超臨界馬氏體不銹鋼熱變形行為
發(fā)布時(shí)間:2018-10-14 19:16
【摘要】:在Gleeble-3500熱模擬試驗(yàn)機(jī)上對(duì)超臨界馬氏體不銹鋼進(jìn)行等溫壓縮試驗(yàn),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(shí)合金的熱變形行為和組織演變。通過對(duì)實(shí)驗(yàn)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(duì)超臨界馬氏體不銹鋼的適用性。研究結(jié)果表明:修正后的JC模型和Arrhenius模型具有更高的精度。在應(yīng)變速率較高時(shí),修正的JC模型的預(yù)測值更接近實(shí)驗(yàn)值;在應(yīng)變速率較低時(shí),應(yīng)變補(bǔ)償?shù)腁rrhenius模型的預(yù)測值更接近實(shí)驗(yàn)值。載荷預(yù)測結(jié)果與實(shí)驗(yàn)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(hào):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(hào):2271389
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