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TiAl基合金葉片吸鑄成形缺陷的數(shù)值模擬
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國家自然科學(xué)基金(50975060，50271020，50771041)，新世紀(jì)優(yōu)秀人才支持計劃(NCET-05-0350)；哈爾濱工業(yè)大學(xué)優(yōu)秀團隊支持計劃


Numerical Simulation on Suction Casting Defects of TiAl Based Alloy Blade
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    摘要:

    采用有限元軟件ProCAST模擬TiAl基合金液在金屬型真空吸鑄成形鑄造工藝中的充型凝固過程，分析在充型凝固過程中產(chǎn)生缺陷的原因，并進行了相關(guān)的實驗驗證。在模擬過程中發(fā)現(xiàn)鑄件中確實存在模擬預(yù)測的缺陷，且缺陷主要集中在葉片隼部，在葉身部位出現(xiàn)少量的縮松缺陷，模擬和實際相吻合。

    Abstract:

    The filling process and solidification of TiAl based alloy blade by suction casting was studied via numerical simulation. The shrinkage defect of TiAl based alloy blade casting was predicted using FEM software ProCAST. The results indicate the cold shut will be decreased with the increase of graphite suction opening diameter and the pouring temperature. With the decrease of the coefficient of heat transfer, the cold shut is reduced. The TiAl blades are obtained by this method. The simulated result tallies well with the actual cast experiment, and lays down a foundation for improving the cast technology of the TiAl based alloy casting.

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葉喜蔥,蘇彥慶,郭景杰,張月紅,傅恒志. TiAl基合金葉片吸鑄成形缺陷的數(shù)值模擬[J].稀有金屬材料與工程,2011,40(2):247~250.[Ye Xicong, Su Yanqing, Guo Jingjie, Zhang Yuehong, Fu Hengzhi. Numerical Simulation on Suction Casting Defects of TiAl Based Alloy Blade[J]. Rare Metal Materials and Engineering,2011,40(2):247~250.]
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  • 收稿日期:2010-03-10
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