Grain refining performance of Al-B master alloys with different microstructures on Al-7Si alloy

被引：21

作者：

Wang, Tongmin ^{[1
]}

Chen, Zongning ^{[1
]}

Fu, Hongwang ^{[1
]}

Li, Tingju ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

来源：

METALS AND MATERIALS INTERNATIONAL | 2013年 / 19卷 / 02期

基金：

中国国家自然科学基金;

关键词：

alloys; cast; microstructure; solidification; scanning electron microscopy; TI-C; REFINEMENT; ALUMINUM; MECHANISM; NUCLEANT;

D O I：

10.1007/s12540-013-2012-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The improved halide salt route has been employed to produce Al-3B master alloys with different microstructures. The micro-structural features of AlB2 particles exhibited different impacts on the grain refining response of Al-7Si alloy, evolving with the holding time after inoculation. Large blocky AlB2 particles suffer from an intense fading effect while strip-like particles are not effective enough at the 0.005 wt% B addition level. Among the various Al-3B master alloys, sample 1 containing fine, blocky AlB2 particles was revealed to be the most efficient in refining Al-7Si alloy. With inoculation of only 0.005%B of such alloy, the final grain size of Al-7Si alloy can reach 238 mu m. Its grain refining efficiency was more or less retained for holding times up to 60 min.

引用

页码：367 / 370

页数：4

共 21 条

[1]

ARNBERG L, 1982, MET TECHNOL, V9, P1

[2] Influence of reaction temperature for the manufacturing of Al-3Ti and Al-3B master alloys [J].

Auradi, V. ;

Kori, S. A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 453 (1-2) :147-156

[3]

Birol Y., MAT SCI TEC IN PRESS

[4] The effect of holding conditions in the conventional halide salt process on the performance of Al-Ti-B grain refiner alloys [J].

Birol, Yucel .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) :142-147

[5] Effect of the salt addition practice on the grain refining efficiency of Al-Ti-B master alloys [J].

Birol, Yucel .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 420 (1-2) :207-212

[6] Grain refinement of aluminum alloys: Part I. The nucleant and salute paradigms - A review of the literature [J].

Easton, M ;

StJohn, D .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (06) :1613-1623

[7] A thermomechanical process for grain refinement in precipitation hardening AA6xxx aluminum alloys [J].

Esmaeili, S. ;

Lloyd, D. J. ;

Jin, H. .

MATERIALS LETTERS, 2011, 65 (06) :1028-1030

[8] In-situ observation of the nucleation kinetics and the mechanism of grain refinement in Al-Si alloys (Part I) [J].

Faraji, M. ;

Wright, J. P. ;

Katgerman, L. .

MATERIALS LETTERS, 2010, 64 (09) :1016-1018

[9] Grain refinement response of LM25 alloy towards Al-Ti-C and Al-Ti-B grain refiners [J].

Kumar, G. S. Vinod ;

Murty, B. S. ;

Chakraborty, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 472 (1-2) :112-120

[10] Grain refining performance of Al-Ti master alloys with different microstructures [J].

Li, PJ ;

Kandalova, EG ;

Nikitin, V .

MATERIALS LETTERS, 2005, 59 (06) :723-727

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