In Situ Structural Characterization of Laser Welded NiTi Shape Memory Alloys

Abstract:

Article Preview

The demand of emerging joining techniques for shape memory alloys (SMA) has become of great importance, as their functional properties, namely shape memory effect (SME) and superelasticity (SE) present unique solutions for state-of-the-art applications. Literature shows that significant efforts have been conducted on laser welding of these alloys, although very limited results concerning mechanical properties are repeatedly achieved. A better understanding of the mechanical behaviour of these welded joints may be got through a detailed analysis of the structural characteristics of the material from the base metal to the weld bead. Such studies have been carried out on a series of Ni-rich Ni-Ti SMA laser welded plates using synchrotron radiation.

Info:

Periodical:

Materials Science Forum (Volumes 738-739)

Edited by:

Sergey Prokoshkin and Natalia Resnina

Pages:

338-343

Citation:

F. M. Braz Fernandes et al., "In Situ Structural Characterization of Laser Welded NiTi Shape Memory Alloys", Materials Science Forum, Vols. 738-739, pp. 338-343, 2013

Online since:

January 2013

Export:

Price:

$38.00

[1] W. Predki, A. Knopik, B. Bauer, Engineering applications of NiTi shape memory alloys, Materials Science and Engineering 481-482 (2008) 598-601.

DOI: https://doi.org/10.1016/j.msea.2006.12.195

[2] L. Janke, C. Czaderski, M. Motavalli, J. Ruth, Applications of shape memory alloys in civil engineering structures – Overview, limits and new ideias, Materials and Structures 38 (2005) 578-592.

DOI: https://doi.org/10.1007/bf02479550

[3] E. T. F. Chau, C. M. Friend, D. M. Allen, J. Hora, J. R. Webster, A technical and economic appraisal of shape memory alloys for aerospace applications, Materials Science and Engineering A 438-440 (2006) 589-592.

DOI: https://doi.org/10.1016/j.msea.2006.02.201

[4] P. Schlossmacher, T. Haas, A. Schussler, Laser-Welding of a Ni-Rich TiNi Shape Memory Alloy: Mechanical Behavior, Journal of Applied Physics IV, Colloque C5 (1997) 251-256.

DOI: https://doi.org/10.1051/jp4:1997539

[5] A. Tuissi, S. Besseghini, T. Ranucci, F. Squatrito, M. Pozzi, Effect of a Nd-YAG laser welding on the functional properties of the Ni-49. 6 at % Ti, Materials Science and Engineering A 273-275 (1999) 813-817.

DOI: https://doi.org/10.1016/s0921-5093(99)00422-0

[6] A. Falvo, F. M. Furgiuele, C. Maletta, Laser welding of a NiTi alloy: Mechanical and shape memory behaviour, Materials Science and Engineering A 412 (2005) 235-240.

DOI: https://doi.org/10.1016/j.msea.2005.08.209

[7] A. Falvo, F. M. Furgiuele, C. Maletta, Functional behavior of a NiTi-welded joint: Two-way shape memory effect, Materials Science and Engineering A 481-482 (2008) 647-650.

DOI: https://doi.org/10.1016/j.msea.2006.11.178

[8] X. J. Yan, D. Z. Yang, X. P. Liu, Influence of heat treatment on the fatigue life of a laser-welded NiTi alloy wire, Materials Characterization 58 (2007) 262–266.

DOI: https://doi.org/10.1016/j.matchar.2006.05.001

[9] M. I. Khan, S. K. Panda, Y. Zhou, Effects of Welding Parameters on the Mechanical Performance of Laser Welded Nitinol, Materials Transactions 49 (2008) 2702-2708.

DOI: https://doi.org/10.2320/matertrans.mra2008243

[10] H. Gugel, A. Schuermann, W. Theisen; Laser welding of NiTi wires, Materials Science and Engineering A 481–482 (2008) 668–671.

DOI: https://doi.org/10.1016/j.msea.2006.11.179

[11] Maletta, C.; Falvo, A. Furgiuele, F.; Barbieri, G. Brandizzi, M.; Fracture Behaviour of Nickel-Titanium Laser Welded Joints, J. of Materials Engineering and Performance 18 (2009) 569-574.

DOI: https://doi.org/10.1007/s11665-009-9351-8

[12] M. I. Khan, Y. Zhou, Effects of local phase conversion on the tensile loading of pulsed Nd: YAG laser processed Nitinol, Materials Science and Engineering A 527 (2010) 6235–6238.

DOI: https://doi.org/10.1016/j.msea.2010.06.025

[13] C. W. Chan, H. C. Man, T. M. Yue, Effects of Process Parameters upon the Shape Memory and Pseudo-Elastic Behaviors of Laser-Welded NiTi Thin Foil, Metallurgical and Materials Transactions A 42A (2011) 2264-2270.

DOI: https://doi.org/10.1007/s11661-011-0623-1

[14] L. A. Vieira, F .M. Braz Fernandes, R. M. Miranda, Mechanical behaviour of Nd: YAG laser welded superelastic NiTi, Materials Science and Engineering A 528 (2011) 5560-5565.

DOI: https://doi.org/10.1016/j.msea.2011.03.089

[15] B. Tam, M. I. Khan, Y. Zhou, Mechanical and Functional Properties of Laser-Welded Ti-55. 8 Wt Pct Ni Nitinol Wires, Metallurgical and Materials Transactions A 42 (2011) 2166- 2175.

DOI: https://doi.org/10.1007/s11661-011-0639-6

[16] F. M. Braz Fernandes, K. K. Mahesh, C. M. Craciunescu, J. P. Oliveira, N. Schell, R. M. Miranda, L. Quintino, J. L. Ocaña, Structural characterization by X-ray diffraction of laser welded shape memory alloys, in: J. F. Silva Gomes, Mário A. P. Vaz (Eds. ), Proceedings of ICEM15 - 15th International Conference on Experimental Mechanics, FEUP, Porto, 22-27 July 2012, 1149-1151.

DOI: https://doi.org/10.4028/www.scientific.net/msf.738-739.338