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Ag-Cu-P系富Cu合金相图500℃等温截面

曾令民 , 庄应烘 , 李德萱 , 林为波

金属学报

用X射线衍射法、μDTA法和金相显微镜法测定了Ag-Cu-P(P<23wt-%)三元系富Cu合金相图500℃等温截面以及这三元系的含2wt—%Ag和含6wt-%P的垂直截面。在500℃等温截面中存在三个单相区、三个两相区和一个三相区。Ag,P在Cu中的最大固溶度分别为1.5wt-%和1.2wt-%,Cu在Ag中的最大固溶度为1.8wt-%。存在一个三元共晶反应,三相共晶点成分(wt-%)约为18Ag-74.5Cu-7.5P。

关键词: Ag-Cu-P三元系 , isothermal section , vertical section

PHASE DIAGRAM OF Nd-Fe-B TERNARY SYSTEM——Ⅱ.Two Vertical Sections with Constant Nd and B Respectively,Passing Through Nd_2Fe_(14) B Point

ZHANG Ning , Central Iron and Steel Research Institute , Ministry of Metallurgical Industry , Beijing , ChinaLUO Yang , San Huan New Material Research and Development Center , Academia Sinica , Beijing , China

金属学报(英文版)

According to the experimental data of phase transition taken from DTA, metallography, SEM and microzone composition, two vertical sections of the ternary phase diagram (B=5.88 at.-%, Nd≤45.41 at.-% andNd_2Fe_(14)BNd_(1.1)Fe_4B_4 , B≤44.56 at.-%) have been drawn in detail. It is verified that the crystallization of both Nd_2Fe_(14)B and Nd_(1.1)Fe_4B_4 phase, during cooling from melt, would take peritectic reaction instead of solid-liquid congruent precipita- tion.

关键词: Nd-Fe-B phase diagram , null

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