【摘要】：用MMS-300熱力模擬機研究了變形量、保溫溫度及保溫時間對鈦鉬微合金鋼鐵素體基體上析出物尺寸的影響規(guī)律,獲得了鐵素體區(qū)析出動力學特征。結果表明,實驗鋼鐵素體基體中析出物主要為鈦鉬的碳氮化物,其中尺寸較大析出物為圓形、方形或長條形,隨機分布;尺寸細小析出物為圓形或橢圓形,其析出形態(tài)為排列整齊的相間析出及彌散析出,當保溫溫度較高時,其分布形式主要為相間析出;隨著變形量的增加及保溫時間的延長,析出物尺寸減少,隨著保溫溫度的升高,析出物尺寸先增加后減少,鐵素體區(qū)析出動力學曲線中600℃和700℃為最小尺寸析出溫度。
[Abstract]:The effects of deformation, holding temperature and holding time on the size of precipitates on the matrix of titanium-Mo microalloy iron and steel were studied by MMS-300 thermodynamic simulator, and the precipitation kinetics characteristics in the Ferrite region were obtained. The results show that the precipitates in the experimental iron and steel matrix are mainly titanium-Mo carbon and nitride, in which the larger precipitates are circular, square or strip-shaped, and are randomly distributed. The fine precipitates are round or oval, and their precipitation forms are neatly arranged interphase precipitation and dispersion precipitation. when the heat preservation temperature is high, the distribution form is mainly interphase precipitation. With the increase of deformation and holding time, the size of precipitates decreases. With the increase of temperature, the size of precipitates increases first and then decreases. The minimum size of precipitates is 600 鈩，

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