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Interplay between temperature and composition effects on the martensitic transformation in Ni2+xMn1-xGa alloys
Li, Chun-Mei1,2; Hu, Qing-Miao1; Yang, Rui1; Johansson, Borje2,3,4,5; Vitos, Levente2,3,6
Corresponding AuthorHu, Qing-Miao(qmhu@imr.ac.cn)
2011-06-27
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume98Issue:26Pages:3
AbstractMartensitic transformation in Ni2+xMn1-xGa alloys is known to be controlled by the soft tetragonal elastic constant C' of the high-temperature austenitic phase. The temperature (T) and composition (x) dependence of C'(T, x) are calculated using the first-principles exact muffin-tin orbitals method. We show that the temperature factor of C' is dominated by the phonon-smearing term. The competition between the negative alloying effect (partial derivative C'/partial derivative x < 0) and the positive temperature effect (partial derivative C'/partial derivative T > 0) is found to lead to nearly constant C'(T-M(x), x) at the critical temperature TM(x). We demonstrate that a proper account of the temperature and composition dependence of C'(T, x) is indispensable for reasonable theoretical TM(x) values. VC 2011 American Institute of Physics. [doi: 10.1063/1.3603935]
Funding OrganizationSwedish Research Council ; Swedish Steel Producers' Association ; Carl Tryggers Foundation ; Goran Gustafsson Foundation ; Hungarian Scientific Research Fund ; MoST of China ; NSFC
DOI10.1063/1.3603935
Indexed BySCI
Language英语
Funding ProjectSwedish Research Council ; Swedish Steel Producers' Association ; Carl Tryggers Foundation ; Goran Gustafsson Foundation ; Hungarian Scientific Research Fund[OTKA 84078] ; MoST of China[2011CB606404] ; NSFC[50871114]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000292335700013
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106428
Collection中国科学院金属研究所
Corresponding AuthorHu, Qing-Miao
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden
3.Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, SE-75120 Uppsala, Sweden
4.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
5.Dalian Univ Technol, Coll Adv Sci & Technol, Dalian 116024, Peoples R China
6.Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
Recommended Citation
GB/T 7714
Li, Chun-Mei,Hu, Qing-Miao,Yang, Rui,et al. Interplay between temperature and composition effects on the martensitic transformation in Ni2+xMn1-xGa alloys[J]. APPLIED PHYSICS LETTERS,2011,98(26):3.
APA Li, Chun-Mei,Hu, Qing-Miao,Yang, Rui,Johansson, Borje,&Vitos, Levente.(2011).Interplay between temperature and composition effects on the martensitic transformation in Ni2+xMn1-xGa alloys.APPLIED PHYSICS LETTERS,98(26),3.
MLA Li, Chun-Mei,et al."Interplay between temperature and composition effects on the martensitic transformation in Ni2+xMn1-xGa alloys".APPLIED PHYSICS LETTERS 98.26(2011):3.
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