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γ-TiA1/TC4復(fù)合板材的制備及組織性能研究
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Preparation of γ-TiAl/TC4 Composite Sheet and Its Microstructure and Properties
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    摘要:

    提出了制備γ-TiAl/Ti合金復(fù)合板材的技術(shù)思想。采用包套軋制技術(shù)在1150 ℃軋制出厚度為3 mm的Ti-43Al- 9V-0.3Y/Ti-6Al-4V復(fù)合板材，其中Ti-43Al-9V-0.3Y合金層的厚度約為2.3 mm，Ti-6Al-4V合金層的厚度約為0.7 mm。復(fù)合板材的總變形量為80%。包套軋制后板材外形完整、無應(yīng)力開裂。分析表明，復(fù)合板材的界面相主要由α2-Ti3Al構(gòu)成。拉伸性能測試結(jié)果表明，隨著Ti-6Al-4V合金層厚度的增加，復(fù)合板材室溫下的抗拉強度、延伸率都得到了顯著的提高。

    Abstract:

    A new technique idea of γ-TiAl/Ti alloy composite sheet preparation was presented. Ti-43Al-9V-0.3Y/Ti-6Al-4V composite thin sheet with 3 mm thickness was produced by clad rolling technology at 1150 °C with 80 % total deformation amount. The thickness of Ti-43Al-9V-0.3Y alloy and Ti-6Al-4V alloy is about 2.3 mm and 0.7 mm in the composite sheet, respectively. The composite sheet after clad rolling has intact shape without stress cracking. Analyses show that the interface phases of the composite sheet are mainly composed of α2-Ti3Al. Tensile test reveals that, with increase of Ti-6Al-4V thickness, both the tensile strength and elongation are obviously increased at room temperature. When the thickness of the Ti-6Al-4V layer reaches up to 0.7 mm (the total thickness is 2 mm), the tensile strength and elongation of the composite sheet exceed 800 MPa and 4% at room temperature, respectively. And elongation of the composite sheet exceeds 25% at 700 ℃.

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孔凡濤,陳玉勇.γ-TiA1/TC4復(fù)合板材的制備及組織性能研究[J].稀有金屬材料與工程,2009,38(8):1484~1486.[Kong Fantao, Chen Yuyong. Preparation of γ-TiAl/TC4 Composite Sheet and Its Microstructure and Properties[J]. Rare Metal Materials and Engineering,2009,38(8):1484~1486.]
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  • 收稿日期:2008-07-26
  • 最后修改日期:2009-05-07
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