Effect of Cold Work on Creep Rupture Strength of Alloy263

Naoya Kanno; Yoshiki Shioda; Keiji Kubushiro

doi:doi:10.11648/j.ijmsa.20170605.16

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Effect of Cold Work on Creep Rupture Strength of Alloy263

Naoya Kanno, Yoshiki Shioda, Keiji Kubushiro

Published in International Journal of Materials Science and Applications (Volume 6, Issue 5)

Received: 13 September 2017 Accepted: 22 September 2017 Published: 13 October 2017

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Abstract

Creep rupture strength and the microstructure change during creep deformation of pre-strained Alloy263 were investigated. Creep rupture tests were conducted at 1023, 1073 K at stress range from 120 to 250 MPa. Creep strength of the pre-strained samples was higher than that of the non-strained samples. However, rupture strain of the pre-strained samples was much lower than that of non-strained samples. In the pre-strained samples, Ni₃(Al, Ti)- γ’ and M₂₃C₆ inside of the grains precipitated finer than the non-strained samples compared at the same creep time. At grain boundaries, the grain boundary shielding ratio covered by M₂₃C₆ carbide showed almost same value among each samples. However, diameter of the M₂₃C₆ particle decreased in pre-strained samples. Furthermore, dynamic recrystallization was promoted and precipitation free zone (PFZ) was formed around Ni₃Ti-η phase at grain boundary. These observations show that increase in creep-strength of pre-strained sample was due to increase in precipitation strengthening in the grain by fine precipitation of γ’ and M₂₃C₆. In addition, resistance against crack propagation at grain boundary increased by the fine precipitation of grain boundary M₂₃C₆ even though formation of PFZ and promotion of the dynamic recrystallization. It is estimated that Orowan-stress of pre-strained samples was 1.7 times higher than non-strained samples. It is considered that these strengthening effects overcome the weakening effects in the pre-strained samples.

Published in	International Journal of Materials Science and Applications (Volume 6, Issue 5)
DOI	10.11648/j.ijmsa.20170605.16
Page(s)	260-268
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

A-USC, Alloy263, Cold-Work, Creep Strength, Microstructure, Precipitation Strengthening, Carbides, γ’

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APA Style

Naoya Kanno, Yoshiki Shioda, Keiji Kubushiro. (2017). Effect of Cold Work on Creep Rupture Strength of Alloy263. International Journal of Materials Science and Applications, 6(5), 260-268. https://doi.org/10.11648/j.ijmsa.20170605.16

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ACS Style

Naoya Kanno; Yoshiki Shioda; Keiji Kubushiro. Effect of Cold Work on Creep Rupture Strength of Alloy263. Int. J. Mater. Sci. Appl. 2017, 6(5), 260-268. doi: 10.11648/j.ijmsa.20170605.16

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AMA Style

Naoya Kanno, Yoshiki Shioda, Keiji Kubushiro. Effect of Cold Work on Creep Rupture Strength of Alloy263. Int J Mater Sci Appl. 2017;6(5):260-268. doi: 10.11648/j.ijmsa.20170605.16

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@article{10.11648/j.ijmsa.20170605.16,
  author = {Naoya Kanno and Yoshiki Shioda and Keiji Kubushiro},
  title = {Effect of Cold Work on Creep Rupture Strength of Alloy263},
  journal = {International Journal of Materials Science and Applications},
  volume = {6},
  number = {5},
  pages = {260-268},
  doi = {10.11648/j.ijmsa.20170605.16},
  url = {https://doi.org/10.11648/j.ijmsa.20170605.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20170605.16},
  abstract = {Creep rupture strength and the microstructure change during creep deformation of pre-strained Alloy263 were investigated. Creep rupture tests were conducted at 1023, 1073 K at stress range from 120 to 250 MPa. Creep strength of the pre-strained samples was higher than that of the non-strained samples. However, rupture strain of the pre-strained samples was much lower than that of non-strained samples. In the pre-strained samples, Ni3(Al, Ti)- γ’ and M23C6 inside of the grains precipitated finer than the non-strained samples compared at the same creep time. At grain boundaries, the grain boundary shielding ratio covered by M23C6 carbide showed almost same value among each samples. However, diameter of the M23C6 particle decreased in pre-strained samples. Furthermore, dynamic recrystallization was promoted and precipitation free zone (PFZ) was formed around Ni3Ti-η phase at grain boundary. These observations show that increase in creep-strength of pre-strained sample was due to increase in precipitation strengthening in the grain by fine precipitation of γ’ and M23C6. In addition, resistance against crack propagation at grain boundary increased by the fine precipitation of grain boundary M23C6 even though formation of PFZ and promotion of the dynamic recrystallization. It is estimated that Orowan-stress of pre-strained samples was 1.7 times higher than non-strained samples. It is considered that these strengthening effects overcome the weakening effects in the pre-strained samples.},
 year = {2017}
}

