Temperature and rate conditions for development of superplasticity in Zr?2.5% Nb alloy

Махутов, Н. А.; Fedorovich, L. P.; Chirkin, A.V.; Parfenov, B.G.; Tananov, A. I.

doi:10.1007/bf00773157

Cited by 5 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rosinger et al observed superplasticity in the CANDU pressure tube material in the temperature range of 600-800°C [15]. Several other researchers [18][19][20][21] have also reported superplasitcity in Zr-2.5Nb pressure tube material. Large elongation in the material undergoing superplastic deformation is associated with high strain rate sensitivity (SRS) when strain hardening is negligibly small.…”

Section: Literature Surveymentioning

confidence: 92%

Flow behaviour of autoclaved, 20% cold worked, Zr–2.5Nb alloy pressure tube material in the temperature range of room temperature to 800 °C

Dureja

Sinha

Srivastava

et al. 2011

Journal of Nuclear Materials

View full text Add to dashboard Cite

Section: Literature Surveymentioning

confidence: 92%

Flow behaviour of autoclaved, 20% cold worked, Zr–2.5Nb alloy pressure tube material in the temperature range of room temperature to 800 °C

Dureja

Sinha

Srivastava

et al. 2011

Journal of Nuclear Materials

View full text Add to dashboard Cite

“…During static annealing grain growth occurs by grain boundary migration, involving diffusional processes. The application of stress during deformation can enhance diffusional process 61 to result in more grain growth than it would be expected through static annealing alone (sections on 'Stress-strain rate behaviour' and 'Activation energy for grain growth'). In addition, during deformation, inadequate grain boundary migration or diffusional process might not be sufficient for accommodating grain boundary sliding.…”

Section: Interrelationship Between Types Of Microstructural Changesmentioning

confidence: 99%

Flow behaviour and microstructural evolution in cold worked 70∶30 α-brass

Toppo

Jyotsna

Kashyap

2011

Materials Science and Technology

View full text Add to dashboard Cite

Deformation behaviour and microstructures at failure were investigated in a mill cold worked 70∶30 α-brass over the test temperature range of 298–973 K and strain rate range of 10−5–5×10−3 s−1. Tensile properties as a function of temperature revealed three distinct regions, with their temperature sensitivity being maximum at intermediate temperatures (553–673 K) and much less towards the lower and higher temperature ranges. Two values of activation energy for high temperature deformation Q were obtained to be 117·5 kJ mol−1 below 623 K and 196·4 kJ mol−1 above this critical temperature. In the respective temperature range the values of stress exponent n were 5·6 and 3·8. Based on the values of Q and n, the deformation mechanism was suggested to be dislocation climb creep with a probable contribution from dislocation pipe diffusion on lowering the temperature. Both grain size and cavity size were found to increase with increasing test temperature, suggesting them to be interrelated and act as an alternative steps for accommodating grain boundary sliding. Static grain growth study, over the temperature range of 773 to 1073 K, led to activation energy for grain growth to be 71 kJ mol−1, with the time exponent of 0·37.

show abstract

Tackling Flow Stress of Zirconium Alloys

Das

2020

Arch Computat Methods Eng

View full text Add to dashboard Cite

Temperature and rate conditions for development of superplasticity in Zr?2.5% Nb alloy

Cited by 5 publications

References 1 publication

Flow behaviour of autoclaved, 20% cold worked, Zr–2.5Nb alloy pressure tube material in the temperature range of room temperature to 800 °C

Flow behaviour of autoclaved, 20% cold worked, Zr–2.5Nb alloy pressure tube material in the temperature range of room temperature to 800 °C

Flow behaviour and microstructural evolution in cold worked 70∶30 α-brass

Tackling Flow Stress of Zirconium Alloys

Contact Info

Product

Resources

About