|
|
|
| Relationship between secondary dendrite arm spacing and local solidification time of 30Cr2Ni4MoV alloy at slow cooling rates |
| Jing Zhao1 Hong-gang Zhong2 Ke Han3 ? Ren-xing Li2 Zhi-shuai Xu2 Qi-jie Zhai2 |
| 1 Department of Mechanical and Electrical Engineering, Tangshan University, Tangshan 063000, Hebei, China 2 State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200444, China 3 National High Magnetic Field Laboratory, Florida State University, Tallahassee 32310, USA |
|
|
|
|
Abstract Solidification process of 231 t 30Cr2Ni4MoV ingot manufactured by slow cooling process was studied using experimental and numerical simulations, which tackled the problems of high cost and long period in large ingot studying. Based on the numerical results of large ingot, five characteristic locations under different temperature gradients and cooling rates chosen from the large ingot were simulated. The experiments were performed under the same temperature conditions as in numerical simulations with specialized instrument. The influences of temperature gradient in the solid–liquid interface and solidification rate on the size and morphology of solidification structure were analyzed at cooling rate ranging from 10-3 to 10-2 C s-1. Solidification macrostructure and microstructure showed that no columnar dendrite was found in any specimen. The grain size and secondary dendrite arm spacing decreased at larger cooling rate, and the relationship between secondary dendrite arm spacing and local solidification time or cooling rate was determined.
|
|
Received: 18 September 2017
Published: 31 October 2018
|
|
|
|
| Cite this article: |
|
DIAO Jing,ZHONG Hong-Gang,LI Ren-Xin, et al. Relationship between secondary dendrite arm spacing and local solidification time of 30Cr2Ni4MoV alloy at slow cooling rates[J]. Journal of Iron and Steel Research International, 2018, 25(8): 821-829.
|
|
|
|
| [1] |
Bruce Chalmers.Principles of Solidification[J].John Wiley ＆ Sons, 1964, :-
|
| [2] |
John Campbell.Casting[J].Butterworth-Heinemann, 2003, :-
|
| [3] |
PNAnyalebechi.Effects of alloying elements and solidification conditions on secondary dendrite arm spacing in aluminum alloys[J].International Journal of Mathematical Education in Science ＆ Technology, 2004, 5(2):219-227
|
| [4] |
Z CHEN, Q J ZHAI, J Y ZHANG, H G ZHONG.Effects of Thermal Gradients and Rotational Flows on Grain Growth in 22t Steel Ingots[J].JOURNA L OF IRON AND STEEL RESEARCH, INTERNATIONAL, 2016, 23(9):973-980
|
| [5] |
I Narasimha, Murthy, J Babu.Evaluation of the microstructure,secondary dendrite arm spacing,and mechanical properties of Al–Si alloy castings made in sand and Fe–Cr slag molds[J].International Journal of Minerals, Metallurgy and Materials, 2017, 24(7):784-793
|
| [6] |
E ?ad?rl?, M ?ahin.Investigation of mechanical,electrical,and thermal properties of a Zn–126 wt% Al alloy[J].Journal of Materials Science, 2011, 46(5):1414-1423
|
| [7] |
T Savaskan, MS Turhal, S Murphy.Effect of cooling rate on structure and mechanical properties of monotectoid zinc aluminium alloys[J].Materials Science & Technology, 2003, 19(1):67-74
|
| [8] |
K Liu, X Cao, X D Chen.Effect of Mn,Si,and Cooling Rate on the Formation of Iron-Rich Intermetallics in 206 Al-Cu Cast Alloys[J].Metallurgical & Materials Transactions B, 2012, 43(5):1231-1240
|
| [9] |
S Q Yan, H X Wang.The effect of small of amount of Titanium addition on the grain refinement and mechanical properties of ZA48 alloy[J].Journal of Materials Engineering and Performance, 2013, 22(4):1113-1119
