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:
We have studied the effect of a post-weld heat treatment on plasma arc welds on Zircaloy4 plates. The samples consist of two 100 mm long, 50 mm wide, and 6.25 mm thick plates, weldedalong the rolling (longitudinal) direction. The heat-treatment consisted of a steady increase intemperature from room temperature to 450oC over a period of 4.5 hours; followed by cooling withan equivalent cooling rate. Residual strains and stresses along the longitudinal, transverse andnormal directions on an as-welded and a heat-treated specimen were measured by neutrondiffraction on the ENGIN-X beamline at the Isis Facility, Rutherford Laboratory, UK. Peak tensilestresses of (105±25) MPa were found in the as-welded specimen, which were reduced to (70±20)MPa after the heat-treatment. Thermal compressive stresses of (-80±20) MPa were found along thenormal direction, which were not affected by the heat treatment. The use of a full-pattern Rietveldrefinement for the determination of bulk strains in Zircaloy specimens is also discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.524-525.491.pdf
