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Kinetic Model of Thermoelastic Martensite Transformation in Niti and NiMn Based Shape Memory Alloys

Published online by Cambridge University Press:  21 February 2011

K. H. Wu ,
J.D. Shi ,
F. Yang  and
Z. J. Pu
K. H. Wu
Affiliation:
Department of Mechanical Engineering, Florida International University, Miami, FL 33199, U.S.A.
J.D. Shi
Affiliation:
Department of Mechanical Engineering, Florida International University, Miami, FL 33199, U.S.A.
F. Yang
Affiliation:
Department of Mechanical Engineering, Florida International University, Miami, FL 33199, U.S.A.
Z. J. Pu
Affiliation:
Department of Mechanical Engineering, Florida International University, Miami, FL 33199, U.S.A.
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Abstract

A new, quantitative model was developed to describe the martensite transformation kinetics of thermoelastic shape memory alloys (SMAs). In addition, a series of experiments were conducted to study the Kinetics of thermoelastic martensite transformation in four SMA systems: NiTi, NiTi-15at%Hf, NiTi-20at%Zr and NiMn-7.5at%Ti alloys. Comparisons between data of the kinetic of martensite transformation with the present theoretic models show that the proposed model is in good agreement and concurs with the experimental data. Also, a comparison of data from the proposed model with data from existing kinetic models, such as Liang's and Magee's [1,7], indicates that the proposed model can better describe the experimental data, including the relationship between dξ(T)/dT and ξ, and dξ(T)/dT and T.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 537
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

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