Homogenisation approach in analysis of creep behaviour in multipass weld. (January 2014)

• Record Type: Journal Article
• Authors: Lvov, I.; Naumenko, K.; Altenbach, H.
• Is Part Of: Materials science and technology. Volume 30:Number 1(2014:Jan.)
• Page Start: 50
• Page End: 53
• Publication Date: 2014-01
• Subjects: Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1179/1743284713Y.0000000250
• Languages: English
• ISSNs: 0267-0836

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>Different zones of welded joints are subjected to different temperature fields during the process of welding. Furthermore, in multi-pass welding, heating and cooling cycles, which occur due to the overlap of the pass beads, lead to the formation of complex microstructures. A method of evaluating the creep response of a multipass weld based on the micromacro mechanics approach is introduced. Multipass weld microstructures consisting of a columnar zone, which can be related to the microstructure of a single pass weld, and a heat affected zones are considered. To model the microstructure of the multipass weld metal the representative volume element (RVE) method is employed. Numerical tests on one-component loading of the RVEs are performed and creep material properties for equivalent weld material reported for welds with different number of passes.</p> </abstract>