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
攪拌摩擦加工AZ31鎂合金低周疲勞性能研究
作者:
作者單位:

西安建筑科技大學 冶金工程學院

作者簡介:

通訊作者:

中圖分類號:

基金項目:


Low-cycle fatigue properties of friction stir welded joint of AZ31 magnesium alloy
Author:
Affiliation:

School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an

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:

    作為新型大塑性變形技術(shù)，攪拌摩擦焊接技術(shù)（FSW）已成功應用于超細晶材料的制備。本文采用FSW對熱軋態(tài)AZ31鎂合金進行連接，對母材和焊接接頭的低周疲勞性能進行了研究。結(jié)果表明：在疲勞測試和單軸拉伸測試過程中，焊合區(qū)和前進側(cè)熱機械影響區(qū)交界處為性能薄弱區(qū)域。FSW AZ31接頭的低周疲勞壽命，屈服強度，抗力強度以及斷后延伸率均低于母材。AZ31鎂合金疲勞測試過程種的主要變形機制為位錯滑移，疲勞斷口表面呈現(xiàn)出明顯的疲勞紋。最終，我們發(fā)現(xiàn)母材和FSW接頭低周疲勞行為符合Coffin-Manson和 Basquin關(guān)系

    Abstract:

    Friction stir welding (FSW) has been validated to be a severe plastic deformation method for development of ultrafine-grained metals. In this study, hot-rolled AZ31 magnesium alloy plate was processed by FSW, and the effect of FSW on the low-cycle fatigue (LCF) behavior of AZ31 magnesium alloy was analyzed. Results showed that the interface between the stir zone and thermo-mechanically affected zone at the advancing side is the weakest region, in which the monotonic tensile and fatigue fracture occur. Compared with the base metal (BM), the LCF fatigue life, the yield strength, the ultimate tensile strength and the elongation of FSW specimen decrease. The main deformation during LCF was dislocation slip deformation. The fracture surface exhibited a typical fatigue characteristic with the fatigue striations. Finally, we found that the LCF behavior of BM and FSW specimens can be well described by the Coffin-Manson and Basquin’s relations.

    參考文獻
    相似文獻
    引證文獻
引用本文

喬柯,王快社,王文,李天麒,王強.攪拌摩擦加工AZ31鎂合金低周疲勞性能研究[J].稀有金屬材料與工程,2019,47(3):788~796.[Ke Qiao, Kuaishe Wang, Wen Wang, Tianqi Li, Qiang Wang. Low-cycle fatigue properties of friction stir welded joint of AZ31 magnesium alloy[J]. Rare Metal Materials and Engineering,2019,47(3):788~796.]
DOI：10.12442/j. issn.1002-185X.20181140

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:2018-11-13
  • 最后修改日期:2018-12-25
  • 錄用日期:2019-01-03
  • 在線發(fā)布日期: 2019-04-10
  • 出版日期: