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Effect of Heat Treatment on Microstructure and Properties of as-Forged TiAl Alloy with β Phase
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Effect of Heat Treatment on Microstructure and Properties of as-Forged TiAl Alloy with β Phase
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Project Supported by State Key Lab of Advanced Metals and Material

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    摘要:

    采用包套鍛造技術(shù)成功制備Ti-45Al-5.4V-3.6Nb-0.3Y合金鍛餅，并研究熱處理對(duì)該合金鍛餅組織和性能的影響。通過熱處理得到3種不同的組織形態(tài)，分別為雙態(tài)、近層片、和全層片組織，分析熱處理過程中合金組織的演變規(guī)律，并對(duì)不同組織形態(tài)的合金進(jìn)行力學(xué)性能測(cè)試。結(jié)果發(fā)現(xiàn)，雙態(tài)組織的合金具有最好的室溫塑性，其值可達(dá)1.35%，近層片組織的合金具有較高的室溫強(qiáng)度，屈服強(qiáng)度為605.31 MPa，斷裂強(qiáng)度為665.75 MPa

    Abstract:

    The canned forging pancake of Ti-45Al-5.4V-3.6Nb-0.3Y alloy was prepared, and the microstructure control and properties for various microstructures of as-forged alloy were studied. Three different microstructures, duplex, nearly lamellar and fully lamellar, were obtained through heat treatments. The microstructure evolution was analyzed and tensile properties were measured. The results show that the treated sample with duplex microstructure exhibits the best ductility, and its elongation reaches 1.35%; the alloy with nearly lamellar microstructure has better strength, i.e.yield strength and fracture strength are 605.31 MPa and 665.75 MPa at room temperature, respectively

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楊 非,孔凡濤,陳玉勇,肖樹龍. Effect of Heat Treatment on Microstructure and Properties of as-Forged TiAl Alloy with β Phase[J].稀有金屬材料與工程,2011,40(9):1505~1509.[Yang Fei, Kong Fantao, Chen Yuyong, Xiao Shulong. Effect of Heat Treatment on Microstructure and Properties of as-Forged TiAl Alloy with β Phase[J]. Rare Metal Materials and Engineering,2011,40(9):1505~1509.]
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  • 收稿日期:2010-09-22
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