ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The level of residual stresses generated in fusion welds has been a major area of interestfor many years. For steels, a major influence on the final state of stress is through martensitictransformation. This is because the martensitic transformation is accompanied by significant shearand volume strains. One way to mitigate the development of residual stress is by controlling theonset of the transformation such that the associated strain is able to compensate for thermalcontraction all the way down to ambient temperatures. In the past it has only been possible to followthe evolution of the phase transformation during cooling of the weld metal using indirect methodssuch as dilatometry and differential scanning calorimetry. This paper describes the first work inwhich the phases present are characterized directly during the cooling of reheated weld metal atconditions typical of those encountered during welding by installing a thermomechanical simulatoron a synchrotron diffraction beam line at ESRF
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.571-572.393.pdf
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