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
DZ125定向凝固鎳基高溫合金組織與熔體超溫處理時間的相關(guān)性
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金項目(50931004)；國家重點基礎(chǔ)研究發(fā)展計劃項目(2006CB605202, 2010CB631202)；國家高技術(shù)研究發(fā)展計劃項目(2007AA03Z552)資助


Relationship between Microstructure and Melt Superheating Time for Directionally Solidified DZ125 Superalloys
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:

    采用熔體超溫處理方法，通過改變?nèi)垠w超溫處理時間研究定向凝固鎳基高溫合金DZ125凝固組織的演化規(guī)律。結(jié)果表明：熔體超溫處理時間由15 min延長到30 min可以細化枝晶、減小偏析。然而，進一步延長熔體超溫處理時間至60 min，枝晶卻略微粗化。熔體超溫處理15 min時，碳化物形貌為草書體，而熔體超溫處理時間大于30 min時碳化物則主要為非連續(xù)性棒狀和塊狀。造成這種現(xiàn)象的主要原因是熔體超溫處理時間的變化影響到熔體狀態(tài)，進而影響到凝固組織。

    Abstract:

    The solidification microstructure evolution of Ni-based superalloy DZ125 with melt superheating time was investigated. The results show that the dendrite arms are evidently refined and the segregation is reduced with the increase of melt superheating time when the melt superheating time is less than 30 min. However, further prolonging melt superheating time, the dendrite arms become coarser lightly. The morphology of carbide presents from script-like to blocky and nodule when the melt superheating time increases from 15 to 30 min. But when melt superheating treatment time is prolonged to 60 min, the morphology of carbide is still mainly blocky and nodule. The reason of solidification microstructure evolution is the change of melt structure with the prolonging of melt superheating time.

    參考文獻
    相似文獻
    引證文獻
引用本文

王常帥,張 軍,劉 林,傅恒志. DZ125定向凝固鎳基高溫合金組織與熔體超溫處理時間的相關(guān)性[J].稀有金屬材料與工程,2011,40(2):307~310.[Wang Changshuai, Zhang Jun, Liu Lin, Fu Hengzhi. Relationship between Microstructure and Melt Superheating Time for Directionally Solidified DZ125 Superalloys[J]. Rare Metal Materials and Engineering,2011,40(2):307~310.]
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:2010-03-25
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: