Performance degradation of 2.25Cr1Mo steel served in hydrogenation reactor

Jie Wang; Bao Hua Nie; Cheng Cai; Zheng Zhang

doi:10.11868/j.issn.1001-4381.2015.01.015

Performance degradation of 2.25Cr1Mo steel served in hydrogenation reactor

Jie Wang
, Bao Hua Nie
, Cheng Cai
, Zheng Zhang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The mechanical properties of original and hanging over hydrogenation reactor 2.25Cr1Mo steel were investigated in order to analyze the material degradation. The microstructure and fracture morphology of original and in-service alloy were observed by metallographic microscope and scanning electron microscope. The results show that the 120000h hanging time leads to obvious performance degradation. The ductile to brittle transition temperature of 2.25Cr1Mo steel increases. A number of cracks appear at the grain boundary and carbides. Carbides tend to chain distribution and coarsening which results in grain boundary weakness. The decrease of matrix alloying elements content causes grain boundary segregation of phosphorus and lower tempering resistance.

Original language	English
Pages (from-to)	82-88
Number of pages	7
Journal	Journal of Materials Engineering
Volume	43
Issue number	1
DOIs	https://doi.org/10.11868/j.issn.1001-4381.2015.01.015
State	Published - 1 Jan 2015

Keywords

Hydrogenation reactor
Mechanical property
Microstructure

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10.11868/j.issn.1001-4381.2015.01.015

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title = "Performance degradation of 2.25Cr1Mo steel served in hydrogenation reactor",

abstract = "The mechanical properties of original and hanging over hydrogenation reactor 2.25Cr1Mo steel were investigated in order to analyze the material degradation. The microstructure and fracture morphology of original and in-service alloy were observed by metallographic microscope and scanning electron microscope. The results show that the 120000h hanging time leads to obvious performance degradation. The ductile to brittle transition temperature of 2.25Cr1Mo steel increases. A number of cracks appear at the grain boundary and carbides. Carbides tend to chain distribution and coarsening which results in grain boundary weakness. The decrease of matrix alloying elements content causes grain boundary segregation of phosphorus and lower tempering resistance.",

keywords = "Hydrogenation reactor, Mechanical property, Microstructure",

author = "Jie Wang and Nie, \{Bao Hua\} and Cheng Cai and Zheng Zhang",

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doi = "10.11868/j.issn.1001-4381.2015.01.015",

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T1 - Performance degradation of 2.25Cr1Mo steel served in hydrogenation reactor

AU - Wang, Jie

AU - Nie, Bao Hua

AU - Cai, Cheng

AU - Zhang, Zheng

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The mechanical properties of original and hanging over hydrogenation reactor 2.25Cr1Mo steel were investigated in order to analyze the material degradation. The microstructure and fracture morphology of original and in-service alloy were observed by metallographic microscope and scanning electron microscope. The results show that the 120000h hanging time leads to obvious performance degradation. The ductile to brittle transition temperature of 2.25Cr1Mo steel increases. A number of cracks appear at the grain boundary and carbides. Carbides tend to chain distribution and coarsening which results in grain boundary weakness. The decrease of matrix alloying elements content causes grain boundary segregation of phosphorus and lower tempering resistance.

AB - The mechanical properties of original and hanging over hydrogenation reactor 2.25Cr1Mo steel were investigated in order to analyze the material degradation. The microstructure and fracture morphology of original and in-service alloy were observed by metallographic microscope and scanning electron microscope. The results show that the 120000h hanging time leads to obvious performance degradation. The ductile to brittle transition temperature of 2.25Cr1Mo steel increases. A number of cracks appear at the grain boundary and carbides. Carbides tend to chain distribution and coarsening which results in grain boundary weakness. The decrease of matrix alloying elements content causes grain boundary segregation of phosphorus and lower tempering resistance.

KW - Hydrogenation reactor

KW - Mechanical property

KW - Microstructure

UR - https://www.scopus.com/pages/publications/84922347832

U2 - 10.11868/j.issn.1001-4381.2015.01.015

DO - 10.11868/j.issn.1001-4381.2015.01.015

M3 - 文章

AN - SCOPUS:84922347832

SN - 1001-4381

VL - 43

SP - 82

EP - 88

JO - Journal of Materials Engineering

JF - Journal of Materials Engineering

IS - 1

ER -

Performance degradation of 2.25Cr1Mo steel served in hydrogenation reactor

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