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TC11鈦合金熱變形本構(gòu)方程的建立
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黑龍江省科學(xué)基金(E201107)


Establishment of Constitutive Equations of TC11 Alloy during Hot Deformation
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    摘要:

    利用Gleeble-1500D熱模擬試驗機(jī)，在變形溫度為960~1050 ℃，應(yīng)變速率為0.01~10 s-1范圍內(nèi)對TC11鈦合金進(jìn)行等溫恒應(yīng)變速率壓縮實驗。通過真應(yīng)力-真應(yīng)變曲線，分析了變形溫度和應(yīng)變速率對流變應(yīng)力的影響規(guī)律，并在Arrhenius雙曲正弦型方程的基礎(chǔ)上建立了適用于TC11鈦合金熱變形的本構(gòu)方程。誤差分析表明所建立的本構(gòu)方程與實驗值吻合較好，為制定TC11鈦合金鍛造工藝提供了理論依據(jù)

    Abstract:

    Isothermal compression of the TC11 titanium alloy was conducted on a Gleebe-1500D hot-simulator at the deformation temperature ranging from 960 to 1050 °C and the strain rate ranging from 0.01 to 10 s-1. The influence of deformation temperature and strain rate on the stress was studied according to true stress-true strain curves, and the constitutive equations of TC11 titanium alloy during hot deformation were established based on hyperbolic sine equations of Arrhenius type. Error analyses show that the established constitutive equations are coincident with experimental data well, and they provide a theory basis for the forging technique of TC11 titanium alloy

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張雪敏,曹福洋,岳紅彥,馮義成,郭二軍,康福偉. TC11鈦合金熱變形本構(gòu)方程的建立[J].稀有金屬材料與工程,2013,42(5):937~941.[Zhang Xuemin, Cao Fuyang, Yue Hongyan, Feng Yicheng, Guo Erjun, Kang Fuwei. Establishment of Constitutive Equations of TC11 Alloy during Hot Deformation[J]. Rare Metal Materials and Engineering,2013,42(5):937~941.]
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  • 收稿日期:2012-05-18
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