最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
AZ31B鎂合金水環(huán)境攪拌摩擦焊接研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金 (50774059)；教育部高等學校博士學科點科研基金 (20096120110012) 和西北工業(yè)大學凝固技術(shù)國家重點實驗室開放課題（SKLSP201009）資助


Research of Submerged Friction Stir Welded AZ31B Magnesium Alloy
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    對比研究了AZ31B鎂合金空氣環(huán)境攪拌摩擦焊接 (Friction Stir Welding, FSW) 和水環(huán)境攪拌摩擦焊接(Submerged Friction Stir Welding, SFSW) 接頭的微觀組織與力學性能。結(jié)果表明：SFSW接頭焊核區(qū)為細小等軸狀再結(jié)晶晶粒。隨著焊接速度的增大，焊核區(qū)晶粒尺寸增大，顯微硬度值降低。FSW接頭表層處的顯微組織比中心處粗大，且分布不均勻；而SFSW接頭表層處的顯微組織比中心處明顯細小。FSW接頭的表層硬度值低于中心處的硬度；而SFSW接頭的表層硬度值高于中心處的硬度。當旋轉(zhuǎn)速度為950 r·min-1、焊接速度為75 mm·min-1時，SFSW接頭的抗拉強度值達到最大，為母材強度的72 %，拉伸斷口表現(xiàn)為解理斷裂特征

    Abstract:

    AZ31B magnesium alloy was joined by friction stir welding (FSW) and submerged friction stir welding (SFSW), respectively, and the microstructure and mechanical properties of the joints were investigated. The experimental results show that the nugget zone in SFSW joint is characterized by fine and equiaxed recrystallized grains. Increasing of the travel speed will induce an increase in grain size and a decrease in microhardness in the nugget zone. The microstructure of the FSW joint on the surface is coarser and more inhomogeneous than that in the center, while the microstructure of the SFSW joint on the surface is obviously finer than that in the center. The microhardness of the FSW joint on the surface is lower than that in the center, while the SFSW joint has the opposite trend. When the rotation speed is 950 r·min-1 and the travel speed is 75 mm·min-1, the maximum ultimate tensile strength of the SFSW joint reaches 72% that of the base material. The fracture surface of the SFSW joints exhibits cleavage-like feature

    參考文獻
    相似文獻
    引證文獻
引用本文

王快社,周龍海,武佳蕾,王 文. AZ31B鎂合金水環(huán)境攪拌摩擦焊接研究[J].稀有金屬材料與工程,2012,41(6):1111~1115.[Wang Kuaishe, Zhou Longhai, Wu Jialei, Wang Wen. Research of Submerged Friction Stir Welded AZ31B Magnesium Alloy[J]. Rare Metal Materials and Engineering,2012,41(6):1111~1115.]
DOI：[doi]

復制
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2011-06-05
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: