快淬Pr1.4Fe10.5Mo1.5和Nd1.4Fe10.5V1.5合金薄带成相规律研究

快淬Pr_1.4Fe_10.5Mo_1.5和Nd_1.4Fe_10.5V_1.5合金薄带成相规律研究

摘要: 采用单辊甩带法制备快淬Pr_1.4Fe_10.5Mo_1.5和Nd_1.4Fe_10.5V_1.5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.

Abstract: The ribbons of Pr_1.4Fe_10.5Mo_1.5 and Nd_1.4Fe_10.5V_1.5 have been prepared by melt-spinning process. The ribbons are determined to 1:7 phase with TbCu₇-type sturcture by TEM and XRD. DTA and XRD show that the temperature of Pr(Fe, Mo)₇ being transformed into 1:12 Phase, Pr(Fe, Mo)₁₂, is 674. 78℃; α-Fe being decomposed from Pr(Fe,Mo)₁₂ is 819.87℃; the temperature of Nd(Fe,V)₇ being transformed into 1:12 phase, Nd (Fe,V)₁₂, is 784.17℃, while in the temperature range from room temperature to 1300℃, there is no α-Fe being observed.