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Al stabilized TiC twinning platelets
H. Zhang; X. H. Wang; Z. J. Li; Y. C. Zhou
2014
Source PublicationJournal of Materials Research
ISSN0884-2914
Volume29Issue:9Pages:1113-1121
AbstractTitanium carbide (TiC) twins are believed to be extremely unstable because of their high twin boundary energy. Here, we report that TiC twins are always presented in platelets with dimensions of 2-3 mu m in length and less than 300 nm in width. In-depth microstructural characterizations by high-resolution transmission electron microscopy demonstrate that Al atoms at the twin boundary play a decisive role in stabilizing TiC twins. With different amounts of Al, perfect and defective TiC twins are formed. For perfect twins, three types of twin boundaries can be formed depending on the amount of remaining Al at the twin boundary. With inadequate Al, the TiC twins become defective with certain degrees of deviation from the perfect twin orientation. Based on a detailed analysis of the microstructure of the twin boundaries, a mechanism for the formation and stabilization of TiC twins is proposed.
description.department[zhang, hui ; wang, xiaohui ; li, zhaojin] chinese acad sci, shenyang natl lab mat sci, inst met res, high performance ceram div, shenyang 110016, peoples r china. [zhang, hui ; li, zhaojin] univ chinese acad sci, beijing 100049, peoples r china. [zhou, yanchun] arimpt, sci & technol adv funct composite lab, beijing 100076, peoples r china. ; zhou, yc (reprint author), arimpt, sci & technol adv funct composite lab, beijing 100076, peoples r china. ; yczhou714@gmail.com
KeywordGrain-boundaries Copper-titanium Cu Microstructure Segregation Composites Ti3sic2 Metals Cu-ti3alc2 Strength
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72961
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
H. Zhang,X. H. Wang,Z. J. Li,et al. Al stabilized TiC twinning platelets[J]. Journal of Materials Research,2014,29(9):1113-1121.
APA H. Zhang,X. H. Wang,Z. J. Li,&Y. C. Zhou.(2014).Al stabilized TiC twinning platelets.Journal of Materials Research,29(9),1113-1121.
MLA H. Zhang,et al."Al stabilized TiC twinning platelets".Journal of Materials Research 29.9(2014):1113-1121.
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