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The electromagnetic characterization of dual phase stainless steel (SS2205) containing ferrite and austenite phase has been carried out by a magnetic NDE device MagStar. The efficiency of device has been demonstrated by generating different volume fraction of phases by suitable heat-treatment of the steel. A good correlation has been found between the magnetic and microstructural parameters of heat...
Magnetic Barkhausen emissions (MBE) and magnetic hysteresis loop techniques have been used to correlate the magnetic properties with creep behaviour in modified 9Cr–1Mo steel. Formation of massive carbides like M 23 C 6 , Laves phase (Fe 2 Mo) and Z-phase are the cause of creep failure in the present material. The root mean square voltage of MBE signal increased from the secondary...
Magnetic hysteresis loop and Barkhausen emissions were recorded and analysed for 5Cr–0.5Mo steel after ageing at 600°C for various lengths of time. At the initial stage of ageing the interstitial carbon diffuses towards the grain boundary making the matrix magnetically softer. During this stage, extending up to 200h of ageing, magnetic softness was found to be increasing. This was associated with...
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