The effects of Zr on crystallization kinetics of Pr-Fe-B amorphous alloys have been investigated by DTA and XRD methods. It was found that for Pr8Fe86-xZrxB6 (x
The sound features of the weld pool status in plasma arc welding were systematically investigated after the sound signal was collected with a microphone. The re
The major unsteady phenomena in semisolid continuous casting process are the breakage and breakout. The essential reasons for them are the passageway blocking o