| 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 Author | Hu, Qing-Miao(qmhu@imr.ac.cn) |
| 2011-06-27 | |
| Source Publication | APPLIED PHYSICS LETTERS
 |
| ISSN | 0003-6951 |
| Volume | 98Issue:26Pages:3 |
| Abstract | Martensitic 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 Organization | Swedish Research Council ; Swedish Steel Producers' Association ; Carl Tryggers Foundation ; Goran Gustafsson Foundation ; Hungarian Scientific Research Fund ; MoST of China ; NSFC |
| DOI | 10.1063/1.3603935 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Swedish 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 Area | Physics |
| WOS Subject | Physics, Applied |
| WOS ID | WOS:000292335700013 |
| Publisher | AMER INST PHYSICS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/106428 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Hu, Qing-Miao |
| Affiliation | 1.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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