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TY - JOUR
T1 - Effect of Cold Work on Creep Rupture Strength of Alloy263
AU - Naoya Kanno
AU - Yoshiki Shioda
AU - Keiji Kubushiro
Y1 - 2017/10/13
PY - 2017
N1 - https://doi.org/10.11648/j.ijmsa.20170605.16
DO - 10.11648/j.ijmsa.20170605.16
T2 - International Journal of Materials Science and Applications
JF - International Journal of Materials Science and Applications
JO - International Journal of Materials Science and Applications
SP - 260
EP - 268
PB - Science Publishing Group
SN - 2327-2643
UR - https://doi.org/10.11648/j.ijmsa.20170605.16
AB - Creep rupture strength and the microstructure change during creep deformation of pre-strained Alloy263 were investigated. Creep rupture tests were conducted at 1023, 1073 K at stress range from 120 to 250 MPa. Creep strength of the pre-strained samples was higher than that of the non-strained samples. However, rupture strain of the pre-strained samples was much lower than that of non-strained samples. In the pre-strained samples, Ni3(Al, Ti)- γ’ and M23C6 inside of the grains precipitated finer than the non-strained samples compared at the same creep time. At grain boundaries, the grain boundary shielding ratio covered by M23C6 carbide showed almost same value among each samples. However, diameter of the M23C6 particle decreased in pre-strained samples. Furthermore, dynamic recrystallization was promoted and precipitation free zone (PFZ) was formed around Ni3Ti-η phase at grain boundary. These observations show that increase in creep-strength of pre-strained sample was due to increase in precipitation strengthening in the grain by fine precipitation of γ’ and M23C6. In addition, resistance against crack propagation at grain boundary increased by the fine precipitation of grain boundary M23C6 even though formation of PFZ and promotion of the dynamic recrystallization. It is estimated that Orowan-stress of pre-strained samples was 1.7 times higher than non-strained samples. It is considered that these strengthening effects overcome the weakening effects in the pre-strained samples.
VL - 6
IS - 5
ER -

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Author Information

Naoya Kanno

Materials Department, Research Laboratory, IHI Corporation, Yokohama, Japan
Yoshiki Shioda

Materials Department, Research Laboratory, IHI Corporation, Yokohama, Japan
Keiji Kubushiro

Materials Department, Research Laboratory, IHI Corporation, Yokohama, Japan

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APA Style

Naoya Kanno, Yoshiki Shioda, Keiji Kubushiro. (2017). Effect of Cold Work on Creep Rupture Strength of Alloy263. International Journal of Materials Science and Applications, 6(5), 260-268. https://doi.org/10.11648/j.ijmsa.20170605.16

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ACS Style

Naoya Kanno; Yoshiki Shioda; Keiji Kubushiro. Effect of Cold Work on Creep Rupture Strength of Alloy263. Int. J. Mater. Sci. Appl. 2017, 6(5), 260-268. doi: 10.11648/j.ijmsa.20170605.16

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AMA Style

Naoya Kanno, Yoshiki Shioda, Keiji Kubushiro. Effect of Cold Work on Creep Rupture Strength of Alloy263. Int J Mater Sci Appl. 2017;6(5):260-268. doi: 10.11648/j.ijmsa.20170605.16

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@article{10.11648/j.ijmsa.20170605.16,
  author = {Naoya Kanno and Yoshiki Shioda and Keiji Kubushiro},
  title = {Effect of Cold Work on Creep Rupture Strength of Alloy263},
  journal = {International Journal of Materials Science and Applications},
  volume = {6},
  number = {5},
  pages = {260-268},
  doi = {10.11648/j.ijmsa.20170605.16},
  url = {https://doi.org/10.11648/j.ijmsa.20170605.16},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20170605.16},
  abstract = {Creep rupture strength and the microstructure change during creep deformation of pre-strained Alloy263 were investigated. Creep rupture tests were conducted at 1023, 1073 K at stress range from 120 to 250 MPa. Creep strength of the pre-strained samples was higher than that of the non-strained samples. However, rupture strain of the pre-strained samples was much lower than that of non-strained samples. In the pre-strained samples, Ni3(Al, Ti)- γ’ and M23C6 inside of the grains precipitated finer than the non-strained samples compared at the same creep time. At grain boundaries, the grain boundary shielding ratio covered by M23C6 carbide showed almost same value among each samples. However, diameter of the M23C6 particle decreased in pre-strained samples. Furthermore, dynamic recrystallization was promoted and precipitation free zone (PFZ) was formed around Ni3Ti-η phase at grain boundary. These observations show that increase in creep-strength of pre-strained sample was due to increase in precipitation strengthening in the grain by fine precipitation of γ’ and M23C6. In addition, resistance against crack propagation at grain boundary increased by the fine precipitation of grain boundary M23C6 even though formation of PFZ and promotion of the dynamic recrystallization. It is estimated that Orowan-stress of pre-strained samples was 1.7 times higher than non-strained samples. It is considered that these strengthening effects overcome the weakening effects in the pre-strained samples.},
 year = {2017}
}

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