SIMULATION OF FLUIDITY AND MISRUN PREDICTION FOR THE CASTING OF 356.0 ALUMINUM ALLOY INTO SAND MOLDS

被引：14
作者：
Bazhenov, V. E. [1 ]
Petrova, A., V [1 ]
Koltygin, A., V [1 ]
机构：
[1] Natl Univ Sci & Technol MISiS, Foundry Dept, Moscow, Russia
来源：
INTERNATIONAL JOURNAL OF METALCASTING | 2018年 / 12卷 / 03期
关键词：
fluidity simulation; 356.0 aluminum alloy; coherency point; IHTC; misrun; INTERFACIAL HEAT-TRANSFER; TRANSFER COEFFICIENT; FOUNDRY ALLOYS; NUMERICAL-SIMULATION; DENDRITIC COHERENCY; SOLIDIFICATION; AL; COMPOSITES; GRAVITY;
D O I：
10.1007/s40962-017-0188-x
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The basic parameters for the high-precision simulation of misrun formation in castings are the interface heat transfer coefficient (IHTC) between the casting and the mold and the critical solid fraction (f(S)(cr)) at which the alloy flow in the mold is choked off. The values for IHTC were obtained by comparing the simulated spiral lengths at different IHTC values with those obtained from experimental results. The IHTC values above the liquidus temperature (IHTCL = 1200 W m(-2) K-1) and below the solidus temperature (IHTCS = 600 W m(-2) K-1), as well as the critical solid fraction (f(S)(cr) = 0.1-0.15), were determined. The obtained values of IHTCL, IHTCS, and f(S)(cr) were used to simulate the casting process of 356.0 aluminum alloy into sand molds. Comparison of the misruns obtained in the cylindrical casting with misruns predicted by the simulation confirmed the accuracy of the IHTCL and IHTCS values obtained using the spiral test and allowed the value of the critical solid fraction (f (cr)(S) = 0.1) to be defined more accurately.
引用
收藏
页码：514 / 522
页数：9
相关论文
共 31 条
[1]   DETERMINATION OF DENDRITIC COHERENCY IN SOLIDIFYING MELTS BY THEOLOGICAL MEASUREMENTS [J].
ARNBERG, L ;
CHAI, G ;
BACKERUD, L .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 173 (1-2) :101-103
[2]   Fourier thermal analysis of the solidification kinetics in A356/SiCp cast composites [J].
Baez, JC ;
Gonzalez, C ;
Chavez, MR ;
Castro, M ;
Juarez, J .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 153 :531-536
[3]   Determination of interface heat transfer coefficient between aluminum casting and graphite mold [J].
Bazhenov, V. E. ;
Koltygin, A. V. ;
Tselovalnik, Yu. V. ;
Sannikov, A. V. .
RUSSIAN JOURNAL OF NON-FERROUS METALS, 2017, 58 (02) :114-123
[4]   Determination of the heat-transfer coefficient between the AK7ch (A356) alloy casting and no-bake mold [J].
Bazhenov, V. E. ;
Koltygin, A. V. ;
Tselovalnik, Yu. V. .
RUSSIAN JOURNAL OF NON-FERROUS METALS, 2016, 57 (07) :686-694
[5]   Experimental investigation of the transient and steady state rheological behaviour of Al-Si alloys in the mushy state [J].
Brabazon, D ;
Browne, DJ ;
Carr, AJ .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :69-80
[6]   Effect of the presence of SiCp on dendritic coherency of Al-Si-based alloys during solidification [J].
Cabrera, O. ;
Ramirez, M. ;
Campillo, B. ;
Gonzalez-Rivera, C. .
MATERIALS AND MANUFACTURING PROCESSES, 2008, 23 (01) :46-50
[7]   Study on the interfacial heat transfer coefficient between AZ91D magnesium alloy and silica sand [J].
Chen, Liping ;
Wang, Yingxin ;
Peng, Liming ;
Fu, Penghuai ;
Jiang, Haiyan .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2014, 54 :196-203
[8]   Effect of grain refinement on the fluidity of two commercial Al-Si foundry alloys [J].
Dahle, AK ;
Tondel, PA ;
Paradies, CJ ;
Arnberg, L .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (08) :2305-2313
[9]   Development of strength in solidifying aluminium alloys [J].
Dahle, AK ;
Arnberg, L .
ACTA MATERIALIA, 1997, 45 (02) :547-559
[10]  
Dantzig JA., 2009, SOLIDIFICATION, P644, DOI [10.1201/9781439808030, DOI 10.1201/9781439808030]
1234