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超塑性研究     
相关语句
  study of superplasticity
     A Study of Superplasticity of Superhard Aluminium Alloy LC9
     超硬铝LC9合金的超塑性研究
短句来源
     Study of Superplasticity in As rolled TiAl Based Intermetallic
     热轧态TiAl基金属间化合物超塑性研究
短句来源
     The progress in the study of superplaSticity in TiAl intermetallic com-pound is summarized and evaluated.
     总结和评价了TiAl金属间化合物超塑性研究的进展情况。
短句来源
     The properties and applications of Ti-15-3 alloy have been reviewed briefly, and the progress in the study of superplasticity of solute treated, hot rolled and cold rolled Ti-15-3 alloy is summarized and evaluated.
     本文介绍了Ti-15-3合金的性能特点和应用,总结和评价了固溶态、热轧态和冷轧态Ti-15-3合金超塑性研究的进展情况。
短句来源
     THE STUDY OF SUPERPLASTICITY OF SiCp/2024Al COMPOSITES
     碳化硅颗粒增强LY_(12)铝合金复合材料超塑性研究
短句来源
  research on superplasticity
     Research on superplasticity of silicon nitride ceramic
     氮化硅陶瓷超塑性研究
短句来源
     Research on Superplasticity of Ti-10V-2Fe-3Al Alloy
     Ti-10V-2Fe-3Al合金超塑性研究
短句来源
     Research on Superplasticity of LD10 Alloy and Ti-10V-2Fe-3Al Powder Alloy
     LD10铝合金及Ti-1023粉末钛合金的超塑性研究
短句来源
     Research on Superplasticity of ZnAl27 Alloy
     ZnA127合金超塑性研究
短句来源
     RESEARCH ON SUPERPLASTICITY IN SiCp/2024Al AND SiCp/8090Al-Li COMPOSITES
     铝合金和铝锂合金基复合材料的超塑性研究
  superplastic study
     LD7 Aluminium Alloy Superplastic Study
     缎铝LD7超塑性研究
短句来源
     HPb59-1 Lead-brass Superplastic Study
     HPb59-1铅黄铜超塑性研究
短句来源
  a study on superplasticity
     A STUDY ON SUPERPLASTICITY OF Al-Li-Cu-Mg-Zr ALLOY
     Al-Li-Cu-Mg-Zr合金的超塑性研究
短句来源
     A Study on Superplasticity of Ti-Co(Ni)-Al Alloys
     Ti-Co(Ni)-Al系合金的超塑性研究
短句来源

 

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      study of superplasticity
    A metallographic study of superplasticity in a micrograin aluminium bronze
          
    A study of superplasticity in a modified 5083 Al-Mg-Mn alloy
          


    This paper analyses theoretically the relationship between the crosshead speed and the true strain rate in tensile test, thereby, suggests a testing method realizing the constant strain rate on a common tensile machine for investigating superplasticity of metals.

    本文从理论上分析了拉伸试验中真应变速率与夹头移动速率之间的关系,提出一种在普通拉伸试验机上实现恒应变速率变形进行超塑性研究的方法.

    n this paper, the superplasticity of a zinc base alloy containing fine dispersoid particles of intermetallic compounds has been investigated. After a special thermomechanical treatment, the chill cast slab of a Zn-0.66%Cu0.38% Mn alloy was converted into fine-grained sheets in which the average grain diameter was <10 μm. In the temperature range from 250℃ to 300℃ with the initial strain rates from 4×10~(-3)s~(-1) to 3×10~(-4)s~(-1), this alloy exhibits typical superplastic mechanical behavior. The m value and...

    n this paper, the superplasticity of a zinc base alloy containing fine dispersoid particles of intermetallic compounds has been investigated. After a special thermomechanical treatment, the chill cast slab of a Zn-0.66%Cu0.38% Mn alloy was converted into fine-grained sheets in which the average grain diameter was <10 μm. In the temperature range from 250℃ to 300℃ with the initial strain rates from 4×10~(-3)s~(-1) to 3×10~(-4)s~(-1), this alloy exhibits typical superplastic mechanical behavior. The m value and the fracture elongation in region Ⅱ are about 0.49 and 300% respectively. At 250℃, a relation of ∞σ~2/d~2 was observed. The activation energy for superplastic flow of this alloy measured under constant stress condition in the temperature range of 250℃~300℃ is 54.2+5.6kJ/mol which is comparable to the activation energy for grain boundary diffusion in pure zinc. This demonstrates that the strain rate of superplastic flow of the alloy is controlled by the grain boundary self-diffusion.

    本文对一种在固溶体基体上分布有弥散化合物微粒的锌基合金进行了超塑性研究。急冷凝固的Zn-0.66%Cu-0.38%Mn合金经晶粒微细化处理后获得了晶粒平均直径小于10μm的微细晶粒组织。在250~300℃和3×10~(-4)~4×10~(-3)s~(-1)的初始应变速率拉伸条件下,此合金呈现出典型的超塑变彤力学特征。Ⅱ区内的m值约为0.49,延伸率约为300%。250℃时应变速率、流变应力σ及平均晶粒直径d之间符合ocσ~2/d~2关系。在250~300℃温度范围和恒定应力条件下测得此合金的超塑变形激活能为54.2±5.6kJ/mol,与纯锌的晶界自扩散激活能很接近,说明此合金的超塑变形是由晶界自扩散所控制的。

    This paper introduces the advances in research of superplasticity and the most important achievements in technology and theory.Three important dire- ctions for future investigation in superplasticity are proposed.A feasibility of the “micro-multiplicity effect” for superplastic deformation and a research on mechanism according to the number and different strengths of the phases in alloys are also proposed.

    本文介绍了超塑性研究的进展和在工艺与理论上取得的重要成果。对超塑性研究指出三个重要方向。对超塑性变形提出“显微多重效应”的可能性和合金按相数和两相强度分类进行机理研究。

     
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