Microstructure simulation of ZL114A alloy during low pressure die casting process

被引：0

作者：

Li Bin ^{[1
]}

Xu Qingyan ^{[1
]}

Pan Dong ^{[1
]}

Liu Baicheng ^{[1
]}

Xiong Yancai ^{[2
]}

Zhou Yongjiang ^{[2
]}

Hong Runzhou ^{[2
]}

机构：

[1] Tsinghua Univ, Minist Educ, Dept Mech Engn, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R China

[2] Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

ACTA METALLURGICA SINICA | 2008年 / 44卷 / 02期

关键词：

aluminum alloy; low pressure die casting; microstructure; numerical simulation; nucleation model;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Based on the statistical analysis of a number of experimental data, a nucleation model was developed and the related thermodynamics and kinetics parameters were presented for low pressure die casting of ZL114A aluminum alloy. A modified CA-FD method was proposed to simulate macro solidification process and microstructure evolution of the alloy. The preferential growth orientation, solute redistribution in both liquid and solid, solid/liquid interface curvature and growth anisotropy were all considered in the model. The grain size, secondary dendrite arm spacing and eutectic volume fraction of the alloy at different cooling rates were predicted and compared with experimental results of step-shaped sample casting.

引用

页码：243 / 248

页数：6

共 18 条

[1] Growth of solutal dendrites: A cellular automaton model and its quantitative capabilities
Beltran-Sanchez, L
Stefanescu, DM
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34 (02): : 367 - 382
[2] CHEN LL, 2002, SPEC CAST NONFERR AL, P173
[3] Cheng Wanli, 2003, FOUNDRY, V52, P609
[4] CHENG ZW, 2003, THESIS NW POLYTECHNI, P57
[5] [李梅娥 Li Meie], 2002, [机械科学与技术, Mechanical Science and Technology], V21, P824
[6] Li Q, 2004, ACTA METALL SIN, V40, P634
[7] Liang ZJ, 2004, ACTA METALL SIN, V40, P439
[8] Liu Y., 2006, TSINGHUA SCI TECHNOL, V11, P495
[9] Numerical modeling of solidification morphologies and segregation patterns in cast dendritic alloys
Nastac, L
[J]. ACTA MATERIALIA, 1999, 47 (17) : 4253 - 4262
[10] On dendritic solidification of multicomponent alloys with unequal liquid diffusion coefficients
Rappaz, M
Boettinger, WJ
[J]. ACTA MATERIALIA, 1999, 47 (11) : 3205 - 3219

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