Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments

C. R. Das, S. K. Albert, K. Laha, J. Swaminathan, S. Ravi, A. K. Bhaduri, B. S. Murty, Peter Mayr

Research output: Contribution to journalJournal articleResearchpeer-review

77 Downloads (Pure)

Abstract

The grain boundary structure is usually described by the coincidence site lattice (CSL) model based on the misorientation of adjoining crystals. Therefore, the objective of the present investigation is to seek the correlation between CSL fraction and creep resistance of modified 9Cr-1Mo steel (P91) with and without boron addition. Results showed that CSL fraction increases with increase in heat treatment temperature and this increase is more prominent in boron containing modified 9Cr-1Mo steel. Creep test results show the increase in creep rupture life with increase in CSL fraction for both the base metals; but this increase is more in boron containing steel than the boron free steel. This improvement is attributed to the stability of CSL boundaries in the material. In spite of the increase in CSL boundaries with normalizing heat treatment temperature, boron free material shows less creep rupture life in its weldment than the boron containing steel weldment. (C) 2014 The Authors. Published by Elsevier Ltd.
Original languageEnglish
JournalProcedia Engineering
Volume86
Pages (from-to)80-87
ISSN1877-7058
DOIs
Publication statusPublished - 2014
Externally publishedYes

Bibliographical note

© 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/3.0/)

Cite this

Das, C. R., Albert, S. K., Laha, K., Swaminathan, J., Ravi, S., Bhaduri, A. K., ... Mayr, P. (2014). Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments. Procedia Engineering, 86, 80-87. https://doi.org/10.1016/j.proeng.2014.11.014
Das, C. R. ; Albert, S. K. ; Laha, K. ; Swaminathan, J. ; Ravi, S. ; Bhaduri, A. K. ; Murty, B. S. ; Mayr, Peter. / Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments. In: Procedia Engineering. 2014 ; Vol. 86. pp. 80-87.
@article{811577c70e1540e382a36e91f7ba9291,
title = "Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments",
abstract = "The grain boundary structure is usually described by the coincidence site lattice (CSL) model based on the misorientation of adjoining crystals. Therefore, the objective of the present investigation is to seek the correlation between CSL fraction and creep resistance of modified 9Cr-1Mo steel (P91) with and without boron addition. Results showed that CSL fraction increases with increase in heat treatment temperature and this increase is more prominent in boron containing modified 9Cr-1Mo steel. Creep test results show the increase in creep rupture life with increase in CSL fraction for both the base metals; but this increase is more in boron containing steel than the boron free steel. This improvement is attributed to the stability of CSL boundaries in the material. In spite of the increase in CSL boundaries with normalizing heat treatment temperature, boron free material shows less creep rupture life in its weldment than the boron containing steel weldment. (C) 2014 The Authors. Published by Elsevier Ltd.",
author = "Das, {C. R.} and Albert, {S. K.} and K. Laha and J. Swaminathan and S. Ravi and Bhaduri, {A. K.} and Murty, {B. S.} and Peter Mayr",
note = "{\circledC} 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/)",
year = "2014",
doi = "10.1016/j.proeng.2014.11.014",
language = "English",
volume = "86",
pages = "80--87",
journal = "Procedia Engineering",
issn = "1877-7058",
publisher = "Elsevier",

}

Das, CR, Albert, SK, Laha, K, Swaminathan, J, Ravi, S, Bhaduri, AK, Murty, BS & Mayr, P 2014, 'Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments', Procedia Engineering, vol. 86, pp. 80-87. https://doi.org/10.1016/j.proeng.2014.11.014

Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments. / Das, C. R.; Albert, S. K.; Laha, K.; Swaminathan, J.; Ravi, S.; Bhaduri, A. K.; Murty, B. S.; Mayr, Peter.

In: Procedia Engineering, Vol. 86, 2014, p. 80-87.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Influence of Coincidence Site Lattice Boundary on Creep Resistance of P91 Steel Weldments

AU - Das, C. R.

AU - Albert, S. K.

AU - Laha, K.

AU - Swaminathan, J.

AU - Ravi, S.

AU - Bhaduri, A. K.

AU - Murty, B. S.

AU - Mayr, Peter

N1 - © 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/)

PY - 2014

Y1 - 2014

N2 - The grain boundary structure is usually described by the coincidence site lattice (CSL) model based on the misorientation of adjoining crystals. Therefore, the objective of the present investigation is to seek the correlation between CSL fraction and creep resistance of modified 9Cr-1Mo steel (P91) with and without boron addition. Results showed that CSL fraction increases with increase in heat treatment temperature and this increase is more prominent in boron containing modified 9Cr-1Mo steel. Creep test results show the increase in creep rupture life with increase in CSL fraction for both the base metals; but this increase is more in boron containing steel than the boron free steel. This improvement is attributed to the stability of CSL boundaries in the material. In spite of the increase in CSL boundaries with normalizing heat treatment temperature, boron free material shows less creep rupture life in its weldment than the boron containing steel weldment. (C) 2014 The Authors. Published by Elsevier Ltd.

AB - The grain boundary structure is usually described by the coincidence site lattice (CSL) model based on the misorientation of adjoining crystals. Therefore, the objective of the present investigation is to seek the correlation between CSL fraction and creep resistance of modified 9Cr-1Mo steel (P91) with and without boron addition. Results showed that CSL fraction increases with increase in heat treatment temperature and this increase is more prominent in boron containing modified 9Cr-1Mo steel. Creep test results show the increase in creep rupture life with increase in CSL fraction for both the base metals; but this increase is more in boron containing steel than the boron free steel. This improvement is attributed to the stability of CSL boundaries in the material. In spite of the increase in CSL boundaries with normalizing heat treatment temperature, boron free material shows less creep rupture life in its weldment than the boron containing steel weldment. (C) 2014 The Authors. Published by Elsevier Ltd.

U2 - 10.1016/j.proeng.2014.11.014

DO - 10.1016/j.proeng.2014.11.014

M3 - Journal article

VL - 86

SP - 80

EP - 87

JO - Procedia Engineering

JF - Procedia Engineering

SN - 1877-7058

ER -