A Method of Stray Grain Suppression for Single-Crystal Superalloy During Seed Melt-Back

被引：7
作者：
Xuan, Weidong [1 ,2 ,3 ]
Lan, Jian [1 ,2 ,3 ]
Liu, Huan [1 ,2 ,3 ]
Li, Chuanjun [1 ,2 ,3 ]
Zhong, Yunbo [1 ,2 ,3 ]
Ren, Xingfu [1 ,2 ,3 ]
Li, Xi [1 ,2 ,3 ]
Cao, Guanghui [1 ,2 ,3 ]
Ren, Zhongming [1 ,2 ,3 ]
机构：
[1] Shanghai Univ, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China
[2] Shanghai Univ, Shanghai Key Lab Adv Ferromet, Shanghai 200072, Peoples R China
[3] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 12期
关键词：
HEAT-TRANSFER COEFFICIENT; HIGH MAGNETIC-FIELD; DIRECTIONAL SOLIDIFICATION; FRECKLE FORMATION; BASE; GROWTH; ALLOY; SIMULATION; NUCLEATION; SELECTION;
D O I：
10.1007/s11661-016-3808-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The suppression of stray grains during seed melt-back of single-crystal superalloy through thermal resistance technique has been investigated based on both experimental observations and numerical simulation. The results indicate that the introduction of thermal resistance layer significantly suppresses the stray grain formation of single-crystal superalloy. Based on both theoretical analysis and numerical simulation, above results should be attributed to the decrease of radial heat transfer of sample in the thermal resistance layer.
引用
收藏
页码：5691 / 5697
页数：7
相关论文
共 42 条
[1]   Misorientation induced by withdrawal rate transition and its effect on intermediate temperature stress rupture properties of a Ni3Al based single crystal superalloy [J].
Ai, Cheng ;
Zhou, Jian ;
Zhang, Heng ;
Pei, Yanling ;
Li, Shusuo ;
Gong, Shengkai .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 637 :77-83
[2]   CELLULAR AND DENDRITIC GROWTH .1. [J].
BURDEN, MH ;
HUNT, JD .
JOURNAL OF CRYSTAL GROWTH, 1974, 22 (02) :99-108
[3]  
Caron P., 1988, SUPERALLOYS, P214
[4]   Process modelling of grain selection during the solidification of single crystal superalloy castings [J].
Carter, P ;
Cox, DC ;
Gandin, CA ;
Reed, RC .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (02) :233-246
[5]   Seeding of single-crystal superalloys - Role of constitutional undercooling and primary dendrite orientation on stray-grain nucleation and growth [J].
D'Souza, N ;
Jennings, PA ;
Yang, XL ;
Dong, HB ;
Lee, PD ;
McLean, M .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2005, 36 (05) :657-666
[6]   Grain Selection in Spiral Selectors During Investment Casting of Single-Crystal Components: Part II. Numerical Modeling [J].
Dai, H. J. ;
Dong, H. B. ;
D'Souza, N. ;
Gebelin, J-C ;
Reed, R. C. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2011, 42A (11) :3439-3446
[7]   Determination of interfacial heat-transfer coefficient during investment-casting process of single-crystal blades [J].
Dong, Yiwei ;
Bu, Kun ;
Dou, Yangqing ;
Zhang, Dinghua .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2011, 211 (12) :2123-2131
[8]   Thermal analysis of the Bridgman and liquid-metal-cooled directional solidification investment casting processes [J].
Elliott, A. J. ;
Pollock, T. M. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (04) :871-882
[9]   Directional solidification of large superalloy castings with radiation and liquid-metal cooling: A comparative assessment [J].
Elliott, AJ ;
Tin, S ;
King, WT ;
Huang, SC ;
Gigliotti, MFX ;
Pollock, TM .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2004, 35A (10) :3221-3231
[10]   Grain Selection During Casting Ni-Base, Single-Crystal Superalloys with Spiral Grain Selector [J].
Gao, S. F. ;
Liu, L. ;
Wang, N. ;
Zhao, X. B. ;
Zhang, J. ;
Fu, H. Z. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2012, 43A (10) :3767-3775
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