超臨界馬氏體不銹鋼熱變形行為
發(fā)布時間:2018-10-14 19:16
【摘要】:在Gleeble-3500熱模擬試驗機上對超臨界馬氏體不銹鋼進行等溫壓縮試驗,研究其高溫流變行為,獲得超臨界馬氏體不銹鋼在溫度為900~1 150℃、變形速率為0.005~5 s~(-1)時合金的熱變形行為和組織演變。通過對實驗數(shù)據(jù)的分析、擬合建立材料的高溫流變模型,并分析Johnson-Cook(JC)模型和Arrhenius模型對超臨界馬氏體不銹鋼的適用性。研究結果表明:修正后的JC模型和Arrhenius模型具有更高的精度。在應變速率較高時,修正的JC模型的預測值更接近實驗值;在應變速率較低時,應變補償?shù)腁rrhenius模型的預測值更接近實驗值。載荷預測結果與實驗值擬合程度較好,表明建立的模型能夠描述材料的高溫流變行為。
[Abstract]:The supercritical martensitic stainless steel was subjected to isothermal compression test on a Gleeble-3500 thermal simulator. The rheological behavior of the supercritical martensitic stainless steel was studied at 900 ~ 1 150 鈩,
本文編號:2271389
[Abstract]:The supercritical martensitic stainless steel was subjected to isothermal compression test on a Gleeble-3500 thermal simulator. The rheological behavior of the supercritical martensitic stainless steel was studied at 900 ~ 1 150 鈩,
本文編號:2271389
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