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
橫向預壓縮對<001>取向鎳基單晶高溫合金蠕變性能的影響
DOI:
作者:
作者單位:

1.沈陽化工大學;2.沈陽工業(yè)大學材料科學與工程學院;3.沈陽工業(yè)大學;4.北京航空材料研究院

作者簡介:

通訊作者:

中圖分類號:

TG132.3

基金項目:

國家自然科學基金項目（面上項目，重點項目，重大項目）


Effect of Transverse Pre-Compression on High-Temperature Creep Behavior of <001> Oriented Single Crystal Nickel-Based Superalloy
Author:
Affiliation:

1.School of Energy and Power Engineering, Shenyang University of Chemical Technology;2.School of Materials Science and Engineering, Shenyang University of Technology;3.Beijing Institute of Aeronautical Materials

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:

    通過蠕變性能測試及組織形貌觀察，研究了預壓縮對某[001]取向鎳基單晶高溫合金蠕變性能的影響。結(jié)果表明，[001]取向鎳基單晶高溫合金在1040 ℃/180 MPa條件下沿[100]方向預壓縮40 h后，立方g?相轉(zhuǎn)化為一維的平行于壓應力軸的P型纖維狀筏狀組織。合金晶向及預壓縮和拉伸蠕變應力軸取向誤差是預壓縮合金內(nèi)纖維狀g?相發(fā)生橫向連接的原因。合金在預壓縮及后續(xù)拉伸蠕變過程中g(shù)?g相界面能的降低是g?相發(fā)生組織演化的驅(qū)動力。相對于未預壓縮合金，預壓縮后合金的微觀組織結(jié)構(gòu)使位錯更容易在基體通道中滑移，其對合金沿[001]方向的應變率貢獻更大，因此預壓縮降低了合金在980 ℃/200 MPa條件下的蠕變抗力。

    Abstract:

    By means of creep tests and microstructure observations, the effect of transverse pre-compression on high-temperature creep behavior of a [001] oriented single crystal nickel-based superalloy was studied. Results show that after being pre-compressed along [100] orientation at 1040 篊/180MPa for 40 h, the cuboidal g?phase has been transformed into one-dimensional P-type stripe-like rafts parallel to the compressive stress axis. The misorientations of the alloy and stress axis of pre-compression and tensile creep are responsible for the transverse connection of the stripe-like g?rafts. The decrease of the interfacial energy of g?g phases is the driving force of the microstructure evolution during the pre-compression treatment and the subsequent tensile creep test of the alloy. Compared to the alloy without pre-compression, the microstructure of the pre-compressed alloy makes the dislocation slip in matrix channels more easily, which has more contributions to the strain rate of the alloy along [001] orientation, so the pre-compression decreases the creep resistance of the alloy at 980 篊/200 MPa.

    參考文獻
    相似文獻
    引證文獻
引用本文

蘇勇,田素貴,張順科,于莉麗,于慧臣.橫向預壓縮對<001>取向鎳基單晶高溫合金蠕變性能的影響[J].稀有金屬材料與工程,2016,45(1):79~85.[suyong, Tian Sugui, Zhang Shunke, Yu Lili, Yu Huichen. Effect of Transverse Pre-Compression on High-Temperature Creep Behavior of <001> Oriented Single Crystal Nickel-Based Superalloy[J]. Rare Metal Materials and Engineering,2016,45(1):79~85.]
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:2014-03-03
  • 最后修改日期:2014-10-16
  • 錄用日期:2014-11-20
  • 在線發(fā)布日期: 2019-01-04
  • 出版日期: