快淬Pr_(1.4)Fe_(10.5)Mo_(1.5)和Nd_(1.4)Fe_(10.5)V_(1.5)合金薄带成相规律研究

The Study of Phases Transformation of Melt-spun Pr_1.4Fe_10.5Mo_1.5 and Nd_1.4Fe_10.5V_1.5 Alloys

采用单辊甩带法制备快淬Pr1．4Fe10．5Mo1．5和Nd1．4Fe10．5V1．5合金薄带．TEM和XRD分析确定了该两种合金快淬薄带为具有TbCu7型结构的1：7相DTA和XRD表明：Pr（Fe，Mo）7转变为1：12相变点为674．78℃，α-Fe析出温度为819．87℃，Nd（Fe,Mo）7转变为1：12相的Nd（Fe，V）12相变点为78417℃，室温至1300℃未见α－Fe析出．

The ribbons of Pr1.4Fe10.5Mo1.5 and Nd1.4Fe10.5V1.5 have been prepared bymelt-spinning process. The ribbons are determined to 1:7 phase with TbCu7-type sturctureby TEM and XRD. DTA and XRD show that the temperature of Pr (Fe, Mo )7 beingtransformed into 1:12 Phase, Pr (Fe, Mo )12, is 674.78℃; α-Fe being decomposed fromPr (Fe, Mo )12 is 819.87℃; the temperature of Nd (Fe, V )7 being transformed into 1: 12phase, Nd (Fe, V )12, is 784.17℃, while in the temperature range from room temperatureto 1 300℃, there is no α-Fe being observed.