相、Al3Fe相及Mg2Si相4种结晶相,样品在DSC升温过程中,θ相颗粒逐渐溶入基体,T相转变成S相后在升温至高温峰时溶入基体,Al3Fe相在低温峰时转变成Al7Cu2Fe相残留在铸锭中,Mg2Si相未见明显变化。
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李瑞卿
李晓谦
陈平虎
黄明哲
董方
关键词 超声铸造结晶相DSC分析热处理    
Abstract:The transformation behavior of secondary phases in conventional ingot and ultrasonic ingot during heat-treatment process were investigated by OM, SEM, EDS and DSC. Crystalline phase transition was observed by SEM with in situ heating station. The experiment results indicate that the ultrasonic melt treatment transforms from columnar crystals to equiaxed crystals, and obtains fine and uniform grains. The melting enthalpy of ultrasonic ingot is 4.60J/g, while the melting enthalpy of conventional ingot is 6.52J/g, combined with EDS analysis results, θ phase and T phase are found to be reduced by 29% after ultrasonic melt treatment. The secondary phases in the ingots include θ phase, T phase, Al3Fe phase and Mg2Si phase. θ phase is dissolved into matrix gradually, T phase transforms to S phase and is dissolved into matrix at high peak temperature, Al3Fe phase transforms to Al7Cu2Fe phase at low peak temperature and remains in the ingots, Mg2Si phase changes nothing during DSC analysis process.
Key wordsultrasonic casting    crystalline phase    DSC analysis    heat treatment
收稿日期: 2015-05-13      出版日期: 2016-06-13
中图分类号:  TG166.3  
通讯作者: 李瑞卿(1987-),男,博士研究生,研究方向:超声波辅助铸造工艺及工业化研究,联系地址:湖南省长沙市中南大学新校区中铝科技大楼B-406(410083),E-mail:lll87430@126.com     E-mail: lll87430@126.com
引用本文:   
李瑞卿, 李晓谦, 陈平虎, 黄明哲, 董方. 超声铸造7085铝合金在热处理过程中的相变行为[J]. 材料工程, 2016, 44(6): 24-30.
LI Rui-qing, LI Xiao-qian, CHEN Ping-hu, HUANG Ming-zhe, DONG Fang. Phase Transformation Behavior of Ultrasonic-treated 7085 Aluminum Alloy During Heat Treatment. Journal of Materials Engineering, 2016, 44(6): 24-30.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.06.004      或      http://jme.biam.ac.cn/CN/Y2016/V44/I6/24
[1] HAROLD L, MICHAEL R. The effects of laser peening on high-cycle fatigue in 7085-T7651 aluminum alloy[J]. Materials Science and Engineering:A, 2008, 477(1-2):208-216.
[2] HE L Z, LI X H, ZHU P, et al. Effects of high magnetic field on the evolutions of constituent phases in 7085 aluminum alloy during homogenization[J]. Materials Characterization, 2012, 71(5):19-23.
[3] CHEN S Y, CHEN K H, PENG G S, et al. Effect of initial microstructure on hot workability of 7085 aluminum alloy[J]. Transactions of Nonferrous Metals Society of China, 2013, 23(4):956-963.
[4] 乔翔,张志高,李建涛,等. 铸造过程中超声处理对7050铝合金变形及热处理的影响.[J]. 金属热处理, 2011, 36(12):62-65. QIAO X, ZHANG Z G, LI J T, et al.Effect of ultrasonic treatment during casting on deformation and heat treatment of 7050 aluminum alloy[J]. Heat Treatment of Metals, 2011, 36(12):62-65.
[5] 何正林,高文理,陆政,等. 热处理对7A85铝合金组织和性能的影响[J]. 材料工程,2015,43(8):13-18. HE Z L, GAO W L, LU Z, et al. Effects of heat treatment on microstructure[J]. Journal of Materials Engineering, 2015,43(8):13-18.
