IMR OpenIR
Effect of Platform Dimension on the Dendrite Growth and Stray Grain Formation in a Ni-Base Single-Crystal Superalloy
X. B. Meng; J. G. Li; Z. Q. Chen; Y. H. Wang; S. Z. Zhu; X. F. Bai; F. Wang; J. Zhang; T. Jin; X. F. Sun; Z. Q. Hu
2013
Source PublicationMetallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN1073-5623
Volume44AIssue:4Pages:1955-1965
AbstractA model of typical turbine blade shape with different platforms was designed to study the nucleation and growth of stray grains in the platforms by both experimental investigation and a ProCAST simulation based on a cellular automaton finite-element model. The results show that at the withdrawal rate of 5 mm/min, no stray grains nucleate in the small dimensional platform. However, the primary grain grows into the inner and outer sections of this platform in different manners due to different thermal conditions in these sections. Furthermore, with the increase of platform dimension, stray grains with random orientations gradually nucleate in the corners of the platforms. It is found that these stray grains tend to nucleate either in the inner corners or at a faster withdrawal rate, which is associated with the corresponding thermal condition. Based on these results, the rule of the critical platform dimension and withdrawal rate without stray grain formation has been proposed. Besides, the simulation results are in accordance with experimental findings.
description.department[meng, x. b. ; li, j. g. ; jin, t. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [chen, z. q. ; wang, y. h. ; zhu, s. z. ; bai, x. f.] aviat ind corp china avic shenyang liming aeroeng, shenyang 110043, peoples r china. [wang, f.] aviat ind corp china avic guiyang liyang aeroengi, guiyang 550002, peoples r china. [zhang, j.] northwestern polytech univ, state key lab solidificat proc, xian 710072, peoples r china. ; meng, xb (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; xbmeng@imr.ac.cn
KeywordLow-angle Boundaries Directional Solidification Freckle Formation Spiral Selector Turbine-blades Simulation Castings Prediction Mechanism
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71408
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. B. Meng,J. G. Li,Z. Q. Chen,et al. Effect of Platform Dimension on the Dendrite Growth and Stray Grain Formation in a Ni-Base Single-Crystal Superalloy[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2013,44A(4):1955-1965.
APA X. B. Meng.,J. G. Li.,Z. Q. Chen.,Y. H. Wang.,S. Z. Zhu.,...&Z. Q. Hu.(2013).Effect of Platform Dimension on the Dendrite Growth and Stray Grain Formation in a Ni-Base Single-Crystal Superalloy.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,44A(4),1955-1965.
MLA X. B. Meng,et al."Effect of Platform Dimension on the Dendrite Growth and Stray Grain Formation in a Ni-Base Single-Crystal Superalloy".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 44A.4(2013):1955-1965.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[X. B. Meng]'s Articles
[J. G. Li]'s Articles
[Z. Q. Chen]'s Articles
Baidu academic
Similar articles in Baidu academic
[X. B. Meng]'s Articles
[J. G. Li]'s Articles
[Z. Q. Chen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[X. B. Meng]'s Articles
[J. G. Li]'s Articles
[Z. Q. Chen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.