Effect of shock waves on microstructure and fracture behavior of pre-cracked steel weld metal

Authors
Long, X Guo, XN Chen, HN Chen, LS
Citation
X. Long et al., Effect of shock waves on microstructure and fracture behavior of pre-cracked steel weld metal, MAT SCI E A, 293(1-2), 2000, pp. 247-251
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
293
Issue
1-2
Year of publication
2000
Pages
247 - 251
Database
ISI
SICI code
0921-5093(20001130)293:1-2<247:EOSWOM>2.0.ZU;2-Q
Abstract
Pre-cracked C-Mn Steel weld metal specimens were shack-treated (with a peak pressure of 5 GPa). The fracture behavior of the shock-treated specimens a nd the microstructure around the pre-crack tip were investigated. The resul ts show that the shock-treated specimens have significantly increased fract ure resistance ability at various test temperatures. A softening fine grain zone was found around the pre-crack tip. It was believed that the softenin g fine grain zone: was formed during the adiabatic shearing process when sh ock waves pass through the specimen. The zone around the pre-crack tip is s uggested to play an important role in influencing the fracture behavior of the shock-treated specimen. (C) 2000 Elsevier Science S.A. All rights reser ved.