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   temper embrittlement 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.015秒
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temper embrittlement     
相关语句
  回火脆性
    On Temper Embrittlement of 608 Cast Steel
    608钢回火脆性的研究
短句来源
    INVESTIGATION OF TEMPER EMBRITTLEMENT IN NiCrMoV AND NiCr ROTOR STEELS( I)——EMBRITTLEMENT EQUATION AND EMBRITTLEMENT KINETICS
    NiCrMoV和NiCr转子钢回火脆性的研究(Ⅰ)——脆性方程及脆性动力学
短句来源
    Effect of Alloying Elements on Temper Embrittlement of Multicomponent Alloy Steel
    合金元素对一种多元合金钢可逆回火脆性的影响
短句来源
    Temper Embrittlement of Steels for Heavy Forging
    大型锻件用钢的回火脆性
短句来源
    Mechanism of Temper Embrittlement in 16Co14Ni10Cr2Mo Steel
    16Co14Ni10Cr2Mo钢回火脆性的研究
短句来源
更多       
  回火脆化
    STRUCTURE AND TEMPER EMBRITTLEMENT OF LARGE SECTION 5Cr2NiMoVSi HOT-WORK DIE
    5Cr2NiMoVSi大截面热作模具钢的组织及回火脆化
短句来源
    Effects of Hydrogen and Temper Embrittlement on the Local Brittle Fracture Stress of 2.25Cr-1Mo Steels
    氢与回火脆化对2.25Cr-1Mo钢局部脆断应力的影响
短句来源
    Factors Affecting the Temper Embrittlement of Normalized Steel 12CrMoV
    正火12CrlMoV钢的回火脆化及影响因素
短句来源
    Evaluation of Temper Embrittlement in Nomalized Steel 12Cr1MoV by Instrumented Charpy Impact Testing
    示波冲击试验评价正火12Cr1MoV钢回火脆化敏感性
短句来源
    COOLING RATE SENSITIVITY OF TEMPER EMBRITTLEMENT OF NORMALIZED 12Cr1MoV STEEL
    正火12Cr1MoV钢回火脆化的冷速敏感性
短句来源
更多       
  热脆性
    Genetic Programming Approach to Predicting Temper Embrittlement of Rotor Steels Using Electrochemistry Technique
    遗传规划在电化学法检测转子钢热脆性中的应用
短句来源
    The genetic programming approach was proposed to predict temper embrittlement of rotor steel(30Cr2MoV). Two independent data sets were obtained experimentally: training data and verifying data.
    在汽轮机转子钢热脆性电化学法无损检测技术的开发中,将遗传规划法应用到30Cr2MoV钢脆性转变温度预测模型的建立中,以提高其检测精度。
短句来源
  回火脆
    It is shown that in a temperature range of reversible temper embrittlement grain boundary segregation of phosphorus is reduced while that of molybdenum is enhanced with the increase of carbon content.
    研究结果表明 ,在含钼钢中提高碳含量可降低在回火脆温度范围内磷的晶界偏聚 ,增加钼的晶界偏聚。
短句来源
    Further investigation shows this phenomenon is typical reverse temper embrittlement (RTE) effect.
    实验显示服役后材料的脆化是可逆的,属于逆回火脆现象。
短句来源

 

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      temper embrittlement
    Study on temper embrittlement control technique in steel 12Cr1MoV
          
    Failure may occur catastrophically by fracture along grain boundaries when temper embrittlement induced by non-equilibrium, grain-boundary segregation (NGS) of phosphorus atoms.
          
    Temper embrittlement control technique based on the theory of NGS and deformation induced phase transformation in low-alloy steel, 12CrlMoV (which is used in steam pipeline of ships), was experimentally investigated.
          
    Temper embrittlement may be controlled and obviously improved by grain refinement.
          
    Such steel is highly resistant to temper embrittlement and will thus facilitate increased efficiency in electricity generation through the use of higher operating temperatures and improvements in design.
          
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    The rules of changes in mechanical properties of 406 steel during tempering have been studied.The fine structure of martensite and the type, morphology, distribution of carbide precipitates havebeen examined under a transmission electron microscope. The inter-relation between the mechanicalbehavior and the martensite substructure has also been studied. The results indicated that 406 steelpossesses high strength and high toughness after quenching and tempering at 300℃. The fine struc-ture is, lath martensite...

    The rules of changes in mechanical properties of 406 steel during tempering have been studied.The fine structure of martensite and the type, morphology, distribution of carbide precipitates havebeen examined under a transmission electron microscope. The inter-relation between the mechanicalbehavior and the martensite substructure has also been studied. The results indicated that 406 steelpossesses high strength and high toughness after quenching and tempering at 300℃. The fine struc-ture is, lath martensite with high dislocation density. The majority of fine needle-like precipitateswithin martentite has been indentified to be ε-carbide which is highly coherent with the matrix, byelectron diffraction pattern analysis. Thin films of 2-3% retained austenite in net form have been dis-tributed between martensite laths. This steel contains 1.5% silicon and 0.5% molybdenum, so that thestability of ε-carbide and retained austenite can be maintained to a higher temperature, thereby de-laying and retarding the embrittlement trough of tempered martensite and improving the fracture ap-pearance. In addition, the temper embrittlement at about 360-500℃ is due to the precipitation of ce-mentite in interlath surface and the segregation of impurities at grain boundaries.

