Refinement of primary Si in the bulk solidified Al-20 wt.%Si alloy assisting by high static magnetic field and phosphorus addition

被引：36

作者：

Chen, Xu ^{[1
,2
,3
]}

Zhong, Yunbo ^{[1
,2
,3
]}

Zheng, Tianxiang ^{[1
,2
,3
]}

Shen, Zhe ^{[1
,2
,3
]}

Wang, Jiang ^{[1
,2
,3
]}

Fan, Lijun ^{[1
,2
,3
]}

Zhai, Yong ^{[1
,2
,3
]}

Peng, Minghu ^{[1
,2
,3
]}

Zhou, Bangfei ^{[1
,2
,3
]}

Ren, Weili ^{[1
,2
,3
]}

Lei, Zuosheng ^{[1
,2
,3
]}

Ren, Zhongming ^{[1
,2
,3
]}

He, Qiong ^{[4
]}

机构：

[1] Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China

[2] Shanghai Univ, Shanghai Key Lab Adv Ferromet, Shanghai 200072, Peoples R China

[3] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

[4] Shanghai Univ, Microelect R&D Ctr, Shanghai 200072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 714卷

关键词：

High static magnetic field; Phosphorus addition; Hypereutectic Al-Si alloy; P MASTER ALLOY; PRIMARY SILICON PARTICLES; AL-SI; MECHANICAL-PROPERTIES; HETEROGENEOUS NUCLEATION; EUTECTIC SI; MICROSTRUCTURE; GROWTH; DIFFUSION; BEHAVIOR;

D O I：

10.1016/j.jallcom.2017.04.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Effects of high static magnetic field (HSMF) on microstructures and solidification process of Al-20 wt.%Si alloys with and without phosphorus addition (P addition) have been investigated. The size of primary Si (SPS) is refined continuously as the increase of magnetic flux density (B), and the minimum SPS value is about 15.4 mu m when B is 29 T without P addition. However, the SPS decreases firstly and then increases as the increasing B combined with P addition, the average SPS value reaches to the minimum about 21.1 mu m when B is 1 T. A unified refinement mechanism has been suggested based on the theory of thermodynamic nucleation and kinetic growth under the HSMF. And the influence of P addition on the morphology of primary Si has also been discussed. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：39 / 46

页数：8

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