|
| [10] |
S W Choi, Y M Kim, K M Lee, H S Cho, S K Hong.The effects of cooling rate and heat treatment on mechanical and thermal characteristics of Al–Si–Cu–Mg foundry alloys[J].Journal of Alloys ＆ Compounds, 2014, 617(7):654-659
|
| [11] |
C X Li, T M Guo, R D Li.Research on Secondary Dendrite Arm Spacing[J].Foundry, 2004, 53(12):1011-1014
|
| [12] |
D R Sun, H Zhang, Z X Men, Q Li.Simulation research on the effect of cooling rate on secondary dendrite arm spacing in casting[J].Heavy casting and forging, 2014, 35(4):1-4
|
| [13] |
M S TURHAL, T SAVASKAN.Relationship between secondary dendrite arm spacing and mechanical properties of Zn-40Al-Cu alloys[J].Journal of Materials Science, 2003, 38(12):2369-2646
|
| [14] |
G Ramesh, K N Prabhu.Thermal analysis and microstructure of ZA8 alloy solidifying against chills[J].Transaction of the Indian Institute of Metals, 2012, 65(6):719-723
|
| [15] |
H Yamagata, W Kasprzak, M Aniolek, H Kurita.The effect of average cooling rates on the microstructure of the Al-20%Si high pressure die casting alloy used for monolithic cylinder blocks[J].Journal of Materials Processing and Technology, 2008, 203(1-3):333-341
|
| [16] |
LA Dobrzański, R Maniara, J Soko?owski, W Kasprzak.Effect of cooling rate on the solidification behavior of AC AlSi7Cu2 alloy[J].Journal of Materials Processing Technology, 2007, 191(1):317-320
|
| [17] |
W S Li, H F Shen, X Zhang.Modeling of Species Transport and Macrosegregation in Heavy Steel Ingots[J].Metallurgical and Materials Transactions B, 2014, 45(2):464-471
|
| [18] |
J Q Wang, P X Fu, H W Liu, D Z Li, Y Y Li.Shrinkage porosity criteria and optimized design of a 100-ton 30Cr2Ni4MoV forging ingot[J].Materials & Design, 2012, 35(9):446-456
|
| [19] |
W Kurz, D J Fisher.Fundamentals of Solidification[J].Trans Tech Publications Ltd, 1989, :-
|
| [20] |
T Z Kattamis, M C Flemings.Dendrites[J].Transaction of Metallurgical Society of AIME, 1965, 233(1):992-998
|
| [1] |
Shang-lin Lv . Zhong-min Yang . Bin Zhang, . Jie Chen . Ying Chen . Xiao-bin Li. Corrosion passive behaviour duplexstainlesssteelat different rates simulated marine-environmentsolution[J]. , 2018, 25(9): 943-953. |
| [2] |
Guo-chao Li ? Xu Cheng ? Xiang-jun Tian. Effects of annealing temperature and cooling rate on microstructures of a novel titanium alloy Ti–6Al–2V–1.5Mo–0.5Zr–0.3Si manufactured by laser additive manufacturing[J]. , 2018, 25(4): 442-452. |
| [3] |
Xiao-fei Zheng, . Yong-lin Kang . Bao-yong Wang . Zhi-gang Han . Xin-long Luo. Flexible manufacturing technology of controlling exact bake hardening value in continuous galvanizing line[J]. , 2018, 25(12): 1296-1302. |
| [4] |
Zhu-jun Jiang,Yu-ye Wu,,Jing-min Wang,Cheng-bao Jiang. Influence of cooling rate on magneto-structural transition and magnetocaloric effect of Ni30Cu8Co12Mn37Ga13 alloy[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 711-717. |
| [5] |
Xue-feng ZHOU,Wang-long ZHU,Hong-bing JIANG,Feng FANG,Yi-you TU,Jian-qing JIANG. A New Approach for Refining Carbide Dimensions in M42 Super Hard High-speed Steel[J]. Chinese Journal of Iron and Steel, 2016, 23(8): 800-807. |
| [6] |
Lian-yun JIANG,Chun-jiang ZHAO,Jian-hui SHI,Guo YUAN,Xue-qiang WANG,Qing-xue HUANG. Hot Rolled Strip Re-reddening Temperature Changing Law during Ultra-fast Cooling[J]. Chinese Journal of Iron and Steel, 2015, 22(8): 694-702. |
|
|
|
|
2018, Vol. 25 
