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Material Characterization of Rapidly Solidified Ti-Ni-Cu Alloys

Published online by Cambridge University Press:  25 February 2011

Y. Furuya ,
M. Matsumoto  and
T. Masumoto
Y. Furuya
Affiliation:
Department of Materials Processing, Faculty of Engineering, Tohoku University, Sendai 980, Japan
M. Matsumoto
Affiliation:
Research Institute of Mineral Dressing and Metallurgy, Tohoku University, Sendai 980, Japan
T. Masumoto
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980, Japan
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Abstract

Material properties of of rapidly solidified(RS),Ti5øNi5ø-xCux(X=O-2Oat%) alloys,i.e., thermoelasatic transformation temperature,transformation strain vs. temperature hysteresis, strength.ductility,themal fatigue resistance and corrosion resistance etc. were investigated. Specimens of thin ribbon were prepared by using melt-spinning machine with single Cu rolls at the cooling rate of about 40 m/sec. In the range of Cu content over lOat%,rapidly solidified (RS)ribbons were producible as a very thin plate and showed high ductility(i.e.180° bending). From the measurements of transformation strain vs. temperature hysteresis under small stress a bout 60MPa,transformation strain shows the maximum at Cu=5at%,and its transformtion temperature range nΔ(=Af-Mf) decreased with increasing Cu content to minimum value of 6.5K at Cu=17 at%. Thermal fatigue resistance was improved very much about ten times,futhermore,corrosion resistance was also improved over 100 times as much as conventionally processed(i.e. melting→ mechanically worked) material. It can be concluded that the functional superioity of RS meltspun Ti5øNi5ø-xCux ribbon exists in the range of Cu content over 10 at%. The reason of abovementioned remarkable improvements of material properties of RS TiNiCu alloys is discussed by relating with the observed unique fine columnar microstructures having strong crystal anisotropy and homogeneouss smooth surface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 246: Symposium M – Shape-Memory Materials and Phenomena--Fundamental Aspects and Applications , 1991 , 355
Copyright
Copyright © Materials Research Society 1992

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References

1. Wayman, C.M.: J.Metals, June(1980)129.CrossRefGoogle Scholar
2.Engineering Aspects of Shape Memory Alloy, Int.Workshop, Michigan,U.S.A., (1988)269.Google Scholar
3. Furuya, Y., Shimada, H., Matsumoto, M. and Honma, T.:MRS Int'l.Mtg.on Adv.Mats.,9(1989)269.Google Scholar
4. Furuya, Y., Matsumoto, M., Kimura, H.S., Aoki, K. and Masumoto, T.: Mater.Trans. JIM, 31(1990)504.CrossRefGoogle Scholar
5. Eucken, S., Otto, G., Donner, P. and Justi, S.: Pro. 6th Conf.Titanium, France (1988)871.Google Scholar