Effect of casting speed on surface quality of horizontal direct chill casting 7075 aluminum alloy ingot

金属学报(英文版), 2011, 24(5): 399-404.

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China

基金项目: financially supported by Introducing Talents of Discipline to Universities(B07015) the Ministry of Education New Teachers Fund Project(20090042120001) Central University Basic R&D Operating Expenses(N100409006)

Effect of casting speed on surface quality of horizontal direct chill casting 7075 aluminum alloy ingot

Qingfeng ZHU ^1, ,

1.Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China

Keywords： Horizontal direct chill casting

7075 aluminum alloy ingot with the diameter of 100 mm has been produced by horizontal direct chill casting in different casting speed.The effect of the casting speed on the ingot surface and subsurface layer was studied by surface observation and subsurface structure analysis.It was found that increasing the casting speed results in the adding of segregation knots in the ingot surface.The thickness of the dendrite microstructure layer in the subsurface reduces with increasing the casting speed.And the elements of Zn,Cu and Mg enrich in the coarse dendrite microstructure layer of the ingot.

参考文献

[1]	A. Larouche;M. Lane;M. DiCiano .Understanding T-Ingot Horizontal DC Casting Using Process Modelling[J].Materials Science Forum,2006(Pt.2):1461-1466.
[2]	Q. F. Zhu;Z. H. Zhao;J. Z. Cui .Effect of combined application of electromagnetic fields on horizontal direct chill casting of 7050 aluminium alloy[J].Materials Science and Technology,2008(5):560-566.

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Effect of casting speed on surface quality of horizontal direct chill casting 7075 aluminum alloy ingot

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