Embrittlement evaluation and lifetime assessment of hydrocracking pressure vessel made of 3Cr-1Mo low-alloy steel

被引：3
|
作者：
Jahromi, S. A. Jenabali [1 ]
Najmi, M. [1 ]
机构：
[1] Shiraz Univ, Sch Engn, Dept Mat Sci & Engn, Shiraz, Iran
来源：
ENGINEERING FAILURE ANALYSIS | 2007年 / 14卷 / 01期
关键词：
hydrocracking pressure vessel; 3Cr-1Mo Low-alloy steel; temper embrittlement; crack growth;
D O I：
10.1016/j.engfailanal.2005.11.009
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The Cr-Mo steels which are widely used for pressure vessels in refineries and petrochemical plants, have a potential for hydrogen and temper embrittlement. During long-time service the embrittlement leads to decrease of the critical flaw size of brittle fracture and/or to the reduction of the remaining life of a pressure vessel. In this investigation the effect of high temperature and high pressure hydrogen on a vessel, made of 3Cr-1Mo low-alloy steel is studied. Inspections show that the only detected crack in the base metal is originally formed by welding defects and calculations show that it will not grow up. Therefore, it is predicted that the operation of the pressure vessel in normal condition and under regular supervision can be continued. (C) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：164 / 169
页数：6
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