IMR OpenIR
Sudden transition from columnar to equiaxed grain of cast copper induced by rare earth microalloying
Chen, Yan; Zhang, Shihong; Song, Hongwu; Cheng, Ming; Li, Haihong; Liu, Jinsong; shzhang@imr.ac.cn
2016
Source PublicationMATERIALS & DESIGN
ISSN0261-3069
Volume91Pages:314-320
AbstractA sudden columnar-to-equiaxed transition (CET) of cast copper with rare earth (RE) microalloying has been examined. Some solidification parameters of Cu-La alloys were determined by using optical microscopy and differential scanning calorimetry, and simulation of temperature field in copper ingot solidification process. It is noted that the addition of RE microalloying can purify the alloy and make an interaction between equiaxed nucleation and constitutional undercooling, which results in a sudden CET. Furthermore, a new prediction model of the critical alloy composition condition for the CET induced by RE microalloying is established. The critical compositions of a sudden CET of cast copper with La addition is 0.14 wt.%, which is in good agreement with the experimental results. It is suggested that increasing the alloy content is very necessary at a high gradient in order to promote the CET. However, the number N-0 of effective nucleation sites should also be increased with the decrease of the alloy composition. Meanwhile, it can be found that the columnar region can be expanded with the increase of the temperature gradient. It is obvious that lowering temperature gradient contributes to promote the CET. The prediction model can also be used in the common CET very well. (C) 2015 Elsevier Ltd. All rights reserved.
description.department[chen, yan ; zhang, shihong ; song, hongwu ; cheng, ming ; li, haihong ; liu, jinsong] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordSudden Columnar-to-equiaxed Transition Rare Earth Microalloying Cast Copper Constitutional Undercooling
Funding OrganizationScience Foundation of The Chinese Academy of Sciences [2012005]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75148
Collection中国科学院金属研究所
Corresponding Authorshzhang@imr.ac.cn
Recommended Citation
GB/T 7714
Chen, Yan,Zhang, Shihong,Song, Hongwu,et al. Sudden transition from columnar to equiaxed grain of cast copper induced by rare earth microalloying[J]. MATERIALS & DESIGN,2016,91:314-320.
APA Chen, Yan.,Zhang, Shihong.,Song, Hongwu.,Cheng, Ming.,Li, Haihong.,...&shzhang@imr.ac.cn.(2016).Sudden transition from columnar to equiaxed grain of cast copper induced by rare earth microalloying.MATERIALS & DESIGN,91,314-320.
MLA Chen, Yan,et al."Sudden transition from columnar to equiaxed grain of cast copper induced by rare earth microalloying".MATERIALS & DESIGN 91(2016):314-320.
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
[Chen, Yan]'s Articles
[Zhang, Shihong]'s Articles
[Song, Hongwu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Yan]'s Articles
[Zhang, Shihong]'s Articles
[Song, Hongwu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Yan]'s Articles
[Zhang, Shihong]'s Articles
[Song, Hongwu]'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.