论文部分内容阅读
本文是作者从马氏体回火第一阶段中的等温分解曲线来研究分解过程。这种等温曲线最初接近时间的一次方的指数关系,越后则越不到一次方关系的分解时率。作者认为这种曲线反映了分解过程瞬变的本质和晶格间隙中碳原子运动迟留的特徵。假定了间隙碳原子从任一种运动情态转变到另一种情态都有一定的几率以后,等温分解曲线可以被表示成为一系列的时间的指数函数的和。每一指数项中时间的系数和运动情态转变的几率有关。这种几率和碳原子的浓度及时间无关,它们是温度的函数且和晶体间架的性质有关。指数项的系数则和碳原子在各种运动情态中的分布有关。这样的方式可以把实验数据代表到如所需要的精确度,而凭着所得的系数可以对推测分解过程的机构有所帮助。
This article is the author from the martensite tempering the first phase of the isothermal decomposition curve to study the decomposition process. This isotherm curve first approached the exponential relationship of the first power of time, and the later it is less than the decomposition rate of a square relationship. The authors consider this curve to reflect the nature of the transients in the decomposition process and the characteristics of delayed carbon atoms in the lattice space. Assuming that there is a certain chance that interstitial carbon atoms will change from either kinematic state to another state, the isothermal decomposition curve can be expressed as the sum of a series of exponential functions of time. The coefficient of time in each index term is related to the chance of change of modality. This probability is independent of the concentration and time of the carbon atoms and is a function of temperature and is related to the nature of the intergranular. The coefficient of the index term is related to the distribution of carbon atoms in various sports situations. This way, the experimental data can be represented as accurately as desired, and the resulting coefficients can be useful to the agency that speculates on the decomposition process.