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首页> 外文期刊>Materials Science and Engineering >Microstructure and mechanical properties of Ti-6A1-4V welds using a, near-a and a + β filler alloys
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Microstructure and mechanical properties of Ti-6A1-4V welds using a, near-a and a + β filler alloys

机译：使用a，近a和a +β填充合金的Ti-6A1-4V焊缝的组织和力学性能

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摘要

Effects of filler metal on the microstructure and mechanical properties of Ti-6A1-4V joints were investigated. Three specimens were prepared using a, near-a and a+β type filler materials and one specimen was welded without filler metal. The microstructural characterizations, hardness and tensile tests were applied to study the welded specimens. For the specimen welded without filler material, a coarse-grained structure of a + β was found in the microstructure of weld metal. Although this specimen showed lower hardness values compared to the base metal; the hardness of other weld metals was higher than that of the base material. The microstructure of other welds was a mixture of a, β and some amount of a-martensite. Both acicular and basketweave morphologies of a' were found in the weld metal. The a colonies were grown from the a lamellae which were formed at the β grain boundaries. The highest tensile strength was obtained for the specimen welded with the matching filler metal (about 91% of the base metal).%Titanium alloys; Welding; Mechanical characterization; Fracture
机译：研究了填充金属对Ti-6A1-4V接头组织和力学性能的影响。使用a，near-a和a +β型填充材料制备了三个试样，焊接了一个没有填充金属的试样。用显微组织表征，硬度和拉伸试验研究了焊接试样。对于不使用填充材料进行焊接的试样，在焊接金属的微观结构中发现了+β的粗晶粒组织。尽管该样品的硬度值比母材低。其他焊接金属的硬度高于母材。其他焊缝的显微组织是α，β和一定量的马氏体的混合物。在焊缝金属中发现了a'的针状和篮状形态。从在β晶界形成的薄片生长菌落。对于与匹配的填充金属（约91％的贱金属）焊接的样品，可获得最高的抗拉强度。焊接;机械特性断裂

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  • 来源
    《Materials Science and Engineering》 |2017年第15期|272-278|共7页
  • 作者

    K. Abbasi; B. Beidokhti; S.A. Sajjadi;

  • 作者单位

    Materials and Metallurgical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;

    Materials and Metallurgical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;

    Materials and Metallurgical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;

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  • 正文语种 eng
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  • 关键词

    Titanium alloys; Welding; Mechanical characterization; Fracture;

    机译：钛合金;焊接;机械特性断裂;

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