[6] 刘铭,汝继刚,臧金鑫,等. 新型Al-Zn-Mg-Cu铝合金热稳定性研究[J].材料工程,2015,43(4):13-18. LIU M, RU J G, ZANG J X, et al. Thermal stability of new style Al-Zn-Mg-Cu aluminum alloy[J]. Journal of Materials Engineering, 2015,43(4):13-18.
[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):47-50. LI X Q, LIU S Y, JIANG R P. Effect of ultrasonic field on solidified structure of 7B50 aluminum alloy[J].Shanghai Nonferrous Metals, 2008, 29(2):47-50.
[8] 蒋日鹏,李晓谦,李开烨,等. 超声对铝合金凝固传热与组织形成的影响与作用机制[J]. 中南大学学报(自然科学版), 2012, 43(10):3807-3813. JIANG R P, LI X Q, LI K Y, et al. Effect of ultrasonic on heat transfer and microstructure formation of aluminum alloy during solidification and its mechanism[J].Journal of Central South University (Science and Technology),2012, 43(10):3807-3813.
[9] 崔莹,李晓谦. 超声对7050铝合金显微组织及溶质固溶度的影响[J]. 中南大学学报(自然科学版), 2012, 43(9):3420-3425. CUI Y, LI X Q. Effects of ultrasonic on microstructures and solid solubility of main solute elements in aluminium alloy 7050[J]. Journal of Central South University (Science and Technology), 2012, 43(9):3420-3425.
[10] 刘清梅. 超声波对金属凝固特性及组织影响的研究[D]. 上海:上海大学, 2007. LIU Q M. Research of ultrasonic treatment on solidification characteristics and structure of metals[D]. Shanghai:Shanghai University, 2007.
[11] KHALIFA W, TSUNEKAWA Y, OKUMIYA M. Effects of ultrasonic treatment on the Fe-intermetallic phases in ADC12 die cast alloy[J]. Journal of Materials Processing Technology, 2010, 210(15):2178-2187.
[12] ZHANG Y B, JIE J C, GAO Y, et al. Effects of ultrasonic treatment on the formation of iron-containing intermetallic compounds in Al-12%Si-2%Fe alloys[J]. Intermetallics, 2013, 42(11):120-125.
[13] 李晓谦,蒋日鹏,张立华,等. 超声施振深度和冷却方式对纯铝凝固组织的影响[J]. 北京理工大学学报, 2008, 28(4):290-293. LI X Q, JIANG R P, ZHANG L H, et al. Effects of depth and method of cooling upon applying ultrasonic vibration on the solidification structures of pure aluminum[J]. Transactions of Beijing Institute of Technology,2008, 28(4):290-293.
[14] ESKIN G I, MAKAROV G S. Effect of cavitation melt treatment on the structure refinement and property improvement in cast and deformed hypereutectic Al-Si alloys[J]. Materials Science Forum, 1997, 242(1):65-70.
[15] 王祝堂,田荣璋. 铝合金及其加工手册[M]. 长沙:中南大学出版社, 2005. 67-117.
[16] MONDAL C, MUKHOPADHYAY A K. On the nature of T(Al2Mg3Zn3) and S(Al2CuMg) phases present in as-cast and annealed 7055 aluminum alloy[J]. Materials Science and Engineering:A, 2005, 391(1):367-376.
[17] 张学习,王德尊,姚忠凯. 铝基复合材料凝固成核的差示扫描量热法(DSC)研究[J]. 复合材料学报, 2003, 20(4):18-22. ZHANG X X, WANG D Z, YAO Z K. DSC study of the nucleation phenomenon in aluminum metal matrix composites[J]. Acta Materiae Compositae Sinica,2003,20(4):18-22.
[18] 高凤华,李念奎,田妮,等. 7050铝合金半连续铸锭在DSC分析过程中组织的变化[J]. 材料与冶金学报,2008,7(3):211-214. GAO F H, LI N K, TIAN N, et al. Microstructural evolution of a 7050 semicontinuous casting ingot during DSC analysis process[J]. Journal of Materials and Metallurgy, 2008,7(3):211-214.
[19] 王祝堂. 变形铝合金热处理工艺[M]. 长沙:中南大学出版社, 2011.
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