Thermodynamic Analysis of Thermoelastic Martensitic Transformations

2004 ◽  
Vol 449-452 ◽  
pp. 1325-0 ◽  
Author(s):  
Yinong Liu
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Experimental Determination ◽  
Thermodynamic Parameters ◽  
Thermodynamic Analysis ◽  
Martensitic Transformations ◽  
Thermoelastic Martensitic Transformations ◽  
The Past ◽  
Concise Overview

This paper is concerned with the application of fundamental thermodynamic theories in the analysis of thermoelastic martensitic transformations in shape memory alloys, with a particular reference to polycrystalline NiTi. The discussion is delivered in two parts. The first part presents a concise overview of the fundamental theories of thermodynamics of thermoelastic martensitic transformations established in the past 30 years. The second part focuses on the principles governing the application of the theories, interpretation of the thermodynamic parameters defined in the theories, experimental determination of the parameters, and some common misperceptions and unjustified assumptions in practice concerning these parameters.

scholarly journals Effect of Hydrostatic Pressures on Thermoelastic Martensitic Transformations in Aged Ti–Ni and Ausaged Fe–Ni–Co–Ti Shape Memory Alloys

1992 ◽  
Vol 33 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Tomoyuki Kakeshita ◽  
Ken’ichi Shimizu ◽  
Sei Nakamichi ◽  
Ritsu Tanaka ◽  
Shoichi Endo ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Martensitic Transformations ◽  
Thermoelastic Martensitic Transformations

Thermal arrest analysis of thermoelastic martensitic transformations in shape memory alloys

2011 ◽  
Vol 26 (10) ◽  
pp. 1243-1252 ◽  
Author(s):  
Qinglin Meng ◽  
Hong Yang ◽  
Yinong Liu ◽  
Tae-hyun Nam ◽  
F. Chen
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Martensitic Transformations ◽  
Thermal Arrest ◽  
Thermoelastic Martensitic Transformations ◽  
Image Position

Abstract

On the effect of aging on martensitic transformations in Ni-rich NiTi shape memory alloys

2005 ◽  
Vol 14 (5) ◽  
pp. S186-S191 ◽  
Author(s):  
Gunther Eggeler ◽  
Jafar Khalil-Allafi ◽  
Susanne Gollerthan ◽  
Christoph Somsen ◽  
Wolfgang Schmahl ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Martensitic Transformations ◽  
Niti Shape Memory Alloys

scholarly journals Softening of Shear Elastic Coefficients in Shape Memory Alloys Near the Martensitic Transition: A Study by Laser-Based Resonant Ultrasound Spectroscopy

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1383
Author(s):  
Petr Sedlák ◽  
Michaela Janovská ◽  
Lucie Bodnárová ◽  
Oleg Heczko ◽  
Hanuš Seiner
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Single Crystals ◽  
Accurate Determination ◽  
Martensitic Transition ◽  
Elastic Coefficient ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound

We discuss the suitability of laser-based resonant ultrasound spectroscopy (RUS) for the characterization of soft shearing modes in single crystals of shape memory alloys that are close to the transition temperatures. We show, using a numerical simulation, that the RUS method enables the accurate determination of the c′ shear elastic coefficient, even for very strong anisotropy, and without being sensitive to misorientations of the used single crystal. Subsequently, we apply the RUS method to single crystals of three typical examples of shape memory alloys (Cu-Al-Ni, Ni-Mn-Ga, and NiTi), and discuss the advantages of using the laser-based contactless RUS arrangement for temperature-resolved measurements of elastic constants.

Sign in / Sign up

Export Citation Format

Share Document