000			01707nab a2200205 4500
005			20260520000930.0
008			260224s2011 xxu
245	0	0	_aCorrosion versus mechanical tests for indirect detection of alpha prime phase in UNS S32520 super duplex stainless steel
260			_a _b _cabr. 2011
270			_a15/04/2011 ; 15/04/2011
300			_a7 p. ; 045004-1 a 045003-7
520			_aTranscripción del resumen del autor: Alpha prime formation leads to material embrittlement and deterioration of corrosion resistance. In the present study, the mechanical and corrosion behavior of super duplex stainless steel UNS S32520 aged at 475°C from 0.5 h to 1,032 h was evaluated using microhardness measurements, Charpy impact tests, electrochemical impedance spectroscopy, and cyclic polarization curves. The sensibility of these tests to the effects of alpha prime phase was investigated. The microhardness test showed a gradual increase in hardness with aging time, whereas the impact tests revealed losses of about 80% in the energy absorption capacity for the material aged for 12 h in comparison with the solution-annealed samples. The most responsive analysis was the impact test, which indirectly revealed the presence of this deleterious phase in samples aged for 0.5 h. The electrochemical impedance spectroscopy and polarization tests were not highly sensitive to the alpha prime phase unless these are present in large amounts in the stainless steel.
581			_a4
773	0		_tCorrosion _g67
942			_cARTICULO
100	1		_aFontes, T.F. _945539
100	1		_aMagnabosco, R. _945540
100	1		_aPadilha, A.F. _945541
999			_c174859 _d174859