Paper Titles

Deformation Twinning in Hexagonal Close-Packed Single Crystals under Uniaxial Compression
p.379

Numerical Simulation of Directionally Solidified Industrial Gas Turbine Hollow Blades by Liquid Metal Cooling
p.386

Erosion Behavior of Blooie Line in Gas Drilling
p.394

Effect of Residual Stresses on Ductile Crack Growth in Pipeline Steel
p.403

A Model for Prediction of Yield Stress of Heat Treated Al-7Si-Mg Cast Alloys
p.409

Estimation of Average Strain Rate during Equal-Channel Angular Pressing
p.419

QSAR Study on Imidazole Derivatives as Corrosion Inhibitors by Genetic Function Approximation Method
p.426

Thermodynamic Database of the Phase Diagrams in the Au-RE Binary Systems
p.433

Thermodynamic Database of the Phase Diagrams in the Sc-X Binary Systems
p.439

HomeMaterials Science ForumMaterials Science Forum Vol. 850A Model for Prediction of Yield Stress of Heat...

A Model for Prediction of Yield Stress of Heat Treated Al-7Si-Mg Cast Alloys

Article Preview

Abstract:

In the present investigation, a physically based numerical model was developed to predict the yield stress of Al-7Si-Mg cast alloy during processing. It covered the integrated unit step models of the physical metallurgy of solidification, solid-state of homogenization, and structural hardening of precipitation. The as-cast microstructure of Al-7Si-Mg alloy was calculated based on the cellular automaton method and the evolution of the precipitated phase during aging process was achieved by a precipitation kinetic model involved nucleation, growth and coarsening. The yield stress prediction was achieved by a strengthening model including the effects of as-cast microstructure, solution strengthening and precipitate hardening. The predictions of this model were verified by comparing with experimental measured yield stress which shows that this model is successfully applied to predict the yield stress evolution of Al-7Si-Mg cast alloy.

You might also be interested in these eBooks

Methods of Design and Characterization of Materials, Research and Development of Technological Processes

Info:

Periodical:

Materials Science Forum (Volume 850)

Pages:

409-418

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.409

Citation:

Cite this paper

Online since:

March 2016

Authors:

Qing Yan Xu*, Rui Chen, Yu Feng Shi, Bai Cheng Liu

Keywords:

Aging, Cast Aluminum Alloys, Microstructure, Modeling, Yield Strength

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2016 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Ch. -A. Gandin, Y. Brechet, M. Rappaz, G. Canova, M. Ashby, H. Shercliff, Modelling of solidification and heat treatment for the prediction of yield stress of cast alloys, Acta Mater. 50 (2002) 901-927.

DOI: 10.1016/s1359-6454(01)00376-7

[2] G. Liu, G.J. Zhang, X.D. Ding, J. Sun, K.H. Chen, Modeling the strengthening response to aging process of heat-treatable aluminum alloys containing plate/disc-or rod/needle-shaped, Mater. Sci. Eng. A. 344 (2003) 113-124.

DOI: 10.1016/s0921-5093(02)00398-2

[3] H.R. Shercliff, M.F. Ashby, A process model for age hardening of aluminum alloys-Ι. The model, Acta Mater. 38 (1990) 1789-1802.

DOI: 10.1016/0956-7151(90)90291-n

[4] H.R. Shercliff, M.F. Ashby, A process model for age hardening of aluminum alloys-ΙΙ. Applications of the model, Acta Mater. 38 (1990) 1803-1812.

DOI: 10.1016/0956-7151(90)90292-o

[5] O.R. Myth, Æ. Grong, S.J. Andersen, Modeling of the age hardening behavior of Al-Mg-Si alloys, Acta Mater. 49 (2001) 65-75.

[6] O.R. Myth, Æ. Grong, Modeling of non-isothermal transformations in alloys containing a particle distribution, Acta Mater. 48 (2000) 1605-1615.

DOI: 10.1016/s1359-6454(99)00435-8

[7] R. Wagner, R. Kampmann, Decomposition of alloys: the early stages. Oxford: Pergamon Press, (1984).

[8] J.S. Langer, A.J. Schwartz, Kinetics of nucleation in near-critical fluids, Phys. Rev. A. 21 (1980) 948-958.

DOI: 10.1103/physreva.21.948

[9] P.A. Rometsch, G.B. Schaffer, An age hardening model for Al-7Si-Mg casting alloys, Mater. Sci. Eng. A. 325 (2002) 424-434.

DOI: 10.1016/s0921-5093(01)01479-4

[10] J.Z. Guo, W.S. Cao, M. Samonds, The application of integrated computational material engineering (ICME) in metal castings simulation, Mater. Sci. Eng. 33 (2012).

