MICROSTRUCTURE OF NiTi ORTHODONTIC WIRES OBSERVATIONS USING TRANSMISSION ELECTRON MICROSCOPY

被引：0

作者：

Fercec, J. ^{[1
]}

Jenko, D. ^{[2
]}

Buchmeister, B. ^{[1
]}

Rojko, F. ^{[3
]}

Budic, B. ^{[4
]}

Kosec, B. ^{[5
]}

Rudolf, R. ^{[1
,6
]}

机构：

[1] Univ Maribor, Fac Mech Engn, SLO-2000 Maribor, Slovenia

[2] Inst Met & Technol, Ljubljana, Slovenia

[3] Univ Ljubljana, Fac Hlth Sci, Ljubljana, Slovenia

[4] Natl Chem Inst, Ljubljana, Slovenia

[5] Univ Ljubljana, Fac Nat Sci & Engn, Ljubljana, Slovenia

[6] Zlatarna Celje Dd, Celje, Slovenia

来源：

METALURGIJA | 2014年 / 53卷 / 04期

关键词：

NiTi orthodontic wire; microstructure; TEM; EDS; average grain size; MEMORY; TRANSFORMATION;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This work presents the results of the microstructure observation of six different types of NiTi orthodontic wires by using Transmission Electron Microscopy (TEM). Within these analyses the chemical compositions of each wire were observed in different places by applying the EDS detector. Namely, the chemical composition in the orthodontic wires is very important because it shows, the dependence between the phase temperatures and mechanical properties. Microstructure observations showed that orthodontic wires consist of nano-sized grains containing precipitates of Ti2Ni and/or TiC. The first precipitated Ti2Ni are rich in Ti, while the precipitated TiC is rich in C. Further investigation Showed that there was a difference in average grain size in the NiTi matrix. The sizes of grains in orthodontic wires are in the range from approximately 50 to 160 nm and the sizes of precipitate are in the range from 0,3 mu m to 5 mu m.

引用

页码：469 / 472

页数：4

共 20 条

[11] Influence of carbon on martensitic phase transformations in NiTi shape memory alloys
Frenzel, J.
Zhang, Z.
Somsen, Ch.
Neuking, K.
Eggeler, G.
[J]. ACTA MATERIALIA, 2007, 55 (04) : 1331 - 1341
[12] High quality vacuum induction melting of small quantities of NiTi shape memory alloys in graphite crucibles
Frenzel, J
Zhang, Z
Neuking, K
Eggeler, G
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 385 (1-2) : 214 - 223
[13] THE INFLUENCE OF Si AND V ON THE KINETICS OF PHASE TRANSFORMATION AND MICROSTRUCTURE OF RAPIDLY SOLIDIFIED Al-Fe-Zr ALLOYS
Karpe, B.
Kosec, B.
Nagode, A.
Bizjak, M.
[J]. JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY, 2013, 49 (01) : 83 - 89
[14] Lagoudas D., 2010, SHAPE MEMORY ALLOYS
[15] Martensitic Transformation of Cold-Rolled and Annealed Ti50Ni40Cu10 Shape Memory Alloy
Lin, Kai-Nan
Wu, Shyi-Kaan
Wu, Ling-Mei
[J]. MATERIALS TRANSACTIONS, 2009, 50 (11) : 2637 - 2642
[16] TEM-EDS characterization of second phases in ferritic steels
Matera, S
Anelli, E
[J]. MICROSCOPY MICROANALYSIS MICROSTRUCTURES, 1995, 6 (5-6): : 633 - 646
[17] Mortagy O., 2007, INT C MOD OPT STRUCT
[18] Nacucchi M., 2010, MATER SCI ENG, V7, p1
[19] Rudolf Rebeka T., 2013, MILITARY TECHNOL C, V61, P105
[20] Bainite orientation in plastically deformed austenite
Shirzadi, A. A.
Abreu, H.
Pocock, L.
Klobcar, D.
Withers, P. J.
Bhadeshia, H. K. D. H.
[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2009, 100 (01) : 40 - 45

← 1 2 →