Volume 0,Issue 4,1994 Table of Contents
1994(4).
Abstract:
he activation characteristics of the hydride negative electrode made of M1(NiCoMnTi)5 alloy powder microencapsulated by electroless Ni-P plating has been investigated. The results show that the microencapsulation of the hydrogen storage alloy powder by Ni-P plating increases the discharge capacity of the fabricated electrode, and that the charge- discharge cycling numbers increases in terms o f reaching to the maximum dischargecapacity of the electrode. Furthermore, it is found that a smaller cycling current makes the activation of the hydride negative electrode moreeasy.
he activation characteristics of the hydride negative electrode made of M1(NiCoMnTi)5 alloy powder microencapsulated by electroless Ni-P plating has been investigated. The results show that the microencapsulation of the hydrogen storage alloy powder by Ni-P plating increases the discharge capacity of the fabricated electrode, and that the charge- discharge cycling numbers increases in terms o f reaching to the maximum dischargecapacity of the electrode. Furthermore, it is found that a smaller cycling current makes the activation of the hydride negative electrode moreeasy.
1994(4).
Abstract:
有模拟和计算的方法，确认了构成金属－类金属非晶态合金的菱面体单元结构（ＲＵＳ），并根据三条原则（类金属原子首先位于大八面体中心；除大八面体中心和其棱中心处的类金属原子之间可以存在一个类金属－类金属键外，其它位置处的原子之间不允许存在类金属－类金属键；同一成分，具有多种类金属原于排列方式时，取金属－类金属键最多的情况），找出了各种ＲＵＳ中类金属原子的可能分布位置、所对应的金属－类金属键数和类金属成分。建立了各种分布情况下，每个类金属原子平均所占金属－类金属键数与类金属含量的关系图。结果表明，菱面体单元结构只
有模拟和计算的方法，确认了构成金属－类金属非晶态合金的菱面体单元结构（ＲＵＳ），并根据三条原则（类金属原子首先位于大八面体中心；除大八面体中心和其棱中心处的类金属原子之间可以存在一个类金属－类金属键外，其它位置处的原子之间不允许存在类金属－类金属键；同一成分，具有多种类金属原于排列方式时，取金属－类金属键最多的情况），找出了各种ＲＵＳ中类金属原子的可能分布位置、所对应的金属－类金属键数和类金属成分。建立了各种分布情况下，每个类金属原子平均所占金属－类金属键数与类金属含量的关系图。结果表明，菱面体单元结构只
1994(4).
Abstract:
研究了９种不同加工热处理制度的Ｚｒ－１Ｎｂ合金在５００℃和６００℃、１０．３ＭＰａ蒸汽中的抗腐蚀性能，并用最小二乘法线性回归得出了５００℃蒸汽腐蚀特征值Ｋ和ｎ。结果表明；加工热处理制度对Ｚｒ－１Ｎｂ合金的高温蒸汽腐蚀性能有显著的影响，并最终归结为α－Ｚｒ中过饱和Ｎｂ含量的影响；５００℃腐蚀时可看到明显的多次转折现象，认为是腐蚀过程中新鲜氧化膜重复形成与破裂的结果；所有状态的Ｚｒ－１Ｎｂ合金在５００℃和６００℃蒸汽中实验时都没有发现不均匀疖状腐蚀发生，说明经适当加工热处理的Ｚｒ－１Ｎｂ合金有良好的抗蒸汽腐蚀
研究了９种不同加工热处理制度的Ｚｒ－１Ｎｂ合金在５００℃和６００℃、１０．３ＭＰａ蒸汽中的抗腐蚀性能，并用最小二乘法线性回归得出了５００℃蒸汽腐蚀特征值Ｋ和ｎ。结果表明；加工热处理制度对Ｚｒ－１Ｎｂ合金的高温蒸汽腐蚀性能有显著的影响，并最终归结为α－Ｚｒ中过饱和Ｎｂ含量的影响；５００℃腐蚀时可看到明显的多次转折现象，认为是腐蚀过程中新鲜氧化膜重复形成与破裂的结果；所有状态的Ｚｒ－１Ｎｂ合金在５００℃和６００℃蒸汽中实验时都没有发现不均匀疖状腐蚀发生，说明经适当加工热处理的Ｚｒ－１Ｎｂ合金有良好的抗蒸汽腐蚀
1994(4).
Abstract:
The appropriate exposure conditions were determined by testing, under there spectrometric analyses conditions, the fractional distillation and the influences of third element can be red nced maximumly . It was d iscovered in experiments that the alloy elements -Aluminium, Molybdenum-had influenced the determinations of some elements intitanium alloys. In order to reduce the influences of that, the six series standard sam pies were prepared to be used in the spectrometric determination of ten impure elements in titaniumand its alloys under the same conditions as above.
The appropriate exposure conditions were determined by testing, under there spectrometric analyses conditions, the fractional distillation and the influences of third element can be red nced maximumly . It was d iscovered in experiments that the alloy elements -Aluminium, Molybdenum-had influenced the determinations of some elements intitanium alloys. In order to reduce the influences of that, the six series standard sam pies were prepared to be used in the spectrometric determination of ten impure elements in titaniumand its alloys under the same conditions as above.
