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Effects of heat input on tensile properties and fracture behavior of friction stir welded Mg-3Al-1Zn alloy

机译：热量输入对搅拌摩擦焊接Mg-3Al-1Zn合金拉伸性能和断裂行为的影响

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摘要

6.3 mm thick Mg-3Al-1Zn plates were friction stir welded with different shoulder dimensions at a traverse speed of100 mm/min and a rotation rate of 800 rpm. With increasing the heat input by enlarging the shoulder diameter from 18 to 24 mm, the tensile strength of the welds tended to increase and the elongation was significantly improved, and the facture location shifted from the thermomechanically affected zone (TMAZ) in the advancing side to the stir zone. The highest ultimate tensile strength of the welds was obtained by using the shoulder 24 mm in diameter and reached up to 86% of the base material. The variation in the mechanical properties and fracture location was mainly attributed to the texture change in the TMAZ. However, the hardness profiles of the welds were hardly influenced by the shoulder size.
机译：6.3毫米厚的Mg-3Al-1Zn板在100毫米/分钟的横向速度和800 rpm的旋转速度下以不同的肩部尺寸进行摩擦搅拌焊接。随着通过将肩部直径从18 mm增大到24 mm来增加热量输入，焊缝的抗拉强度趋于增加并且伸长率得到显着改善，并且断裂位置从前进侧的热机械影响区（TMAZ）转移到搅拌区。使用直径为24 mm的肩部可获得最高的焊接极限抗拉强度，最高可达基础材料的86％。力学性能和断裂位置的变化主要归因于TMAZ中的织构变化。但是，焊缝的硬度曲线几乎不受肩宽的影响。

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  • 来源
    《Materials Science and Engineering》 |2010年第3期|708-714|共7页
  • 作者

    J. Yang; B.L. Xiao; D. Wang; Z.Y. Ma;

  • 作者单位

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

    Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;

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

    friction stir welding; magnesium; texture; properties; fracture;

    机译：搅拌摩擦焊;镁;质地;属性断裂;

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