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首页> 外文期刊>Fusion Engineering and Design >Impact properties of electron beam welds of V-4Ti-4Cr alloys NIFS-HEAT-2 and CEA-J57
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Impact properties of electron beam welds of V-4Ti-4Cr alloys NIFS-HEAT-2 and CEA-J57

机译：V-4Ti-4Cr合金NIFS-HEAT-2和CEA-J57的电子束焊缝的冲击性能

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摘要

The Charpy impact properties and microstructure of bead-on-plate electron beam welds of V-4Ti-4Cr alloys NIFS-HEAT-2 (NH-2) and CEA-J57 (J57) were investigated. Weld metal of both grades demonstrated increase in hardness (HV_(100) ～ 180) in comparison with base metal (HV_(100) ～ 135) due to decomposition of Ti-C,O,N precipitates followed by the solid-solution hardening of V-matrix with oxygen. Hardness decreases gradually from the weld metal through the heat affected zone toward the base metal indicating partial decomposition of precipitation bands from the side of heat affected zone directly adjoining weld metal. The latter consists of columnar crystallites (grains) possessing with inner dendritic structure and elongated from the center of weld belt in the direction of heat removal. Thickness of weld metal does not exceed 1 mm while heat affected zone is about 3 mm thick. Absorbed energies of weld metal are superior in comparison with base metal for both grades (NH-2 and J57) while the fracture mode is mainly ductile in the temperature range of impact test from 17 to -196 ℃.
机译：研究了V-4Ti-4Cr合金NIFS-HEAT-2（NH-2）和CEA-J57（J57）的板焊电子束焊缝的夏比冲击性能和显微组织。与Ti（C）（100）〜135）相比，由于Ti-C，O，N析出物的分解以及固溶硬化，与母材（HV_（100）〜135）相比，这两种等级的焊接金属的硬度（HV_（100）〜180）均增加。 V型矩阵与氧气。硬度从焊接金属经过热影响区向母材逐渐降低，这表明沉淀带从直接与焊接金属相邻的热影响区一侧开始分解。后者由柱状微晶（晶粒）组成，具有内部的树枝状结构，并在排热方向上从焊带的中心拉长。焊接金属的厚度不超过1毫米，而热影响区的厚度约为3毫米。两种级别（NH-2和J57）的焊缝金属吸收能量均优于母材，而在17至-196℃的冲击试验温度范围内，断裂模式主要是延性的。

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  • 来源
    《Fusion Engineering and Design》 |2014年第8期|1633-1636|共4页
  • 作者

    Valentyn Tsisar; Takuya Nagasaka; Marion Le Flem; Olga Yeliseyeva; Juergen Konys; Takeo Muroga;

  • 作者单位

    National Institute for Fusion Science (NIFS), 322-6 Oroshi, Toki, Gifu 509-5292, Japan ,Physical-Mechanical Institute of National Academy of Sciences of Ukraine (PhMI NASU), 5 Naukova Street, 79601 Lviv, Ukraine ,Karlsruhe Institute of Technology (KIT), Institute for Applied Materials - Material Process Technology (IAM-WPT), Hermann-von-Helmholtz-Platz, 1, 76344 Eggenstein-Leopoldshafen, Germany;

    National Institute for Fusion Science (NIFS), 322-6 Oroshi, Toki, Gifu 509-5292, Japan;

    CEA, DEN, DMN, SRMA, F-91191 Gif Sur Yvette, France;

    Physical-Mechanical Institute of National Academy of Sciences of Ukraine (PhMI NASU), 5 Naukova Street, 79601 Lviv, Ukraine;

    Karlsruhe Institute of Technology (KIT), Institute for Applied Materials - Material Process Technology (IAM-WPT), Hermann-von-Helmholtz-Platz, 1, 76344 Eggenstein-Leopoldshafen, Germany;

    National Institute for Fusion Science (NIFS), 322-6 Oroshi, Toki, Gifu 509-5292, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    V-4Ti-4Cr alloy; Electron beam welding; Microstructure; Impact properties;

    机译：V-4Ti-4Cr合金;电子束焊接;微观结构冲击特性;

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