Deformation microstructure and tensile properties of Alloy 709 at different temperatures

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Deformation microstructure and tensile properties of Alloy 709 at different temperatures. / Ding, Rengen; Yan, Jin; Li, Hangyue; Yu, Suyang; Rabiei, Afsaneh; Bowen, Paul.

In: Materials and Design, Vol. 176, 15.08.2019, p. 107843.

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@article{19afb78ac1384111a83be34aee559d58,
title = "Deformation microstructure and tensile properties of Alloy 709 at different temperatures",
abstract = "Alloy 709 austenitic stainless steel is being investigated as a candidate structural material for the next generation fast neutron reactors at service temperature of 500–550 °C. However, the study of deformation mechanisms on Alloy 709 and of tensile response of aged Alloy 709 is lacking. In this study, thus, the tensile behaviour of as-received and aged Alloy 709, their deformation microstructures and failure mechanisms, have been investigated at room temperature (RT), 550, 650 and 750 °C. Aging brought about the formation of particles at grain boundaries and interior of grain, thus leading to enhancement of yield strength but reduction in ductility. The ultimate strength of both materials is strongly temperature dependent, which clearly decreases with temperature. It is caused by the decreasing strain hardening ability, dynamic strain aging and dynamic recovery together with dynamic recrystallisation at different temperatures.",
keywords = "Alloy 709, Tensile, Microstructure, TEM",
author = "Rengen Ding and Jin Yan and Hangyue Li and Suyang Yu and Afsaneh Rabiei and Paul Bowen",
year = "2019",
month = aug
day = "15",
doi = "10.1016/j.matdes.2019.107843",
language = "English",
volume = "176",
pages = "107843",
journal = "Materials and Design",
issn = "0264-1275",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Deformation microstructure and tensile properties of Alloy 709 at different temperatures

AU - Ding, Rengen

AU - Yan, Jin

AU - Li, Hangyue

AU - Yu, Suyang

AU - Rabiei, Afsaneh

AU - Bowen, Paul

PY - 2019/8/15

Y1 - 2019/8/15

N2 - Alloy 709 austenitic stainless steel is being investigated as a candidate structural material for the next generation fast neutron reactors at service temperature of 500–550 °C. However, the study of deformation mechanisms on Alloy 709 and of tensile response of aged Alloy 709 is lacking. In this study, thus, the tensile behaviour of as-received and aged Alloy 709, their deformation microstructures and failure mechanisms, have been investigated at room temperature (RT), 550, 650 and 750 °C. Aging brought about the formation of particles at grain boundaries and interior of grain, thus leading to enhancement of yield strength but reduction in ductility. The ultimate strength of both materials is strongly temperature dependent, which clearly decreases with temperature. It is caused by the decreasing strain hardening ability, dynamic strain aging and dynamic recovery together with dynamic recrystallisation at different temperatures.

AB - Alloy 709 austenitic stainless steel is being investigated as a candidate structural material for the next generation fast neutron reactors at service temperature of 500–550 °C. However, the study of deformation mechanisms on Alloy 709 and of tensile response of aged Alloy 709 is lacking. In this study, thus, the tensile behaviour of as-received and aged Alloy 709, their deformation microstructures and failure mechanisms, have been investigated at room temperature (RT), 550, 650 and 750 °C. Aging brought about the formation of particles at grain boundaries and interior of grain, thus leading to enhancement of yield strength but reduction in ductility. The ultimate strength of both materials is strongly temperature dependent, which clearly decreases with temperature. It is caused by the decreasing strain hardening ability, dynamic strain aging and dynamic recovery together with dynamic recrystallisation at different temperatures.

KW - Alloy 709

KW - Tensile

KW - Microstructure

KW - TEM

U2 - 10.1016/j.matdes.2019.107843

DO - 10.1016/j.matdes.2019.107843

M3 - Article

VL - 176

SP - 107843

JO - Materials and Design

JF - Materials and Design

SN - 0264-1275

ER -