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ISOTHERMAL SECTION OF W-Ni-Cu SYSTEM AT 1017℃

QIU Caian JIN Zhanpeng HUANG Peiyun Central South University of Technology , Changsha , China [Originally published in ACTA METALL SIN (CHINESE EDN) 24 (5) 1988 pp B331—B334 , received 1 June 1987 , in revised form 1 December 1987]

金属学报(英文版)

The isothermal section of the W-Ni-Cu ternary system at 1017℃ was determined by means of diffusion couple specimens,EMPA and X-ray diffraction.Body-centered tetragonal Ni_4W and orthorhombic NiW but no NiW_2 observed in the W-Ni binary sys- tem at this temperature.The solubility ranges of W and Cu in Ni_4W are 16.95- 20.51 at.-% and 0-4.36 at.-%,respectively.The maximum solubility of W in γ(Ni) is 13.11 at.-%.

关键词: W-Ni-Cu system , null , null

W-Ni-Cu三元系相图1017℃等温截面

邱才安 , 金展鹏 , 黄培云

金属学报

采用扩散偶试样,借助电子探针、X射线衍射等分析方法,测定了W-Ni-Cu三元系1017℃等温截面。在该温度下,W-Ni二元系存在体心四方结构的Ni_4W和正交结构的NiW,没有观察到NiW_2。钨在Ni_4W中的固溶度范围为16.95—20.51at.-％(39.00—44.70wt-％),Cu在Ni_4W中的固溶度范围为0—4.36at.-％(3.40wt-％).钨在γ(Ni)固溶体中的最大固溶度为13.11at.-％ (32.10wt-％).

关键词: W-Ni-Cu三元系 , phase diagram , diffusion couple

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