1994(4).
Abstract:
his paper presents the computer group control system which is developed with the object of the 12 sets of 600kW furnace used for 3150t extruding press of Baoji Nonferrous Metals Works. The system includes measuring the surface temperature of ingots, modifying temperature in the whole process by means of radiation and the group optimization control in the whole heating pocess by computer.
his paper presents the computer group control system which is developed with the object of the 12 sets of 600kW furnace used for 3150t extruding press of Baoji Nonferrous Metals Works. The system includes measuring the surface temperature of ingots, modifying temperature in the whole process by means of radiation and the group optimization control in the whole heating pocess by computer.
1994(4):1-6.
Abstract:
his paper presents some physicalproperties of metal materials in high strain - rates and high pressure,such as the constitutive equation and control equations at the high impact loading,the stress wave behaviour during loading and unloading, the dynamic yield and dynamic failure.The structure of the gas gun and some methods for the plate stroke wave tests are also presented in this paper.And the dynamic deformation mechanism of metal materials is discussed.
his paper presents some physicalproperties of metal materials in high strain - rates and high pressure,such as the constitutive equation and control equations at the high impact loading,the stress wave behaviour during loading and unloading, the dynamic yield and dynamic failure.The structure of the gas gun and some methods for the plate stroke wave tests are also presented in this paper.And the dynamic deformation mechanism of metal materials is discussed.
1994(4):17-25.
Abstract:
he effect of complex crystal structures on indexing single crystal SADPs has been investigated on the base of the indexing SADPs of phases in titanium alloys. According to the structure, SADPs can be indexed by one of the following three methods: I .directly indexing SADP by analyzing result according to a Brayals lattice which the structure belongs to; 2.indexing the SADP by using the result gotten according to a suitable Brayals lattice and a necessary mathematical transformation a. indexing the SADP with result calculated with a computer program which was modified according to the diffraction condition of the structure.A pure hkl method in programming for analyzing the corn plex structure is presented to make the programming easier. In the condition of presenting a structure extinction,the SADP can be indexed with the result calculated with present program used foe Brayals lattices and the program modified according to the structure simultaneously. The ideal method for indexingSADPs is a program modified according to the diffraction condition, structure extinction and double d if fraction of a complex structure.
he effect of complex crystal structures on indexing single crystal SADPs has been investigated on the base of the indexing SADPs of phases in titanium alloys. According to the structure, SADPs can be indexed by one of the following three methods: I .directly indexing SADP by analyzing result according to a Brayals lattice which the structure belongs to; 2.indexing the SADP by using the result gotten according to a suitable Brayals lattice and a necessary mathematical transformation a. indexing the SADP with result calculated with a computer program which was modified according to the diffraction condition of the structure.A pure hkl method in programming for analyzing the corn plex structure is presented to make the programming easier. In the condition of presenting a structure extinction,the SADP can be indexed with the result calculated with present program used foe Brayals lattices and the program modified according to the structure simultaneously. The ideal method for indexingSADPs is a program modified according to the diffraction condition, structure extinction and double d if fraction of a complex structure.
1994(4):26-31.
Abstract:
The relation ships among the mechan ical properties,the content of carbon elementand WC in cermets with high content of nickel havebeen studied in the paper. The relationships among corn position, dualphase zone,microstructure and mechanical properties have also beendenoted .This work procidea thoretical basis for producing high gualitycormets.
The relation ships among the mechan ical properties,the content of carbon elementand WC in cermets with high content of nickel havebeen studied in the paper. The relationships among corn position, dualphase zone,microstructure and mechanical properties have also beendenoted .This work procidea thoretical basis for producing high gualitycormets.
1994(4):32-36.
Abstract:
A laser heating pedestal growth technique has been used to grow.Single Crystal Fibers (SCF) made from RE: YAG and (Cr,RE): YAG .The technology growing the SCF qualified for good character is discussed. A simpie method of prepering source rods from powders to feed growth of the SCF is described.The absorption and fluorescence spectra of SCF have been measured.
A laser heating pedestal growth technique has been used to grow.Single Crystal Fibers (SCF) made from RE: YAG and (Cr,RE): YAG .The technology growing the SCF qualified for good character is discussed. A simpie method of prepering source rods from powders to feed growth of the SCF is described.The absorption and fluorescence spectra of SCF have been measured.
1994(4):42-45.
