DETERMINATION OF MECHANICAL PROPERTIES OF P91 STEEL BY MEANS OF MAGNETIC BARKHAUSEN EMISSION

In this work,an attempt at determination of mechanical properties by means of a method basedonmagneticBarkhausenemissionmeasurementswasproposed.Thespecimensmade of P91steel weresubjected to creeporplasticflowwhichwereinterrupted after arangeof selectedtimeperiodsinordertoachievespecimenswithanincreasinglevelofstrain.Subsequently, measurements of magnetic Barkhausenemission were carried out, and then static tensiletests wereperformedinorderto checkvariationsofbasicmechanicalparameters.It is shown that evident relationships between the yield point/ultimate tensile strength and someparametersoftheBarkhausenemissionexist.

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