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
90W-7Ni-3Fe合金拉伸力學(xué)行為的應(yīng)變率效應(yīng)
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:


Effect of Loading Strain Rate on Tensile Behavior of 90W-7Ni-3Fe Alloy
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 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CMT4105拉伸試驗(yàn)機(jī)對燒結(jié)態(tài)90W-7Ni-3Fe (90W)合金進(jìn)行準(zhǔn)靜態(tài)拉伸試驗(yàn)；在較高應(yīng)變率條件（1600~2000 s-1）下，采用套筒加載直拉式Hopkinson拉桿對90W合金進(jìn)行動態(tài)拉伸試驗(yàn)，研究90W合金在不同加載應(yīng)變率下的拉伸性能及破壞機(jī)制。結(jié)果表明，在拉伸加載條件下，90W合金具有明顯的應(yīng)變率效應(yīng)，隨著應(yīng)變率的增加，強(qiáng)度顯著提高，材料斷裂時(shí)的真實(shí)應(yīng)變下降，斷裂前吸收的總能量下降。90W合金的破壞機(jī)制由鎢-鎢界面開裂向鎢顆粒解理斷裂轉(zhuǎn)變。

    Abstract:

    The quasi-static tensile properties and dynamic tensile properties of as-sintered 90W-7Ni-3Fe (90W) alloy were studied. Quasi-static tensile tests were carried out by a CMT4105 tensile machine at the strain rate of 0.001 s-1, while dynamic tensile tests were carried out by Split Hopkinson Tensile Bar (SHTB) within a higher strain rate range of 1600~2000 s-1. The tensile properties and failure mechanism of 90W alloy at different strain rates were investigated. Results show that under the condition of tensile loading, 90W alloy exhibits an obvious strain rate effect. With the increasing of strain rate, the tensile strength increases obviously, while the critical true strain for fracture and the total energy absorbed by 90W alloy show a decreasing tendency. The failure mechanism of 90W alloy converts from the abruption of W-W boundaries to the cleavage of tungsten grains.

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

郭文啟,劉金旭,呂翠翠,李樹奎.90W-7Ni-3Fe合金拉伸力學(xué)行為的應(yīng)變率效應(yīng)[J].稀有金屬材料與工程,2013,42(4):793~796.[Guo Wenqi, Liu Jinxu, Lü Cuicui, Li Shukui. Effect of Loading Strain Rate on Tensile Behavior of 90W-7Ni-3Fe Alloy[J]. Rare Metal Materials and Engineering,2013,42(4):793~796.]
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:2012-04-28
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: