Silicon morphology modelling during solidification process of A356 Al alloy

被引：21

作者：

Shabani, M. O. ^{[1
]}

Mazahery, A. ^{[1
]}

Davami, P. ^{[2
]}

Razavi, M. ^{[1
]}

机构：

[1] MERC, Tehran, Iran

[2] Sharif Univ Technol, Dept Mat Engn, Tehran, Iran

来源：

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2012年 / 25卷 / 01期

关键词：

FEM; Morphology; Silicon; MECHANICAL-PROPERTIES; EQUIAXED TRANSITION; AL-7SI ALLOY; MICROSTRUCTURE; VARIABLES; COLUMNAR;

D O I：

10.1179/1743133611Y.0000000018

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this paper, an introduction of the finite element approach to microstructure based modelling is provided, and the primary and secondary dendrite arm spacings of A356 alloy in the solidification process are simulated. The simulated results of dendrite morphology and the experimental measurements are presented and compared with the investigations of other researchers, which confirmed the accuracy of this model in its ability to predict the dendrite arm spacing. Each of the length scales, including silicon rod diameter and spacing, is discussed in detail. Analytical equations are generated for the length scales and incorporated in the Sharif University Technology academic software for the prediction of the microstructure in shape castings.

引用

页码：53 / 58

页数：6

共 15 条

[1]

[Anonymous], 1998, FUNDAMENTALS SOLIDIF

[2]

Chawla N., 2003, MATER CHARACT, V49, P395

[3] Study on the eutectic modification level of Al-7Si Alloy by computer aided recognition of thermal analysis cooling curves [J].

Chen, X ;

Geng, HY ;

Li, YX .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2) :283-289

[4] Analysis of variability in tensile ductility of a semi-solid metal cast A356 Al-alloy [J].

Gokhale, AM ;

Patel, GR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 392 (1-2) :184-190

[5] Mechanical properties as a function of microstructure and solidification thermal variables of Al-Si castings [J].

Goulart, PR ;

Spinelli, JE ;

Osório, WR ;

Garcia, A .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 421 (1-2) :245-253

[6]

Han Q, 2000, LIGHT METALS 2000, P609

[7] Columnar to equiaxed transition of eutectic in hypoeutectic aluminium-silicon alloys [J].

Heiberg, G ;

Nogita, K ;

Dahle, AK ;

Arnberg, L .

ACTA MATERIALIA, 2002, 50 (10) :2537-2546

[8] Effect of power ultrasound on solidification of aluminum A356 alloy [J].

Jian, X ;

Xu, H ;

Meek, TT ;

Han, Q .

MATERIALS LETTERS, 2005, 59 (2-3) :190-193

[9]

KASHYAP KT, 1993, MATER SCI TECH SER, V9, P189, DOI 10.1179/026708393790171944

[10] Development of an efficient grain refiner for Al-7Si alloy and its modification with strontium [J].

Kori, SA ;

Murty, BS ;

Chakraborty, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 283 (1-2) :94-104

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