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首页> 外文期刊>Materials Science and Engineering >Mechanical properties and microstructure of a Ti-6Al-4V alloy subjected to cold rolling, asymmetric rolling and asymmetric cryorolling
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Mechanical properties and microstructure of a Ti-6Al-4V alloy subjected to cold rolling, asymmetric rolling and asymmetric cryorolling

机译:Ti-6Al-4V合金冷轧,不对称轧制和不对称冷轧的力学性能和组织

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摘要

The mechanical properties of the Ti-6Al-4V alloy are significantly determined by the process used for manufacture. In this study, the mechanical properties of the Ti-6Al-4V alloy manufactured using cold rolling, asymmetric rolling and asymmetric cryorolling were characterized by subjecting it to the tensile test and the microhardness test. The evolution in the microstructure was studied using scanning electron microscopy, transmission electron microscopy as well as energy dispersive X-ray spectrometry. Results show that the Ti-6Al-4V alloy sheets subjected to asymmetrical cryorolling with low rolling speed ratio between the upper and lower rolls have the highest tensile strength and microhardness. The tensile stress of the alloy samples after cold rolling was found to be 1008 MPa, 1046 MPa after asymmetric rolling, and 1113 MPa after asymmetric cryorolling. The highest Vickers hardness (HV395) is achieved by asymmetric cryorolling. We discuss the mechanical behavior using the criteria of grain size, size of second phase as well as dislocation density.
机译:Ti-6Al-4V合金的机械性能在很大程度上取决于制造过程。在这项研究中,通过经受拉伸试验和显微硬度试验来表征使用冷轧,不对称轧制和不对称低温轧制制造的Ti-6Al-4V合金的力学性能。使用扫描电子显微镜,透射电子显微镜以及能量色散X射线光谱法研究了微观结构的演变。结果表明,在上下辊之间的低轧制速度比下进行不对称低温轧制的Ti-6Al-4V合金板具有最高的拉伸强度和显微硬度。发现冷轧后的合金样品的拉伸应力为1008MPa,非对称轧制后为1046MPa,非对称低温轧制后为1113MPa。通过不对称的低温轧制可获得最高的维氏硬度(HV395)。我们使用晶粒尺寸,第二相尺寸以及位错密度的标准来讨论机械性能。

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  • 来源
    《Materials Science and Engineering》 |2018年第5期|10-16|共7页
  • 作者单位

    State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China,School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China,School of Metallurgy Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China,School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China;

    School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of WoUongong, NSW 2500, Australia;

    Electron Microscope Unit, University of New South Wales, Sydney, NSW 2052, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ti-6Al-4V alloy; Asymmetric rolling; Cryorolling; Mechanical property; Microstructure;

    机译:Ti-6Al-4V合金;不对称滚动;低温滚动;机械性能微观结构;

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