新聞資訊
TC18鈦合金盤件等溫模鍛過程有限元模擬及試驗
發(fā)布人：上海艾荔艾金屬材料有限公司www.bt990.com.cn
更新時間：2015-08-26
通過熱模擬試驗建立TC18合金的Arrhenius型本構(gòu)關(guān)系，采用有限元模擬方法系統(tǒng)研究變形溫度、變形速率和摩擦因數(shù)等因素對TC18縮比盤件等溫模鍛過程的影響，從而得到該合金較合理的模鍛工藝條件，并用于指導(dǎo)具體試驗。
TC18鈦合金盤件等溫模鍛過程有限元模擬及試驗Finite element simulation and experiment of isothermal die
forging process of TC18 Ti alloy disc
通過熱模擬試驗建立TC18合金的Arrhenius型本構(gòu)關(guān)系，采用有限元模擬方法系統(tǒng)研究變形溫度、變形速率和摩擦因數(shù)等因素對TC18縮比盤件等溫模鍛過程的影響，從而得到該合金較合理的模鍛工藝條件，并用于指導(dǎo)具體試驗。結(jié)果表明：變形溫度840
℃、變形速率0.1
mm/s、摩擦因數(shù)0.03為該合金較合理的等溫模鍛變形條件；在有限元模擬工藝的指導(dǎo)下成功鍛造出該合金盤件，并驗證有限元模擬結(jié)果的正確性；同時，為其他鈦合金復(fù)雜件的等溫模鍛工藝提供數(shù)值依據(jù)與技術(shù)指導(dǎo)。
Arrhenius constitutive relationship of TC18 Ti alloy
obtained from thermal simulation test was used to simulate the isothermal die
forging of reduced-scale TC18 disc by finite element method. The suitable
deformation conditions were obtained and applied to guide the experiment through
systemically investigating the influence of deformation temperature, rate and
friction factor on the isothermal die forging process. The result show that the
suitable isothermal die forging conditions are that the temperature is 840 ℃,
rate is 0.1 mm/s and friction factor is 0.03. The TC18 Ti disc is successfully
fabricated under the guidance of finite element simulation, while the accuracy
of simulation is also verified by the forging experiment. The related
investigation can provide the numerical and technological support for other
complex components.