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Full-Text Articles in Engineering
Kinetics Of The Peritectic Phase Transformation: In-Situ Measurements And Phase Field Modeling, Dominic J. Phelan, Mark H. Reid, Rian J. Dippenaar
Kinetics Of The Peritectic Phase Transformation: In-Situ Measurements And Phase Field Modeling, Dominic J. Phelan, Mark H. Reid, Rian J. Dippenaar
Faculty of Engineering - Papers (Archive)
An experimental study has been conducted into the role of cooling rate on the kinetics of the peritectic phase transformation in a Fe-C alloy. The interfacial growth velocities of the peritectic phase transformation were measured in situ for cooling rates of 100, 50, and 10 K/min. In-situ observations were obtained using high-temperature laser scanning confocal microscopy (HTLSCM) in a concentric solidification configuration. The experimentally measured interface velocities of the liquid/austenite (L/γ) and austenite/delta-ferrite (γ/δ) interphase boundaries were observed to increase with higher cooling rates. A unique finding of this study was that as the cooling rate increased, there was a …
Magnetic Field Processing To Enhance Critical Current Densities Of Mgb2 Superconductors, S X. Dou, Wai Kong Yeoh, Olga V. Shcherbakova, Josip Horvat, Jung Ho Kim, Alexey V. Pan, David Wexler, Yongqing Li, W X. Li, Z M. Ren, Paul G. Munroe, J Z. Cui
Magnetic Field Processing To Enhance Critical Current Densities Of Mgb2 Superconductors, S X. Dou, Wai Kong Yeoh, Olga V. Shcherbakova, Josip Horvat, Jung Ho Kim, Alexey V. Pan, David Wexler, Yongqing Li, W X. Li, Z M. Ren, Paul G. Munroe, J Z. Cui
Faculty of Engineering - Papers (Archive)
A magnetic field of up to 12T was applied during the sintering process of pure MgB2 and carbon nanotube(CNT)dopedMgB2wires. The authors have demonstrated that magnetic field processing results in grain refinement, homogeneity, and enhancement in Jc(H) and Hirr. The extent of improvement in Jc increases with increasing field. The Jc for a 10T field processed CNTdoped sample increases by a factor of 3 at 10K and 8T and at 20K and 5T, respectively. Hirr for the 10T field processed CNTdoped sample reached 9T at 20K, which exceeded the best value of SiC dopedMgB2 at 20K. Magnetic field processing reduces the …
High Field Zeeman Spectroscopy Of Beryllium In Germanium, P. C. Jobe Prabaker, Peter Fisher, Rodney E. M. Vickers
High Field Zeeman Spectroscopy Of Beryllium In Germanium, P. C. Jobe Prabaker, Peter Fisher, Rodney E. M. Vickers
Faculty of Engineering - Papers (Archive)
The ground states of group II impurities in Ge are complex. For Zn(0) only the lowest is occupied at 4.2 K which is not the case for Be(0). The unperturbed spectrum of Be(0) is more complex than that of Zn(0), the G line being simplest. Reported here is a Zeeman study of the G line of Be(0) at fields up to 6 T.