發(fā)布時間：2018-07-04 09:17

  本文選題：TWIP鋼 + 層錯能��； 參考：《鋼鐵研究學(xué)報》2015年01期

【摘要】：高錳TWIP鋼的高強(qiáng)度、高塑性和高能量吸收能力與其堆垛層錯能有關(guān)。TWIP效應(yīng)對應(yīng)的層錯能上、下限值仍未統(tǒng)一,尤其是TWIP向MBIP(微帶誘導(dǎo)塑性)轉(zhuǎn)變的臨界判據(jù)仍有待于深入分析。XRD、TEM和EAM是測定奧氏體層錯能最常用的實(shí)驗(yàn)方法。同一TWIP鋼的層錯能及其變化規(guī)律存在實(shí)驗(yàn)方法的相關(guān)性。正規(guī)和亞正規(guī)溶液模型、Bragg-Williams模型和雙亞點(diǎn)陣模型是計(jì)算高錳鋼層錯能的常見模型。對同一TWIP鋼來說,不同模型的預(yù)測值并不相同,且與實(shí)測值也存在差異。鈴木效應(yīng)引起層錯能隨間隙原子濃度非線性變化,這在計(jì)算時是不能忽略的。規(guī)范實(shí)驗(yàn)方法、提高設(shè)備精度和完善熱力學(xué)模型及其數(shù)據(jù)庫有助于獲得準(zhǔn)確可靠的層錯能值。
[Abstract]:The high strength, high plasticity and high energy absorption capacity of high manganese TWIP steel are related to the stacking fault energy. Especially, the critical criterion of TWIP to MBIP (microstrip induced plasticity) still needs to be further analyzed. XRDX TEM and EAM are the most commonly used experimental methods to measure the stacking fault energy of austenite. The stacking fault energy and its variation law of the same TWIP steel are correlated with experimental methods. Normal and subnormal solution models Bragg-Williams model and double sub-lattice model are common models for calculating stacking fault energy of high manganese steel. For the same TWIP steel, the predicted values of different models are different, and there are also differences between the predicted values and the measured values. The stacking fault energy caused by the Suzuki effect is nonlinear with the concentration of the interstitial atoms, which can not be ignored in the calculation. Standardizing the experimental method, improving the precision of the equipment and perfecting the thermodynamic model and its database are helpful to obtain accurate and reliable stacking fault energy.
【作者單位】： 北京科技大學(xué)鋼鐵冶金新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室;北京科技大學(xué)冶金與生態(tài)工程學(xué)院;
【基金】：北京科技大學(xué)鋼鐵冶金新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室的資助項(xiàng)目(編號41603013)
【分類號】：TG142.1

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本文編號：2095588