2024-03-29T02:30:07Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/219102021-06-23T09:54:15Zcom_10324_1136com_10324_931com_10324_894col_10324_1218
Abnormal magnetic behaviour of powder metallurgy austenitic stainless steels sintered in nitrogen
García Cabezón, Ana Cristina
Martín Pedrosa, Fernando
Blanco Val, María Yolanda
Magnetic measurement
Powder metallurgy
Austenitic stainless steel
The magnetic response of AISI 304L and AISI 316L obtained through powder metallurgy and sintered in nitrogen were studied. AISI 304L sintered in nitrogen showed a ferromagnetic behaviour in as-sintered state while AISI 316L was paramagnetic. After solution annealing both were paramagnetic. Magnetic behaviour was analysed by using a vibrating sample magnetometer, a magnetic ferritscope and magnetic etching. A microstructural characterization was performed by means of optical metallography, X-ray diffraction, scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDS). Some samples when needed were submitted to aged heat treatments at 675 and 875 °C for 90 min, 4, 6, 8 or 48 h. The main microstructural feature found was the presence of a lamellar constituent formed by nitride precipitates and an interlamellar matrix of austenite and/or ferrite. The abnormal magnetic response was explained based on this.
2016-12-22
2016-12-22
2009
info:eu-repo/semantics/article
Journal of Magnetism and Magnetic Materials 2009, 321, 3171–3177
0304-8853
http://uvadoc.uva.es/handle/10324/21910
http://dx.doi.org/10.1016/j.jmmm.2009.05.025
3171
3177
Abnormal magnetic behaviour of powder metallurgy austenitic stainless steels sintered in nitrogen
321
eng
info:eu-repo/semantics/openAccess
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