Propagation Ultrasound Velocity at Plastic Deformation of Fe–Cr–Ni Alloy within 180–318 K

2021 ◽  
Author(s):  
S. A. Barannikova ◽  
S. V. Kolosov ◽  
A. M. Nikonova
Keyword(s):  
Plastic Deformation ◽  
Ultrasound Velocity ◽  
Ni Alloy

Ultrasonic rate changes bytension of the Fe-Cr-Ni alloy at 180-318 K

2021 ◽  
pp. 47-53
Author(s):  
S.A. Barannikova ◽  
◽  
S.V. Kolosov ◽  
A.M. Nikonova ◽  
◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Piezoelectric Transducer ◽  
Rayleigh Waves ◽  
Mechanical Characteristics ◽  
Ultrasound Velocity ◽  
Deformation Curve ◽  
Digital Oscilloscope ◽  
Α Phase ◽  
Velocity Of Ultrasound ◽  
Ni Alloy

Investigations of the mechanical characteristics and changes in the propagation velocity of ultrasound (Rayleigh waves) during plastic deformation of the Fe-Ni-Cr alloy in the temperature range 180 ≤ T ≤ 318 K. The implementation of the method for measuring the velocity of Rayleigh waves consisted in the periodic generation of rectangular pulses with a duration of 100 ns at the input of the radiating piezoelectric transducer and registration of the wave passed through the sample by means of a receiving piezoelectric transducer connected to a digital oscilloscope. It was found that a decrease in the temperature of the alloy under study changes not only the type of the deformation curve under uniaxial tension, but also changes the character of the dependence of the ultrasound velocity on deformation and stresses associated with the growth of the martensitic α'-phase formed as a result of γ-α'- phase transformation.

Changes in ultrasound velocity in the plastic deformation of high-chromium steel

2016 ◽  
Vol 46 (8) ◽  
pp. 552-557 ◽  
Author(s):  
S. A. Barannikova ◽  
A. V. Bochkareva ◽  
A. G. Lunev ◽  
G. V. Shlyakhova ◽  
L. B. Zuev
Keyword(s):  
Plastic Deformation ◽  
Ultrasound Velocity ◽  
Chromium Steel ◽  
High Chromium

Microstructure and Properties of Ag-1.33%Mg-0.54%Ni Alloy after Severe Plastic Deformation and Internal Oxidation

2013 ◽  
Vol 42 (1) ◽  
pp. 32-36
Author(s):  
Kong Jianwen ◽  
Shi Qingnan ◽  
Wang Jianhua ◽  
Yi Jianhong ◽  
Xie Hongchao ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Internal Oxidation ◽  
Microstructure And Properties ◽  
Ni Alloy

Effect of Solution Annealing and Low Temperature Ageing on the Microstructures and Superelastic Behaviour of Ti-50.7at.%Ni Alloy

2013 ◽  
Vol 813 ◽  
pp. 72-80
Author(s):  
Esah Hamzah ◽  
Kurnia Hastuti ◽  
Jasmi Hashim ◽  
Chuan Eng Chuah ◽  
Muhammad Adil Khattak
Keyword(s):  
Heat Treatment ◽  
Plastic Deformation ◽  
Low Temperature ◽  
Testing Temperature ◽  
Sample Solution ◽  
Solution Annealing ◽  
Treatment Conditions ◽  
Ni Alloy ◽  
Temperature Ageing ◽  
Higher Temperature

In this study a plate form of Ti-50.7at.%Ni was subjected to solution annealing at 800°C and 900°C for one hour followed by ageing at 300°C and 400°C for 4 hours respectively in order to investigate the effect of solution annealing and low temperature ageing on the microstructures and superelastic behaviour. It was found that the formation of Ti3Ni4 precipitates on the samples aged at 300°C and 400°C influences superelasticity differently. Increasing the testing temperature up to 38°C generally increases the superelasticity of samples for all heat treatment conditions compared to those tested at 22°C, however the sample solution annealed at 900°C give better superelasticity at 22°C due to excessive plastic deformation at higher temperature.

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