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 deformation behaviour of the super duplex stainless steel SAF2507 (UNS S32750)under successive uniaxial tensile loading-unloading was investigated with respect to load sharingand inter-phase interactions. The steel consists of 58% austenite and 42% ferrite in volume. By insituX-ray diffraction experiment the evolution of phase-specific stresses with applied load wasmonitored for three successive loading-unloading cycles with the maximum total strains being0.34%, 0.75% and 1.63%, respectively. It was found that yielding occurred earlier in the austeniticphase than in the ferritic phase during the first loading cycle. In the followed loading cycles, bothphases yielded under larger but similar applied stresses. Due to a similar behavior of the phases inthe elasto-plastic regime inter-phase interactions were relatively weak. Low microstresses inducedby the plastic straining resulted in somewhat larger stresses in the ferritic phase
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.524-525.847.pdf
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