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吸鑄TiAl基合金鑄件內(nèi)部氣孔缺陷產(chǎn)生原因
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哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院

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TG245

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國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)51425402,51371066,51331005)


Analysis of blowhole generation reason and method of eliminate blowhole on the vacuum suction casting exhaust valve of TiAl based alloys
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School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology,School of Materials Science and Engineering,Harbin Institute of Technology

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    摘要:

    本文旨在探索底漏式真空吸鑄方法成形TiAl基合金排氣閥件過(guò)程中的氣孔缺陷的產(chǎn)生原因。通過(guò)比較不同工藝參數(shù)下吸鑄成形的TiAl基合金排氣閥內(nèi)部孔洞缺陷形貌與分布狀態(tài)，確定了缺陷的種類為氣孔。結(jié)合數(shù)值模擬計(jì)算吸鑄過(guò)程中合金熔體流動(dòng)形態(tài)的結(jié)果，得到排氣閥內(nèi)部氣孔缺陷形成的原因。通過(guò)優(yōu)化真空吸鑄過(guò)程的工藝參數(shù)，可以成功消除排氣閥鑄件內(nèi)的氣孔缺陷。

    Abstract:

    This paper aims to explore the generation mechanism of blowhole defects in TiAl based alloys exhaust valve in the process of vacuum suction casting. By comparing the morphology and distribution of void defects in TiAl based alloys exhaust valve fabricated by different process parameters, the type of void defects is identified as blowhole. Combining with numerical simulation of calculating the fluid state of the alloy melt in the suction casting process, the reason of blowhole formation is determined. By optimizing the casting parameters in the process, blowhole is eliminated ultimately.

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韓寶帥,駱良順,孟憲宇,薛祥,王亮,蘇彥慶,郭景杰.吸鑄TiAl基合金鑄件內(nèi)部氣孔缺陷產(chǎn)生原因[J].稀有金屬材料與工程,2018,47(5):1631~1636.[Han Baoshuai, Luo Liangshun, Meng Xianyu, Xue Xiang, Wang Liang, Su Yanqing, Guo Jingjie. Analysis of blowhole generation reason and method of eliminate blowhole on the vacuum suction casting exhaust valve of TiAl based alloys[J]. Rare Metal Materials and Engineering,2018,47(5):1631~1636.]
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  • 收稿日期:2016-05-04
  • 最后修改日期:2016-09-21
  • 錄用日期:2016-11-10
  • 在線發(fā)布日期: 2018-06-08
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