Abnormal macrosegregation induced by formed porosity during solidification of an Al-Sn alloy

Lei Zhao; Hengcheng Liao; Ye Pan

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Abnormal macrosegregation induced by formed porosity during solidification of an Al-Sn alloy

机译：Al-Sn合金凝固过程中形成的孔隙引起的异常宏观偏析

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This paper reports in situ investigation of porosity formation and its influence upon the subsequent microstructure development during solidification of an Al-6 wt.% Sn alloy using X-ray imagining and directional solidification and X-ray computed tomography techniques. The growing porosity induces abnormal macrosegregation of Sn above the pores, which is attributed to mass transportation caused by local variations in thermal and solution concentration. The motion of pores due to the abnormal macrosegregation during solidification is also described.

机译：本文报道了使用X射线成像和定向凝固以及X射线计算机断层摄影技术对Al-6 wt。％Sn合金凝固过程中孔隙形成及其对随后的微观组织发展的影响进行的原位研究。不断增长的孔隙度会导致孔上方Sn出现异常的宏观偏析，这是由于热量和溶液浓度的局部变化所引起的质量传输。还描述了由于凝固过程中异常的宏观偏析引起的孔的运动。

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《Scripta materialia》 |2011年第9期|共4页
作者
Lei Zhao; Hengcheng Liao; Ye Pan;
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原文格式 PDF
正文语种 eng
中图分类冶金工业;
关键词
Porosity; Macrosegregation; Solidification; Aluminum alloy; Casting;

机译：孔隙率;宏观聚集;凝固;铝合金;铸造;

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2. Abnormal macrosegregation induced by formed porosity during solidification of an Al-Sn alloy [J] . Lei Zhao, Hengcheng Liao, Ye Pan Scripta materialia . 2011,第9期

机译：Al-Sn合金凝固过程中形成的孔隙引起的异常宏观偏析
3. Macrosegregation and Porosity during Directional Solidification of aTernary Al-9wt%Si-3wt%Cu Alloy [J] . L.G. Gomes, P. D. Jacome, I.Ferreira, Diffusion and Defect Data. Solid State Data, Part A. Defect and Diffusion Forum . 2011,第Pta1期

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4. An asymptotic approach to solidification shrinkage-induced macrosegregation in the continuous casting of binary alloys [J] . M. Vynnycky, S. Saleem, H. Fredriksson Applied Mathematical Modelling . 2018,第FEBa期

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5. Macrosegregation and Porosity during Directional Solidification of a Ternary AI-9wtSi-3wtCu Alloy [C] . L.G. Gomes, P. D. Jacome, I.L. Ferreira, Diffusion in solids and liquids VI . 2010

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6. Modeling of the formation of macrosegregation during solidification of binary alloys. [D] . Diao, Qizhong. 1994

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7. Formation mechanism of axial macrosegregation of primary phases induced by a static magnetic field during directional solidification [O] . Xi Li, Yves Fautrelle, Zhongming Ren, -1

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机译：抗畴和籽粒输送对Al-22％Cu合金凝固过程中粉碎机和微观结构形成的数值研究
9. Unidirectional solidification of a binary model alloy and the effects of induced fluid motion. Annual performance report [R] . Neilson, D G, Incropera, F P 1992

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Abnormal macrosegregation induced by formed porosity during solidification of an Al-Sn alloy

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