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首页> 外文期刊>ISIJ international >Influence of Strain on Induced Precipitation Kinetics in Microalloyed Steels
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Influence of Strain on Induced Precipitation Kinetics in Microalloyed Steels

机译：应变对微合金钢诱导析出动力学的影响

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Using torsion tests and applying the back extrapolation method, the statically recrystallized fraction of low carbon microalloyed steels contain ing vanadium, niobium and titanium, respectively, has been determined for different temperatures and strains. From the recrystallized fraction against time curves it is possible to draw precipitation-time-temperature (PIT) diagrams. These diagrams show that the strain does not affect precipitation kinetics in an independent manner, but that this influence is related with the microalloy content. The greater the strain applied, the shorter the incubation time of induced precipitation, but this influence diminishes as the microalloy content increases. It is also demonstrated that the incubation time is practically independent of the nature of the metal microalloy (V, Ti, Nb). In this sense, new expressions are proposed to relate the incubation and precipitation end times with the strain and the microalloy content. A model is also established for precipitation kinetics at the curve nose temperature.
机译：使用扭转试验并应用反向外推法，已确定了不同温度和应变下分别含钒，铌和钛的低碳微合金钢的静态再结晶级分。从重结晶馏分相对于时间的曲线，可以绘制出沉淀-时间-温度（PIT）图。这些图表明，应变不以独立的方式影响析出动力学，但是这种影响与微合金含量有关。施加的应变越大，诱导沉淀的孵育时间越短，但是随着微合金含量的增加，这种影响会减小。还证明了保温时间实际上与金属微合金（V，Ti，Nb）的性质无关。从这个意义上讲，提出了新的表达方式来将孵育和沉淀的结束时间与菌株和微合金含量相关联。还建立了一个在弯头温度下的沉淀动力学模型。

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