2CuLi)相和q￠ (Al2Cu)相完全溶解,而熱機(jī)影響區(qū)所有q￠相及大部分T1相溶解。另外,在焊核心區(qū)形成較多位錯。"/>

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
2195-T8鋁鋰合金板材摩擦攪拌焊接頭組織與力學(xué)性能
DOI:
作者:
作者單位:

中南大學(xué)材料科學(xué)與工程學(xué)院,航天材料及工藝研究所,航天材料及工藝研究所,中南大學(xué)材料科學(xué)與工程學(xué)院

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

國家高技術(shù)研究發(fā)展計劃（863計劃）


Mechanical Property and Structures of Friction-Stir Weld Joint of 2195-T8 Al-Li Alloy Plate
Author:
Affiliation:

School of Materials Science and Engineering,Central South University,Aerospace Research Institute of Materials and Processing Technology,Aerospace Research Institute of Materials and Processing Technology,School of Materials Science and Engineering,Central South University

Fund Project:

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

    采用圓柱狀攪拌針及帶螺紋圓柱狀攪拌針,進(jìn)行了5 mm厚度2195-T8鋁鋰合金板材的摩擦攪拌焊接,研究了旋轉(zhuǎn)速度及焊接速度對接頭拉伸性能的影響,并檢測了接頭組織。采用圓柱狀攪拌針(旋轉(zhuǎn)速度1000 r/min)進(jìn)行焊接,當(dāng)焊接速度不當(dāng)時,產(chǎn)生貫穿焊縫的連續(xù)孔洞,導(dǎo)致接頭強(qiáng)度較低。采用帶螺紋圓柱狀攪拌針進(jìn)行焊接(焊接速度120 mm/min)時,可消除上述孔洞缺陷,且隨旋轉(zhuǎn)速度由700 r/min增加至1100 r/min,接頭強(qiáng)度增加。焊核區(qū)晶粒發(fā)生再結(jié)晶,但晶粒尺寸分布不均勻；從焊核區(qū)頂部至底部,晶粒尺寸降低；緊鄰熱機(jī)影響區(qū)的焊核區(qū)晶粒尺寸小于中心焊核區(qū)。焊核區(qū)T1 (Al2CuLi)相和q￠ (Al2Cu)相完全溶解,而熱機(jī)影響區(qū)所有q￠相及大部分T1相溶解。另外,在焊核心區(qū)形成較多位錯。

    Abstract:

    The tensile properties of friction stir weld (FSW) joint of 2195-T8 Al-Li alloy plate with 5 mm thickness prepared by straight cylindrical pin and threaded cylindrical pin at different rotational speed and welding speed were investigated. The structures of the FSW joint were detected. As prepared by straight cylindrical pin at improper welding speed, continuous hole was formed in the FSW joint along the welding direction, leading to lower joint strength. Threaded cylindrical pin alleviated the formation of hole in the weld, and the joint strength was increased with the rotational speed increasing from 700 r/min to 1100 r/min. The grains in the nugget zone (NZ) were recrystallized, and their size was decreased along the direction from the top to the bottom. Meanwhile, the grain size in the NZ adjacent to the thermo-mechanically affect zone (TMAZ) was smaller than that in the central NZ. The precipitates of T1 (Al2CuLi) and q￠ (Al2Cu) in the NZ were completely dissolved. All q￠ precipitates but most T1 precipitates were dissolved in the TMAZ. Meanwhile, dislocations were formed in the NZ.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

李勁風(fēng),陳永來,張緒虎,鄭子樵.2195-T8鋁鋰合金板材摩擦攪拌焊接頭組織與力學(xué)性能[J].稀有金屬材料與工程,2018,47(3):780~787.[Li Jin-feng, Chen Yong-lai, Zhang Xu-hu, Zheng Zi-qiao. Mechanical Property and Structures of Friction-Stir Weld Joint of 2195-T8 Al-Li Alloy Plate[J]. Rare Metal Materials and Engineering,2018,47(3):780~787.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點(diǎn)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:2016-03-31
  • 最后修改日期:2016-06-17
  • 錄用日期:2016-07-15
  • 在線發(fā)布日期: 2018-04-11
  • 出版日期: