Bibliographic Citation
Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
---|---|
Title | Failure analysis of an ammonia refrigerant condenser tube |
Creator/Author | Muralidharan, N.G. ; Kaul, R. ; Kasiviswanathan, K.V. ; Jayakumar, T. ; Raj, B. [Indira Gandhi Centre for Atomic Research, Kalpakkam (India)] |
Publication Date | 1996 Apr 01 |
OSTI Identifier | OSTI ID: 230705 |
Other Number(s) | JMEPEG; ISSN 1059-9495 |
Resource Type | Journal Article |
Resource Relation | Journal of Materials Engineering and Performance ; VOL. 5 ; ISSUE: 2 ; PBD: Apr 1996 |
Subject | 36 MATERIALS SCIENCE ; IRON BASE ALLOYS; WELDED JOINTS; FRACTURE PROPERTIES; MANGANESE ADDITIONS; CARBON ADDITIONS; DEFECTS; HYDROGEN; CRACKS; CRACK PROPAGATION; X-RAY RADIOGRAPHY; FRACTOGRAPHY; NUCLEATION; TEMPERATURE DEPENDENCE |
Description/Abstract | A detailed failure analysis was conducted on an ammonia refrigerant condenser tube component that failed catastrophically during its initial hours of operation. Evidence collected clearly demonstrated that the weld between a pipe and a dished end contained a sharp unfused region at its root (lack of penetration). Component failure had started from this weld defect. The hydrogen absorbed during welding facilitated crack initiation from this weld defect during storage of the component after welding. Poor weld toughness at the low operating temperature facilitated crack growth during startup, culminating catastrophic failure as soon as the crack exceeded critical length. |
Country of Publication | United States |
Language | English |
Format | pp. 241-246 ; PL: |
System Entry Date | 2001 May 04 |
Top |