Relationship between Laves phase and the impact brittleness of P92 steel reevaluated

Wanli Zhong; Wei Wang; Xu Yang; Wensheng Li; Wei Yan; Wei Sha; Wei Wang; Yiyin Shan; Ke Yang

doi:10.1016/j.msea.2015.05.012

Relationship between Laves phase and the impact brittleness of P92 steel reevaluated

Wanli Zhong, Wei Wang, Xu Yang, Wensheng Li, Wei Yan, Wei Sha, Wei Wang, Yiyin Shan, Ke Yang

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Abstract

Laves phase has been widely accepted to cause the impact brittleness of 9–12Cr martensitic heat-resistant steels after long time aging at elevated temperatures. However, in the present research, the impact toughness of the already brittle P92 steel aged at 600 °C for 2035 h could be restored to the original level by reheating at 700 °C for 1 h, with Laves phase barely changed. This interesting result strongly indicated that the presence of Laves phase might not be the real reason for the impact brittleness.

Original language	English
Pages (from-to)	252–258
Number of pages	7
Journal	Materials Science and Engineering A
Volume	639
Early online date	14 May 2015
DOIs	https://doi.org/10.1016/j.msea.2015.05.012
Publication status	Published - 15 Jul 2015

Keywords

Steel
Precipitation
Fracture
Mechanical characterization
Electron microscopy
Phase transformation

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10.1016/j.msea.2015.05.012

Relationship between Laves phase and the impact brittleness of P92 steel reevaluated
© 2015, Elsevier. Licensed under the Creative Commons Attribution -NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.
Accepted author manuscript, 2.03 MB

http://www.sciencedirect.com/science/article/pii/S0921509315005237

Cite this

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title = "Relationship between Laves phase and the impact brittleness of P92 steel reevaluated",

abstract = "Laves phase has been widely accepted to cause the impact brittleness of 9–12Cr martensitic heat-resistant steels after long time aging at elevated temperatures. However, in the present research, the impact toughness of the already brittle P92 steel aged at 600 °C for 2035 h could be restored to the original level by reheating at 700 °C for 1 h, with Laves phase barely changed. This interesting result strongly indicated that the presence of Laves phase might not be the real reason for the impact brittleness.",

keywords = "Steel, Precipitation, Fracture, Mechanical characterization, Electron microscopy, Phase transformation",

author = "Wanli Zhong and Wei Wang and Xu Yang and Wensheng Li and Wei Yan and Wei Sha and Wei Wang and Yiyin Shan and Ke Yang",

year = "2015",

month = jul,

day = "15",

doi = "10.1016/j.msea.2015.05.012",

language = "English",

volume = "639",

pages = "252–258",

journal = "Materials Science and Engineering A",

issn = "0921-5093",

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TY - JOUR

T1 - Relationship between Laves phase and the impact brittleness of P92 steel reevaluated

AU - Zhong, Wanli

AU - Wang, Wei

AU - Yang, Xu

AU - Li, Wensheng

AU - Yan, Wei

AU - Sha, Wei

AU - Wang, Wei

AU - Shan, Yiyin

AU - Yang, Ke

PY - 2015/7/15

Y1 - 2015/7/15

N2 - Laves phase has been widely accepted to cause the impact brittleness of 9–12Cr martensitic heat-resistant steels after long time aging at elevated temperatures. However, in the present research, the impact toughness of the already brittle P92 steel aged at 600 °C for 2035 h could be restored to the original level by reheating at 700 °C for 1 h, with Laves phase barely changed. This interesting result strongly indicated that the presence of Laves phase might not be the real reason for the impact brittleness.

AB - Laves phase has been widely accepted to cause the impact brittleness of 9–12Cr martensitic heat-resistant steels after long time aging at elevated temperatures. However, in the present research, the impact toughness of the already brittle P92 steel aged at 600 °C for 2035 h could be restored to the original level by reheating at 700 °C for 1 h, with Laves phase barely changed. This interesting result strongly indicated that the presence of Laves phase might not be the real reason for the impact brittleness.

KW - Steel

KW - Precipitation

KW - Fracture

KW - Mechanical characterization

KW - Electron microscopy

KW - Phase transformation

U2 - 10.1016/j.msea.2015.05.012

DO - 10.1016/j.msea.2015.05.012

M3 - Article

SN - 0921-5093

VL - 639

SP - 252

EP - 258

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Relationship between Laves phase and the impact brittleness of P92 steel reevaluated

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Keywords

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