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properties
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  性能
    Systemically Study of Electronic Structure and Properties for Ti-Al Alloys
    Ti-Al合金电子结构和性能的系统研究
短句来源
    Effects of Cyclic Heat Treatment on Microstructures and Mechanical Properties of TiAl-based Alloy
    循环热处理对TiAl基合金组织与性能的影响
短句来源
    Study on the Physical Properties,Point Defects and Atomic Diffusion in Intermetallics by a Modified Analytic EAM Model
    金属间化合物物理性能、点缺陷及扩散的改进分析型EAM模型研究
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    Effect of Alloying, Heat Treatment and Magnetization Treatment on Microstructure and Electrochemical Properties of AB_5 Type Hydrogen Storage Electrode Alloy
    合金化、热处理及磁化处理对AB_5型贮氢电极合金微结构与电化学性能的影响
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    Composition Design and Properties of the Zr-Al-Ni-Cu Bulk Metallic Glasses
    Zr-Al-Ni-Cu大块非晶合金成分设计及性能研究
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  性能的
    Systemically Study of Electronic Structure and Properties for Ti-Al Alloys
    Ti-Al合金电子结构和性能的系统研究
短句来源
    Effects of Cyclic Heat Treatment on Microstructures and Mechanical Properties of TiAl-based Alloy
    循环热处理对TiAl基合金组织与性能的影响
短句来源
    Effect of Alloying, Heat Treatment and Magnetization Treatment on Microstructure and Electrochemical Properties of AB_5 Type Hydrogen Storage Electrode Alloy
    合金化、热处理及磁化处理对AB_5型贮氢电极合金微结构与电化学性能的影响
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    Study on Microstructures and Mechanical Properties of Heat Resistance Aluminum Alloy 2618
    2618耐热铝合金的组织与力学性能的研究
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    Effect of Microstructures on Mechanical Properties for Ti-Al-Nb Ternary Alloys
    Ti-Al-Nb三元系中的合金组织对性能的影响
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    Microstructure and Mechanical Properties of NiAl-based Eutectic Alloys and Alloying Behavior of Rare Earths
    NiAl基共晶合金的组织和力学行为及稀土合金化研究
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    Study on Corrosion Properties of Domestic X70 Pipeline Steels and Welding Joints in Medium with Hydrogen Sulfide
    国产X70管线钢及其焊接接头的硫化氢腐蚀性能研究
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    A Study on Hydrogen Storage Properties of La_2Mg_(16)Ni Modified by Ball Milling and Dynamic Process of Benzene Hydrogenation Reaction in Liquid Phase Catalyzed by La_2Mg_(16)Ni Hydride
    La_2Mg_(16)Ni储氢合金的球磨改性及其氢化物催化液相苯加氢反应动力学过程研究
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    Glass Forming Ability, Magnetic Properties and Microstructure of Nd-Al-Fe-Co Bulk Metallic Glasses
    Nd-Al-Fe-Co大块非晶的非晶形成能力、磁性和显微结构研究
短句来源
    Microstructure and Mechanical Properties of NiAl-Cr(Mo) Eutectic Alloys Processed by Various New Routes
    几种新工艺制备的NiAl-Cr(Mo)共晶合金的组织与机械性能
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  properties
They result in many nontrivial properties of quantum immanants.
      
The paper studies generic commutative and anticommutative algebras of a fixed dimension, their invariants, covariants and algebraic properties (e.g., the structure of subalgebras).
      
Whenever the action of a maximal torus on the coneCλ* has some nice properties, we obtain simple closed formulas for all weight multiplicities and theirq-analogs in the representationsVnλ,n∈?.
      
Some basic properties of the compactness propertiesCn are shown.
      
A local-global principle for finiteness properties ofS-arithmetic groups over number fields
      
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Under the conditions of basic open hearth smelting at Anshan steel works which employ scrap-ore-liquid iron charge, a statistical analysis of the production data shows that within the limit investigated the manganese content of the molten bath has no appreciable influence upon the oxygen and sulphur content of the steel. Provided that the final chemical analysis of the steel was the same, no difference in mechanical properties was observed between the products derived from the higher (>0.2% Mn) and the...

Under the conditions of basic open hearth smelting at Anshan steel works which employ scrap-ore-liquid iron charge, a statistical analysis of the production data shows that within the limit investigated the manganese content of the molten bath has no appreciable influence upon the oxygen and sulphur content of the steel. Provided that the final chemical analysis of the steel was the same, no difference in mechanical properties was observed between the products derived from the higher (>0.2% Mn) and the lower(<0.1% Mn) manganese specifications during smelting. It is concluded that for the two steels (rail steel and a low-carbon steel for seamless tube) investigated at least, there is no necessity for adhering to the specification of manganese content above a certain level(>0.15-0.2% Mn) during smelting.On the contrary, with a view to maintaining a higher manganese-containing bath, it was usually found necessary to add iron-manganese or manganese ore at the end of melting down; in doing so, the rate of carbon-removal was to a certain extent retarded, thus lengthening the period of smelting and decreasing the rate of production.The use of low manganese-containing pig-iron for the smelting of certain qualitysteels is not only feasible but also advisable from the economic point of view, provided, of course, that the sulphur content of such pig-iron can be made low to meet the necessary requirement. A review of the iron production data in certain blast furnaces at Anshan shows that this is possible, although the best conditions for producing low manganese and low sulphur pig-iron in blast furnaces deserve further a more detailed investigation.

