Microstructure Evolution of Cu-15Ni-8Sn Alloy Prepared by Vertical Semi-continuous Casting with EMS

Microstructure Evolution of Cu-15Ni-8Sn Alloy Prepared by Vertical Semi-continuous Casting with EMS

In the present study, vertical semi-continuous casting equipped with the electromagnetic stirring (EMS) was applied in order to control the solidification process and obtain the anticipated homogeneous microstructure for Cu-15Ni-8Sn alloy. The experimental results indicate that the microstructure of...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-10, Vol.424 (1), p.12073
Main Authors: Guo, Zhongkai, Jie, Jinchuan, Yue, Shipeng, Li, Tingju, Guo, Qingtao
Format: Article
Language:eng
Subjects:
Casting alloys
Continuous casting
Copper
Copper base alloys
Cu-15Ni-8Sn
Electromagnetic stirring
Evolution
Gamma phase
Grain boundaries
Levitation casting
Microstructure
Microstructure evolution
Solid solutions
Solidification
Tin
Vertical semi-continuous casting
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the present study, vertical semi-continuous casting equipped with the electromagnetic stirring (EMS) was applied in order to control the solidification process and obtain the anticipated homogeneous microstructure for Cu-15Ni-8Sn alloy. The experimental results indicate that the microstructure of as-cast Cu-15Ni-8Sn (wt.%) alloy prepared by conventional casting consists of Sn-depleted α phase (α Cu(Ni) solid solution), Sn-rich γ phase ((CuxNi1-x)3Sn), and intermediate transition region (α+γ), and most of the Sn element mainly segregates at dendritic grain boundary. Discriminatively, some equiaxed grains come into being in as-cast Cu-15Ni-8Sn alloy prepared by vertical semi-continuous casting, and Sn-rich γ phases distribute on the matrix and grain boundary uniformly. Furthermore, the size of equiaxed grains becomes smaller after applying EMS, which reduces the segregation of Sn element to a large degree. In this study, microstructure evolution mechanism of Cu-15Ni-8Sn alloy prepared by conventional casting and by vertical semi-continuous casting without and with EMS is analyzed.
ISSN:1757-8981
1757-899X
1757-899X