ROOM TEMPERATURE SECTION OF Cu-Dy(≤wt-%)-Ni TERNARY PHASE DIAGRAM

The room temperature section of Cu-Dy(≤35wt-%)-Ni phase diagram has been determinedby means of X-ray diffraction technique.The results are as follows.four single-phase regions(α,Dy_2Ni_(17),DyNi_5 and DyCu_5),five two-phase regions(α+Dy_2N_(17),Dy_2Ni_(17)+DyNi_5,DyCu_5+DyNi_5,α+DyNi_5 and DyCu_5+α)and two three-phase regions(α+Dy_2Ni_(17)+DyNi_5 and α+DyNi_5+DyCu_5)exist in the seetion.No any new phase was ob-servered.The solubility of Dy in α-phase is up to 2 wt-%.     

410℃ ISOTHERMAL SECTION OF Al-Cu-Sb TERNARY SYSTEM PHASE DIAGRAM

本文用X射线粉末衍射法和电子探针法测定了Al-Cu-Sb三元系相图的410℃等温截面。该截面由12个单相区、21个两相区和10个三相区构成。     

ROOM TEMPERATURE AND 750℃ ISOTHERMAL SECTIONS OF Ag-Pd-Gd TERNARY SYSTEM (Gd≤25 at.-％) PHASE DIAGRAM

采用X射线衍射和金相显微镜分析方法研究了含0—25at.-％Gd的Ag-Pd-Gd三元系,作出了该体系部分相图的750℃等温截面和室温截面。发现在该二截面上都分别存在三个单相区、三个两相区和一个三相区。     

ISOTHERMAL SECTION OF PHASE DIAGRAM IN Ti-Al-Cr TERNARY SYSTEM AT 1000℃

应用多元扩散偶－电子探针微区分析技术及Ｘ射线衍射分析方法，测定了Ｔｉ－Ａｌ－Ｃｒ三元系相图１０００℃等温截面的含Ａｌ量达７５ａｔ．－％，含Ｃｒ量达７０ａｔ．－％的大部分区域。确定了Ｌｌ２结构的三元化合物相及其成分范围，完整地测定了ＴｉＡｌ，Ｔｉ３Ａｌ，ＴｉＡｌ２及ＴｉＡｌ３的相区范围及相平衡关系，明确了β－Ｔｉ相与ＴｉＣｒ２相的平衡关系及ＴｉＣｒ２相的成分范围     

PARTIAL PHASE DIAGRAM OF Fe-Si (≤8wt-%)-C(≤0.1wt-%) AND PSEUDOBINARY SECTIONS OF Fe-Si AND Fe-C

<正> 在具有实用意义的Fe-Si(≤8wt-％)系中,碳含量在万分之几范围内的变化,足以显著改变α,γ单相区和α+γ等双相区的存在范围,硅钢生产工艺参数均依据相图。至于借脱碳以发展柱状晶的特殊热处理工艺,更离不开相图的指引。所以长期来曾对Fe-Si-C三元系中各相界进行了大量的实验研究。但到目前为止,文献中尚缺少有关此成分范围的较详细而精确的相图可借鉴。为此,我们绘制了Fe-Si(≤8wt-％)-C(≤0.1wt-％)局部三元三维相图。同时介绍,借发展柱状晶特殊热处理工艺来校核γ和γ+α存在温区的有效方法。最后,在附录中分别给出一系列等硅和等碳赝二元剖面,相应的成分间隔各为1wt-％Si和0.02wt-％C。     

Fe-Si(≤8wt-％)-C(≤0.1wt-％)局部三元相图和等硅与等碳赝二元剖面

在具有实用意义的Fe-Si(≤8wt-％)系中,碳含量在万分之几范围内的变化,足以显著改变α,γ单相区和α+γ等双相区的存在范围,硅钢生产工艺参数均依据相图。至于借脱碳以发展柱状晶的特殊热处理工艺,更离不开相图的指引。所以长期来曾对Fe-Si-C三元系中各相界进行了大量的实验研究。但到目前为止,文献中尚缺少有关此成分范围的较详细而精确的相图可借鉴。为此,我们绘制了Fe-Si(≤8wt-％)-C(≤0.1wt-％)局部三元三维相图。同时介绍,借发展柱状晶特殊热处理工艺来校核γ和γ+α存在温区的有效方法。最后,在附录中分别给出一系列等硅和等碳赝二元剖面,相应的成分间隔各为1wt-％Si和0.02wt-％C。     

A PART OF ROOM TEMPERATURE SECTION OF PHASE DIAGRAM OF Dy-Co-Ni(Dy≤35.6 wt-%)SYSTEM

本文用X射线粉末衍射法研究了Dy≤35.6wt-%(≤16.7at.-%)成分区域内Dy-Co-Ni三元合金系相图的室温截面.它包括5个单相区,6个双相区和4个三相区,未出现新相.     