本文结合生产研究了鞍钢碱性平爐冶炼重轨和无缝等碳素镇静钢的锰制度.研究结果指出:就上述鋼种而言,熔炼过程中的锰制度对钢中氧、硫含量以及轧制的成品質量並没有实际影响,换句话说,并没有必要规定熔池含锰量高於一定水平(>0.15—0.2%Mn).相反地,熔池含锰较高或在熔炼过程中加入锰铁均使降碳速度趋於缓慢,从而延长了熔炼时间.因此,只要高炉铁水中含硫量能够合乎规定,用低锰生铁作原料对炼钢並无害处.通过高爐生产数据分析,说明在鞍钢的操作条件下完全有可能生产含锰低而含硫合乎上述规定的铁水,应该认为用低锰生鉄冶炼重轨和无缝类型的优質鋼是切实可行的.

Experiments were carried out with the purpose of shortening the reducingperiod in small basic electric furnace for carbon steels of various carbon content.In some of the experimental heats reducing period was shortened by 20 mi-nutes and the others were made according to the normal procedure of the works.For some of the low carbon steel heats,the amount of ferro-silicon powder wasincreased by 20% and added in advance.The results,obtained from heats of shorterreducing period,show that the deoxidation and desulphurization...

Experiments were carried out with the purpose of shortening the reducingperiod in small basic electric furnace for carbon steels of various carbon content.In some of the experimental heats reducing period was shortened by 20 mi-nutes and the others were made according to the normal procedure of the works.For some of the low carbon steel heats,the amount of ferro-silicon powder wasincreased by 20% and added in advance.The results,obtained from heats of shorterreducing period,show that the deoxidation and desulphurization appear to be ascomplete as that of a normal heat,the content of nitrogen and non-metallic in-clusions being much less.In addition,the results on mechanical properties showthat in the case of medium carbon steel,the impact value is higher,and in thecase of low carbon steel the percentage of elongation and the rate of reductionof area are also slightly superior although the yield strength becomes somewhatlower.Such a shortening of reducing period also results in a 7% increase ofthe rate of production.It is suggested that in electric steel smelting process theappropriate deoxidation procedure and the length of reducing period should varyin accordance with different carbon content of the steel.A relationship of[S]/[O]=1.2—2.2 at the end of reducing period was ob-served,and the possibility of further shortening of the reducing period in makingmedium and high carbon steel was also pointed out.

在装料量为8吨的小型电炉上进行了冶炼各种碳钢的缩短还原期的研究。还原期缩短到70分钟(低碳钢冶炼中还增加矽铁粉加入量和提早加入时间)的结果是:脱氧、脱硫符合要求,钢中非金属夹杂物和氮的含量显著减少,并提高炉子生产率约7%。从而指出了以电炉冶炼碳钢时还原期的时间和脱氧制度应按钢中碳含量的不同而有所区别。并指出中、高碳钢冶炼中还原期缩短到50分钟左右的可能性。此外还观察到还原期末[S]/[O]=1.2—2.2的关系。

In order to find out the properties of Nichrome 80 Ni-20 Cr under mechanical

为了掌握X20H80电热丝材料的加工性能,曾进行了可塑性、锻造、压延、冷拔和热处理的系统研究工作,并曾于实验室内由200毫米直经的铸锭制造了1.0毫米直经的线材进行寿命测量试验。结果良好,充分证实了在实验室内求出的可塑性指标是正确的。兹将本研究的主要结果归纳如下: 1.不同的可塑性试验和实际的锻造和压延试验证实了此合金的最好热加工温度范围为1100-1300℃。在800℃与1000℃之间存在着一个较脆性的温度范围,在加工过程中,应尽量避开此较脆性的温度范围。2.在800℃与1300℃之间压延此合金的扁平试样时,变形阻力与压下率间存在着直线关系。横展量亦随压下率的增大而迅速上升。在压下率为30%以下,温度的上升提高了横展量。3.为了获得良好的成品,锻造时应采用圆角较大的锤头以消除折叠;孔型设计时应充分考虑横展量,以免产生耳子造成折叠;冷拔模子应力求光滑,润滑剂亦应保证清洁。4.冷拔时线材的退火规范,依冷拔量的不同,在900-1050℃下保温20-30分钟,均能获得良好的结果。5.此合金有良好的冷加工性能。退火后一次冷拔不发生断裂的最大加工量可达35.4%,连续冷拔可以达到90%的断面减缩率。

 
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