DOI: 10.1088/1757-899x/33/1/012003

[11] S. Esmaeili, D.J. Loyd, W.J. Poole, A yield strength model for the Al-Mg-Si-Cu alloy AA6111, Acta Mater. 51 (2003) 2243-2257.

DOI: 10.1016/s1359-6454(03)00028-4

[12] O.R. Myth. Æ. Grong, K.O. Pedersen, A combine precipitation, yield strength, and work hardening model for Al-Mg-Si alloys, Metall. Mater. Trans. A 41 (2010) 2276-2289.

DOI: 10.1007/s11661-010-0258-7

[13] K. Radhakrishna, S. Seshan, M.R. Seshadri, Dendrite arm spacing in aluminum alloy castings, AFS Transactions. 80-87 (1980) 695-702.

[14] P. R. Goulart, J. E. Spinelli, W.R. Osório, A. Garcia, Mechanical properties as a function of microstructure and solidification thermal variables of Al-Si castings, Mater. Sci. Eng. A. 421 (2006) 245-253.

DOI: 10.1016/j.msea.2006.01.050

[15] B. Li, Q.Y. Xu, D. Pan, B.C. Liu, Y.C. Xiong, Y.J. Zhou, R. Z Hong, Microstructure simulation of ZL114A alloy during low pressure die casting process, Acta Metall. Sin. 44 (2008) 243-248.

[16] S.P. Yuan, G. Liu, R.H. Wang, G.J. Zhang, X. Pu, J. Sun, K. H Chen, Aging-depending coupling effects of multiple precipitates on the ductile fracture of heat-treatment aluminum alloys, Mater. Sci. Eng. A. 499 (2009) 387-395.

DOI: 10.1016/j.msea.2008.09.012

[17] Y. Birol, Response to artificial ageing of dendritic and globular Al-7Si-Mg alloys, J. Alloys Compd. 484 (2009) 164-167.

DOI: 10.1016/j.jallcom.2009.05.043

[18] G.A. Edwards, K. Stiller, G.L. Dunlop, M.J. Couper, The precipitation sequence in Al-Mg-Si alloys, Acta Mater. 46 (1998) 3893-3904.

DOI: 10.1016/s1359-6454(98)00059-7

[19] A. Deschamps, Y. Brechet, Influence of predeformation and aging of precipitation kinetics and yield stress, Acta Mater. 47 (1998) 293-305.

DOI: 10.1016/s1359-6454(98)00296-1

[20] J.G. Li, H.Y. Tan, Z.M. Shi, Q. He, Analysis of Mg2Si precipitates in Al-Si-Mg and Al-Mg-Si alloys by FE-SEM, The Chinese Journal of Nonferrous Metals. 18 (2008)1819-1823.

[21] G.J. Zhang, G. Liu, X.D. Ding, J. Sun, K. H Chen, Experimental and modeling study of aged aluminum alloys strengthening response, Acta Metall. Sin. 39 (2003) 803-808.

[22] M. Song, Modeling the hardness and yield strength evolutions of aluminum alloy with rod/needle-shaped precipitates, Mater. Sci. Eng. A. 443 (2007) 172-177.

DOI: 10.1016/j.msea.2006.08.025

[23] I.N. Khan, M.J. Starink, J.L. Yan, A model for precipitation kinetics and strengthening in Al-Cu-Mg alloys, Mater. Sci. Eng. A. 472 (2008) 66-74.

DOI: 10.1016/j.msea.2007.03.033

[24] A.W. Zhu, E.A. Starke Jr, Strengthening effect of unshearable particles of finite size: A computer experimental study, Acta Mater. 47 (1999) 3263-3269.

DOI: 10.1016/s1359-6454(99)00179-2

[25] J.D. Robson, Modeling the evolution of particle of particle size distribution during nucleation, growth and carsening, Mater. Sci. Tech. 20 (2004) 441-448.

[26] H. Kobayashi, M. Ode, S. G. Kim, W.T. Kim, T. Suzuki, Phase-field model for solidification of ternary alloys coupled with thermodynamic database, Scripta Mater. 48 (2003) 689-694.

DOI: 10.1016/s1359-6462(02)00557-2

[27] C. R. Hutchinson, J.F. Nie, S. Gorsse, Modeling the precipitation processes and strengthening mechanisms in a Mg-Al-(Zn) AZ91 alloy, Metall. Mater. Trans. A. 36 (2005) 2093-2105.

DOI: 10.1007/s11661-005-0330-x