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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/9900

Title: Influence of post-weld solution treatment on mechanical properties and microstructure of fusion zone of cobalt free maraging steel weldment
Authors: KUMAR, DS
SINHA, PP
PRABHU, N
PRABHUGAUNKAR, GV
Keywords: toughness
Issue Date: 2005
Publisher: MANEY PUBLISHING
Citation: SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 10(2), 169-175
Abstract: Post-weld solution treatment (PWST) was carried out on gas tungsten arc weldments of a cobalt free maraging steel. A substantial increase in fusion zone toughness was observed after PWST. It was established that the increase in fusion zone toughness was due to a reduction in austenite content of the fusion zone. The volume fraction of austenite decreased with increasing solution treatment temperature. The PWST led to a decrease in severity of microsegregation, which in turn caused a reduction in austenite content of the fusion zone. The activation energy for the process of homogenisation of austenite was found to be 265 kJ mol(-1). The present work has clearly demonstrated that PWST before aging improves the fusion zone toughness in cobalt free maraging steel weldments.
URI: http://dx.doi.org/10.1179/174329305X36061
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9900
http://hdl.handle.net/10054/9900
ISSN: 1362-1718
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