ROOM TEMPERATURE AND 700℃ ISOTHERMAL SECTIONS OF Gd-Pd-Pt(Gd≤33 at. -％) PHASE DIAGRAM

采用X射线衍射和金相显微分析方法研究了Gd-Pd-Pt三元系中含0—33at。-％Gd的区域,测定了它的室温和700℃等温截面。在该二截面上都分别存在5个单相区(固溶体Pd(Pt)或Pt(Pd),GdPd_3,GdPd_2,GdPt_2和GdPt_5),7个二相区(Pd(Pt)+GdPd_3,Pd(Pt)+GdPt_?,GdPd_3+GdPd_2,GdPd_2+GdPt_2,GdPt_2+GdPd_3,GdPt_2+GdPt_5和GdPd_3+GdPt_5),3个三相区(Pd(Pt)+GdPt_5+GdPd_3,GdPt_5+GdPd_3+GdPt_2和GdPd_3+GdPd_2+GdPt_2)。未发现任何新的三元金属间化合物。     

A PART OF ROOM TEMPERATURE SECTION OF PHASE DIAGRAM OF Y-Cu-Ni(Y≤16.7 at.-%)SYSTEM

本文用X射线粉末衍射分析法测定了钇≤16.7at.-%成分区域内Y-Cu-Ni三元系合金相图的室温截面.截面中包含有4个单相区:称为α,β,ε,ω相区,5个两相区:α+β,α+ε,α+ω,β+ω,ε+ω;2个三相区:α+β+ω,α+ε+ω.X射线分析表明,钇在α在相中的最大固溶度约为2 Wt-%.     

ROOM TEMPERATURE AND 750℃ ISOTHERMAL SECTION OF Ag-Pd-Gd(Gd≤25 AT.-%)PHASE DIAGRAM

The room temperature section and the 750℃ isothermal section of the Ag-Pd-Gd ternaryphase diagram containing 0—25 at.-% Gd are constructed by X—ray diffraction analysis andoptical microscopy.Each section consists of 3 single phase regions,3 bi-phase regions and Itri-phase region respectively.     

PHASE DIAGRAM OF Bi-Pb-T1 TERNARY SYSTEM

Isothermal section at 25℃ of phase diagram and phase structure of Bi-Pb-Tl ternary systemhave been studied by means of room and high temperature X-ray diffraction and quenching.     

PHASE DIAGRAM OF Nd-Pd(Nd≤50at.-％) BINARY SYSTEM

采用X射线衍射,示差热分析和金相等方法研究了Nd-Pd系相图中含0—50at-％Nd的区域。发现在该区域内存在6个金属间化合物:NdPd_5,NdPd_3,NdPd_2,Nd_2Pd_3,Nd_1Pd_5和NdPd。其中,NdPd_3,Nd_4Pd_5和NdPd是固液共熔化合物。还测出NdPd_5为SmPt_5型结构,NdPd_?为AuCu_3型结构,低于708±4℃的NdPd为CrB型结构。在该区域内共有3个共晶反应和3个包晶反应。     

550 AND 450℃ ISOTHERMAL SECTIONS OF Fe-Ni-C PHASE DIAGRAM

用电子探针波谱(WDS)及扫描透射电镜能谱法(EDS)测定了Fe—Ni—C相图的550、450℃等温截面。     

410℃ ISOTHERMAL SECTION OF Al-Cu-Sb PHASE DIAGRAM

The 410℃ isothermal section of the phase diagram of Al-Cu-Sb ternary system has been de-termined by means of X-ray powder diffraction method and electron probe microanalysis.The section determined consists of 12 single-phase regions,21 bi-phase regions and 10tri-phase regions.     

ISOTHERMAL SECTION AT 1000 AND 1100℃ OF Fe-Mn-AI SYSTEM PHASE DIAGRAM

利用扩散偶技术和合金法测定了Fe-Mn-Al三元系1000和1100℃等温截面的Fe-Mn侧的相平衡关系,结果表明1000℃有一(α+y+β)三相区,此外,固/气扩散偶被用来测定相平衡成分,表明这种方法对于具有挥发性组元的体系是可行的。     

PHASE BOUNDARIES OF SINGLE-PHASE ε-AND γ′-FIELDS IN Fe-C-N PHASE DIAGRAM

由低温下的溶解度导出氮在α-Fe中的活度数据,求得了Fe-C-N三元系中各二元交互作用系数,并导出了该系中的分配方程组.依此在PDP-11/23计算机上计算了γ′及ε单相区界域.计算结果表明:原Naumann和Langenscheid相图中的γ′相区正确,但ε相区需修正.计算结果与Wells及Bell的大部分实验结果符合.采用石墨为标准态(见附录证明)的计算也得到相同结论.     

700℃ ISOTHERMAL SECTION OF THE Pd-Ru-Gd PARTIAL PHASE DIAGRAM

The 700℃ isothermal section of the Pd-Ru-Gd partial ternary phase diagram containing more palladium than ruthenium was determined by X-rag diffraction analysis and optical microscopy. The section consists of seven single-phase regions,eleven two-phase regions and five three-phase regions. A new ternary compound Pd2RuGd2,which exhibits a tetragonal structure with a=0.7492 nm and c=0.7445 nm, has been found.     

ISOTHERMAL SECTION AT 1000 AND 1100℃ OF Fe-Mn-Al PHASE DIAGRAM

Phase equilibria at Fe-Mn side of isothermal section at 1000 and 1100℃ in Fe-Mn-Al system have been determined using the diffusion couple technique and metallography.A three-phase,α+γ+β,region was found at 1000℃.The method of solid/gas diffusioncouple used to determine equilibrium phase composition is believed to be feasible for thesystem containing volatile component.     

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

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-％).     

CALCULATION OF PHASE DIAGRAM FOR PSEUDOBINARY GaAs-InAs

ＣＡＬＣＵＬＡＴＩＯＮＯＦＰＨＡＳＥＤＩＡＧＲＡＭＦＯＲＰＳＥＵＤＯＢＩＮＡＲＹＧａＡｓ－ＩｎＡｓ￥Ｑｉａｏ，Ｈｕａｎ；Ｓｈｅｎ，Ｊｉａｎｙｕｎ；Ｌｉ，Ｇｕｏｘｕｎ（ＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｆｏｒＮｏｎｆｅｒｒｏｕｓＭｅｔａｌ...