X-ray diffraction (XRD) techniques have been used to investigate the microstructural evolution of AK1 304 steel subjected to a number of shock loadings with peak pressure P= 27 GPa and pulse duration r= 15 KS. Experimental results evidenced two stages of a’-martensite formation, characterized by different transformation rates: the passage from the first stage to the second one occurs when the average dimension of micro-shear band intersections reaches a value comparable to the critical size q*. necessary to give rise to stable martensitic embryos. The possibility that a stress-assisted (SA) mechanism becomes operative in the second stage is discussed.
Montanari, R. (1992). Microstructural evolution of AISI 304 steel after repeated shock loadings. MATERIALS LETTERS, 15, 73.
Microstructural evolution of AISI 304 steel after repeated shock loadings
MONTANARI, ROBERTO
1992-01-01
Abstract
X-ray diffraction (XRD) techniques have been used to investigate the microstructural evolution of AK1 304 steel subjected to a number of shock loadings with peak pressure P= 27 GPa and pulse duration r= 15 KS. Experimental results evidenced two stages of a’-martensite formation, characterized by different transformation rates: the passage from the first stage to the second one occurs when the average dimension of micro-shear band intersections reaches a value comparable to the critical size q*. necessary to give rise to stable martensitic embryos. The possibility that a stress-assisted (SA) mechanism becomes operative in the second stage is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
