Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1576746 | Materials Science and Engineering: A | 2012 | 10 Pages |
Abstract
High temperature creep crack growth tests were carried out on standard compact specimens machined from the welded joint of ASME P92 steel pipe. The creep crack growth behaviors of the distinct sub-regions of welded joint were investigated to clarify the ability of creep crack resistance under high temperature. In addition, good correlations between creep crack growth rate and Câ for different microzones of welded joint were obtained. The tested results revealed that the sub-regions of welded joint exhibited different creep crack behaviors and at the same value of C* the highest creep crack growth rate occurred in the fine grained heat affected zone (FGHAZ) which was known as Type IV cracking zone. Furthermore, finite element method analyses coupled with continuum damage mechanics were conducted to predict the creep crack growth behavior and to study the effect of multistress state on crack propagation.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Lei Zhao, Hongyang Jing, Lianyong Xu, Yongdian Han, Junjie Xiu,