    通过透射电镜观察和鉴别了406钢在回火过程中的力学性能变化规律和马氏体精细结构特征,碳化物种类、形态、分布及它们之间的关系。结果表明:406钢淬火并300℃回火后具有较高的强度和韧性,是高位错密度的板条马氏体和马氏体内大量的与基体高度共格的ε-碳化物弥散析出,及马氏体板条周围2~3%的残留奥氏体网状薄膜的贡献。同时钢中含有1.5%Si和0.5%Mo,提高了ε-碳化物和残留奥氏体的稳定性,从而推迟并减缓了马氏体回火脆性凹,改善了断裂形貌。360~500℃回火脆性是由于渗碳体在板条边界析出和杂质元素在晶界偏聚的结果。

    The secondary temper embrittlement of 608 low alloy cast steel is inves- tigated in this paper. The experimental results show that the temperature of the secondary temper embrittlement range of 608 steel is about from 450°to 700℃.The relation curve between the tempering temperature and the impact va lue is obtained. A method to evaluate the secondary temper embrittlement of 608 steel by microstractural observation is established. Auger electron spectroscopy (AES) analysis shows that the secondary...

    The secondary temper embrittlement of 608 low alloy cast steel is inves- tigated in this paper. The experimental results show that the temperature of the secondary temper embrittlement range of 608 steel is about from 450°to 700℃.The relation curve between the tempering temperature and the impact va lue is obtained. A method to evaluate the secondary temper embrittlement of 608 steel by microstractural observation is established. Auger electron spectroscopy (AES) analysis shows that the secondary temper embrittlement is caused mainly by the segregation of phosphorous, boron , etc.o at austenitic grain boundary. The existence and segregation of chromium , manganese, nickel, etc. at the austenitic grain boundary are also to increase the brittle tendency of 608 steel. Therefore, it is suggested that quenching through the brittle temperature range or adding enough molybdenum can avoid the secondary temper embrittlement of 608 cast steel.

    本文研究了608钢第二类回火脆性问题。通过实验测得该钢此类脆性的温度区段 约450—700℃.初步探索了通过显微组织鉴别回火脆性的可能性。应用俄歇电子能 谱分析初步确认:回火后缓慢冷却过程中,磷、硼等杂质元素在原奥氏体晶界层的偏 聚,是使该钢产生回火脆性的主要原因;而铬、锰、镍等合金元素的存在及于近晶界 区的偏析,也是促进回火脆化的重要因素。指出了消除该钢回火脆性的途径:当在脆 化温区回火后可施以快速水冷;可在该钢原定成分的基础上附加适量的合金元素相.

    An Auger electron spectroscopical study was made of the correlation between the temper brittleness and the grain boundary segregation of P together with alloying elements as Ni, Cr and Mn in steels 35CrMnSi and 35CrNi3 containing 450 ppm P. It was shown that the steels tested attributed substantially their temper brittleness to the P segregation along the prior austenite grain boundaries. Although in so called "ductile state", namely oil quenched at 1200℃, tempered at 625℃ for 1h and water quenched, a lot of...

    An Auger electron spectroscopical study was made of the correlation between the temper brittleness and the grain boundary segregation of P together with alloying elements as Ni, Cr and Mn in steels 35CrMnSi and 35CrNi3 containing 450 ppm P. It was shown that the steels tested attributed substantially their temper brittleness to the P segregation along the prior austenite grain boundaries. Although in so called "ductile state", namely oil quenched at 1200℃, tempered at 625℃ for 1h and water quenched, a lot of P segregated already along the grain boundary, thus, the steels embrittled markedly. After embrittlement treatment by step cooling, intergranular P concentration increased sharply. During this treatment, the increasing rate of P segregation along grain boundary in Ni-Cr steel is greater than that in Cr-Mn-Si steel. The FATT of the steels tested is directly proportional to the intergranular P content. The intergranular segregation of Ni in Ni-Cr steel is related linearly to that of P. To the steels, the addition of La may improve their temper embrittlement owing to decrease of intergranular P concentration under similar state.

    用Auger电子能谱(AES)研究了含磷450ppm的35CrMnSi和35CrNi3钢回火脆性与杂质元素磷及合金元素Ni,Cr,Mn晶界偏聚的关系。含磷钢的回火脆性主要是由磷在原奥氏体晶界偏聚所致。经1200℃油淬、625℃回火1h水冷的所谓“韧态”,磷已在晶界大量偏聚,钢已明显脆化;经阶梯冷却脆化处理后,晶界磷浓度成倍增加。在阶梯冷却脆化期间,Ni-Cr钢中磷的晶界偏聚速率比Cr-Mn-Si钢大。试验钢的FATT与晶界含磷量成正比;Ni-Cr钢中晶界Ni与磷呈线性关系。试验钢中加入La能够减少相同状态下的晶界磷浓度,从而改善钢的回火脆性。

     
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