Abstract:
用Ｘ射线方法研究了平行于基带表面的Ｎｉ（２０Ｏ），Ｎｉ（１１１），ＮｉＯ（２００）和ＮｉＯ（１１１）晶面的取向分数Ｗ。结果表明，随预热处理温度的提高，虽然Ｗ_（ＮｉＯ（２００））也会随之提高，但是区域重加热处理对提高Ｗ_（ＮｉＯ（２００））起着最重要的作用。９００℃预热处理之后，在１１００℃进行区域重加热可使Ｗ_（ＮｉＯ（２００））提高到０．９９以上。
用Ｘ射线方法研究了平行于基带表面的Ｎｉ（２０Ｏ），Ｎｉ（１１１），ＮｉＯ（２００）和ＮｉＯ（１１１）晶面的取向分数Ｗ。结果表明，随预热处理温度的提高，虽然Ｗ_（ＮｉＯ（２００））也会随之提高，但是区域重加热处理对提高Ｗ_（ＮｉＯ（２００））起着最重要的作用。９００℃预热处理之后，在１１００℃进行区域重加热可使Ｗ_（ＮｉＯ（２００））提高到０．９９以上。
1994(4):46-51.
Abstract:
he technology of the HIP diffusion bonding of YG 15C cemented carbide to 45# carbon steel has been studied. The effects of bonding temperature. pressure time.interlayer and its thickness. residual thermal stress on bonding strength have been researched. The results show that: In the HIP diffusion bonding of YG 15C to 45# carbon steel, the bonding strength depends on bonding temperature strongly and is controlled by the residual thermal stress d ne to the therm al expansion mismatch after honding. By using N i asinterlayer, the effect of residual thermal stress on bonding can be diminished effectively sothat the bonding strength can be improved apparently.
he technology of the HIP diffusion bonding of YG 15C cemented carbide to 45# carbon steel has been studied. The effects of bonding temperature. pressure time.interlayer and its thickness. residual thermal stress on bonding strength have been researched. The results show that: In the HIP diffusion bonding of YG 15C to 45# carbon steel, the bonding strength depends on bonding temperature strongly and is controlled by the residual thermal stress d ne to the therm al expansion mismatch after honding. By using N i asinterlayer, the effect of residual thermal stress on bonding can be diminished effectively sothat the bonding strength can be improved apparently.
1994(4):52-55.
Abstract:
采用纯Ｔｉ，Ｂ，Ａｌ粉末通过真空热压反应烧结，成功地制备了原位ＴｉＢ_２增强的Ｔｉ_ｘＡｌ_ｙ金属间化合物基复合材料。结果表明，原位生长的ＴｉＢ_２多为尺寸小于０．１μｍ的块状粒子，并在基体中呈现比较明显的偏聚，粒子与基体的界面结合是良好的。
采用纯Ｔｉ，Ｂ，Ａｌ粉末通过真空热压反应烧结，成功地制备了原位ＴｉＢ_２增强的Ｔｉ_ｘＡｌ_ｙ金属间化合物基复合材料。结果表明，原位生长的ＴｉＢ_２多为尺寸小于０．１μｍ的块状粒子，并在基体中呈现比较明显的偏聚，粒子与基体的界面结合是良好的。
1994(4):56-60.
Abstract:
n this paper, low cycle fstigue property of Ti alloy TA5 was determined in a type of instron 1343 universal fatigue testing machine by using an axle strain controlled method.Strain-life relation of the material under cyclic loading was investigated, low cycle fatigue lifeof a Ti alloy was preliminarily predicted. Results show that the plastic deformation is the basic reason resulting in the fatigue damage of Ti alloy TA15. A logarithmic equation for strain-life curve of the material obtained by a test is linear equation:= 0.0288N -0.1997(wherecorrelation coefficient is 0. 9914, standand difference is 0.2153). Titanium alloy TA5 hascharacteristic of cyclic softening: low cycle fatigue fracture has obvious extrusion streak.
n this paper, low cycle fstigue property of Ti alloy TA5 was determined in a type of instron 1343 universal fatigue testing machine by using an axle strain controlled method.Strain-life relation of the material under cyclic loading was investigated, low cycle fatigue lifeof a Ti alloy was preliminarily predicted. Results show that the plastic deformation is the basic reason resulting in the fatigue damage of Ti alloy TA15. A logarithmic equation for strain-life curve of the material obtained by a test is linear equation:= 0.0288N -0.1997(wherecorrelation coefficient is 0. 9914, standand difference is 0.2153). Titanium alloy TA5 hascharacteristic of cyclic softening: low cycle fatigue fracture has obvious extrusion streak.
1994(4):61-65.
Abstract:
报导了通过相变热处理使Ｋ２ＴａＦ７晶体参数发生变化，以利于制取高纯度超细钽粉的实验依据和结果。结果表明，Ｋ２ＴａＦ７在２００～２５０℃发生可逆相变；相变后Ｋ２ＴａＦ７晶体的粒径可由原来的１３５１．８μｍ减小至７０．８μｍ，极大地提高了比表面积；相变后，杂质极大挥发，提高了Ｋ２ＴａＦ７的纯度。
报导了通过相变热处理使Ｋ２ＴａＦ７晶体参数发生变化，以利于制取高纯度超细钽粉的实验依据和结果。结果表明，Ｋ２ＴａＦ７在２００～２５０℃发生可逆相变；相变后Ｋ２ＴａＦ７晶体的粒径可由原来的１３５１．８μｍ减小至７０．８μｍ，极大地提高了比表面积；相变后，杂质极大挥发，提高了Ｋ２ＴａＦ７的纯度。
