Calculated Phase Diagram of the Ni–W–B Ternary System
Calculated Phase Diagram of the Ni–W–B Ternary System
复制标题
Ni-W-B 三元体系的计算相图
DOI：
10.2320/matertrans1989.40.600
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Guofeng Zhang
中科院分区：
文献类型：
--
作者：
M. Morishita;K. Kôyama;Kouichirou Maeda;Guofeng Zhang
通过热力学计算，在正规溶液近似下绘制了Ni-W-B三元系在B含量小于50 mol%范围内的相图。我们发现三个三元共晶点和两个三元包晶共晶点如下：E1：L（1622 K，51.0 mol%Ni-31.6 mol%W-17.4 mol%B）=（Ni）+W+ NiW2 B 2 E2：L（1260 K，71.0 mol%Ni-7.0 mol%W-22.0 mol%B）=（Ni）+Ni3 B+ NiW2 B 2 E3：L（1291 K，65.4 mol%Ni-4.8 mol%W-29.8 mol%B）=Ni 2 B+Ni 3 B+NiW 2 B 2 P 1：L（2115 K，23.8 mol%Ni-43.1 mol%W-33.1 mol%B）+WB=W 2 B+NiW 2 B 2 P 2：L（1657 K，48.9mol%Ni-33.1mol%W-18.0mol%B）+W2 B=W+NiW 2 B 2计算的相图可望对开发新的镍基热由NiW 2 B 2强化的耐腐蚀和耐磨合金。
The phase diagram of the Ni-W-B ternary system in the region of less than 50 mol%B was constructed by thermodynamic calculation based on the regular solution approximation. We found three ternary eutectic points and two ternary peritecto-eutectic points as follows: E 1 : L(1622 K, 51.0 mol%Ni-31.6 mol%W-17.4 mol%B)=(Ni)+W+NiW 2 B 2 E 2 : L(1260 K, 71.0 mol%Ni-7.0 mol%W-22.0 mol%B)=(Ni)+Ni 3 B+NiW 2 B 2 E 3 : L(1291 K, 65.4 mol%Ni-4.8 mol%W-29.8 mol%B)=Ni 2 B+Ni 3 B+NiW 2 B 2 P 1 : L(2115 K, 23.8 mol%Ni-43.1 mol%W-33.1 mol%B)+WB=W 2 B+NiW 2 B 2 P 2 : L(1657 K, 48.9 mol%Ni-33.1 mol%W-18.0 mol%B)+W 2 B=W+NiW 2 B 2 The calculated phase diagram is expected to be useful for the development of new Ni-based heat-, corrosion- and wear-resistance alloys strengthened by NiW 2 B 2 .